Cervical Spine Management in Patients with Rheumatoid Arthritis: Review of the Literature Carolee Moncur and H James Williams PHYS THER. 1988; 68:509-515. The online version of this article, along with updated information and services, can be found online at: http://ptjournal.apta.org/content/68/4/509 Collections This article, along with others on similar topics, appears in the following collection(s): Adaptive/Assistive Devices Rheumatoid Arthritis e-Letters To submit an e-Letter on this article, click here or click on "Submit a response" in the right-hand menu under "Responses" in the online version of this article. E-mail alerts Sign up here to receive free e-mail alerts Downloaded from http://ptjournal.apta.org/ by guest on September 9, 2014 Cervical Spine Management in Patients with Rheumatoid Arthritis Review of the Literature CAROLEE MONCUR and H. JAMES WILLIAMS Rheumatoid arthritis of the cervical spine is a well-recognized source of neck pain. Discussion of the potential effects of various treatment interventions on the tissues of patients with rheumatoid arthritis of the cervical spine, however, has been scarce in the physical therapy literature. Physical therapists should understand the implications of this type of inflammatory arthritis when treating patients with rheumatoid arthritis. The end-stage results of the inflammatory process and the mechanical forces on the cervical spine can cause atlantoaxial subluxation, atlantoaxial impaction, and subaxial subluxation. The purpose of this article is to review the literature on several aspects of rheumatoid arthritis of the cervical spine: 1) pathological anatomy, 2) clinical findings, 3) surgical management, 4) management with cervical orthoses, and 5) physical therapy management. Key Words: Arthritis, rheumatoid arthritis; Joint diseases. Cervical spine involvement in patients with rheumatoid arthritis (RA) is recognized as a significant source of neck pain, with its effects ranging from minor restriction of range of motion and pain to major neurological impairment and even death. The joints of the cervical spine, like other joints affected by RA, encounter synovitis; erosions; and weakening and destruction of bone, cartilage, and ligamentous structures.1 Cervical spine manifestations in patients with RA were first described by Garrod in 1890, who concluded from his father's clinical notebooks that 178 (28%) of 500 patients with RA had arthritis in the cervical joints.2 Still described cervical spine involvement in children with juvenile arthritis.3 The presence of subluxation, especially of the occipitoatlantoaxial complex, in inflammatory arthritides such as RA was described later.4,5 Various researchers have reported that up to 25% of patients with RA have subluxation at the atlantoaxial articulations, and about 50% of patients with RA have subaxial subluxation at two or more vertebral levels.6,7 Smith et al determined that 150 out of 962 inpatients with RA had cervical subluxation at one or more vertebral levels.8 These findings have several clinical implications for physical therapists who treat patients with RA: 1) asymptomatic patients may show radiographic evidence of cervical subluxation at some level, 2) patients with symptomatic complaints may not have cervical subluxation, 3) patients' complaints of pain in the cervical spine may occur in various patterns, 4) patients may have variable neurological symptoms, and 5) physical therapists should apply cervical spine therapeutic techniques cautiously because of the fragile nature of the tissues affected by RA. C. Moncur, PhD, is Associate Professor, Division of Physical Therapy, College of Health, University of Utah, 1140 Annex, Salt Lake City, UT 84112 (USA). H. Williams, MD, is Professor, Division of Rheumatology, Department of Internal Medicine, University of Utah. This article was submitted December 29, 1986; was with the authors for revision 19 weeks; and was accepted August 12, 1987. Potential Conflict of Interest: 4. We believe that a noticeable omission exists in the physical therapy literature describing current thinking and physical therapy management of the cervical spine in patients with RA. The purpose of this review is to describe the pathological anatomy, clinical findings, surgical and nonsurgical management, and physical therapy management of the cervical spine in patients with RA. PATHOLOGIC ANATOMY The normal cervical spine has 14 serially arranged apophyseal (true synovial) joints between the skull and the first thoracic vertebra. These joints, along with the odontoid-atlas joints, the 10 joints of Luschka, and five fibrocartilaginous intervertebral disks, comprise a total of 32 cervical joints that are held in place by ligaments, muscles, and capsular structures.9,10(pp271-275) Rheumatoid arthritis is an inflammatory arthritis that can result in ligamentous distention and rupture, synovitis, articular cartilage destruction, and pannus formation. The effects of RA on bone are osteoporosis, cyst formation, and erosion. Postmortem dissections of cervical vertebrae have revealed synovial and granulomatous rheumatoid lesions in the joints of Luschka, although no radiographic evidence of cervical RA was present.9 The end-stage results of the inflammatory process combined with the mechanical forces on the cervical spine can injure the neck structures and cause atlantoaxial subluxation, atlantoaxial impaction, and subaxial subluxation. Atlantoaxial subluxation and dislocation at the C4-5 and C5-6 levels are among the most common and serious complications of RA.11 Atlantooccipital dislocation has been described in the literature, but it is thought to be of a very low incidence and is best identified by computerized axial tomography.12 Atlantoaxial Subluxation Erosive disease in the atlantoaxial, atlantoodontoid, and atlantooccipital joints and in the synovium-lined bursa be- Volume 68 / Number 4, April 1988 Downloaded from http://ptjournal.apta.org/ by guest on September 9, 2014 509 tween the odontoid process and transverse ligaments provides foci for potential atlantoaxial subluxation (Fig. 1). Complete avulsion of the transverse ligaments, which maintain the correct anatomical alignment of the odontoid process against the anterior arch of the atlas, has been described and allows the odontoid process to slip posteriorly and encroach upon the spinal cord.11 Postmortem studies have shown that anterior subluxation exists in 11% to 46% of patients with atlantoaxial subluxation. Anterior subluxation is generally defined as a forward or anterior slippage of the atlas with respect to the axis that allows the odontoid process to move posteriorly toward the spinal cord. A distance of 2 to 3 mm between the posterior surface of the anterior arch of the atlas and the anterior surface of the odontoid process is considered within normal limits. When viewed on a lateral roentgenogram of the patient's neck during forward flexion, a gap greater than 3 mm between the odontoid process and the atlas is considered to be anterior subluxation.13-15 A subluxation of greater than 10 to 12 mm indicates a loss of integrity of the transverse, alar, and apical ligaments.16 Subluxations of all types have Fig. 1. Schematic depiction of the arthrology of the cervical spine (A) anterior view and (B) posterior view with the posterior elements of the vertebrae removed. (Adapted from Williams and Warwick.10(pp447-449)) 510 PHYSICAL Downloaded from http://ptjournal.apta.org/ by guest on September 9, 2014 THERAPY PRACTICE been noted in 43% to 86% of patients with RA, but cervical anterior subluxations have been reported in as few as 19% and as many as 71% of patients with RA.7,9,17 Anterior subluxation may be reduced by moving the patient's head into extension, may remain unreducible, or may be uncorrectable within the normal degree of 2 to 3 mm.6,7,18-2° Posterior subluxation, a backward dislocation of the atlas onto the axis,21-27 occurs infrequently in patients with RA and can cause spinal cord compression. Lateral subluxation of the atlantoaxial joints and an accompanying rotational deformity have been described in the literature and are difficult to assess radiographically.1 Lateral subluxation of the atlantoaxial joints accounts for 21% of all atlantoaxial subluxations26 and occurs when the atlas moves laterally with respect to the axis. The articular facets of the atlantoaxial joints may become eroded and unstable, precipitating lateral motion of the vertebra. Lateral subluxation can be detected on an anteroposterior view of a roentgenogram of the cervical region taken through the open mouth of the patient.23 Atlantoaxial Impaction Atlantoaxial impaction (ie, pseudobasilar invagination, cranial settling, or vertical subluxation) occurs when the skull settles downward onto the atlas and the atlas settles onto the axis. The impaction is caused by bony erosion and osteoporosis in the atlantooccipital and atlantoaxial joints. Atlantoaxial impaction occurs in 5% to 32% of patients with RA 1 7 , 1 9 , 2 8 and is measured commonly by establishing how far above McGregor's line (a line drawn from the hard palate to the occiput on a lateral view of a cervical spine roentgenogram) the odontoid process has migrated (Fig. 2).26 Atlantoaxial impaction is present when the odontoid process protrudes above McGregor's line 8 mm in men and 9.7 mm in women.26 Subaxial Subluxations Subaxial subluxations are found at multiple vertebral levels and tend to be severe, giving a "stepladder" appearance to the cervical spine on a roentgenogram.29-31 End-plate erosions may be found in 12% to 15% of patients with RA and subluxations in 10% to 20% of patients with RA.13,29,32 Narrowing and subluxation of C2-C3 or C3-C4 are characteristic of patients with RA, although diskovertebral destruction does not always accompany vertebral subluxation. The lack of osteophyte formation is typical of RA. Subluxation may result from disk destruction caused by synovitis with erosion of the adjacent bone and disk13 or may be secondary to facet arthritis and ligamentous laxity leading to chronic disk trauma with destructive changes.18 The end result of encroachment on the spinal cord may be pachymeningitis, arachnoiditis, and medullary compression.31 CLINICAL FINDINGS Physical therapists who treat patients with RA should realize that the patient may be entirely asymptomatic in the cervical spine but have radiographic evidence of cervical subluxation at some vertebral level. The patient, however, may have gnawing cervical neck pain related to a flare-up of RA without subluxation of the joints.8 Confirmation of joint and vertebral subluxation can only be made radiographically or with tomography. Attention to and careful recording of the patient's complaints and periodic methodical reevaluation Fig. 2. Lateral view of the head and neck with McGregor's line drawn from the hard palate to the occiput to measure atlantoaxial impaction. (Adapted from Anderson JE: The head. In Anderson JE (ed): Grant's Atlas of Anatomy, ed 8. Baltimore, MD, Williams & Wilkins, 1983, p 7-1.) of the patient's cervical spine will alert the therapist to contact the patient's physician when concerns arise. Various complaints regarding patterns of pain in the neck have been reported in the literature. Generalized pain may occur in the neck and occipital area,31 or the pain may radiate from the occiput to behind the ears with aching and radiation into the shoulders caused by head motion.8,17,33 Some patients with RA may experience pain in the neck, occipital region, or posterior scalp, or complain of headaches or a band-like constriction of pain about the forehead. Pain may be aggravated by forward flexion of the head.34 Stiffness and crepitus, or a "clunking" sound, may be apparent to the patient and the clinician as the patient moves his head, particularly during rotation, which may be limited.33,34 As the patient moves his head into forward flexion, a gibbous deformity of C2 may appear as the spinous process protrudes posteriorly (Fig. 3).34 Radiating pain, numbness, and tingling in the upper extremities and neck will be aggravated in some patients by forward flexion of the head. Some patients prefer not to hyperextend their neck because that will create symptoms. Patients often complain that their head feels too heavy to hold up and that their neck muscles are weak.34 Neurological symptoms are also variable and are related to the duration of RA. Specific neurological symptoms are flexor spasms of the legs, absent abdominal reflexes, decreased position sense (not entirely attributable to the loss of the mechanoreceptors of the joint), increased plantar flexor signs, and other pyramidal tract signs. These neurological symptoms usually appear in the later stages of RA. 3 1 , 3 4 , 3 5 Sensory phe- Volume 68 / Number 4, April 1988 Downloaded from http://ptjournal.apta.org/ by guest on September 9, 2014 511 Fig. 3. Gibbous deformity of C2 (arrow) caused by subluxation of the atlas on the axis in a patient with cervical rheumatoid arthritis. nomena associated with RA may be numbness, paresthesia, loss of sensation to hot and cold, transient hemianesthesia,33 or radicular symptoms in the upper extremities. Brown-Séquard syndrome may occur with atlantoaxial subluxation.35 Vertebrobasilar insufficiency may contribute to blackouts, drop attacks, loss of equilibrium, tinnitus, vertigo, visual disturbances, and diplopia.8,31,33-34 Bulbar disturbances may appear during swallowing, phonation, and respiration. Bladder sphincter control may be lost, resulting in urinary retention or incontinence. Death may result from spinal cord or medullary compression in patients with cervical RA, but such compression does not appear to be the only cause of premature death in these patients. Risk factors that appear to predispose patients with cervical RA to spinal cord compression include being a male patient, having an anterior atlantoaxial subluxation of greater than 9 mm, and the presence of atlantoaxial impaction.26 SURGICAL MANAGEMENT Subluxation of the atlantoaxial spine does not necessarily indicate surgical intervention. Serious surgical consideration should be given when the patient experiences intractable pain, radicular pain, vertebrobasilar symptoms, or neurological deterioration. Severe subaxial subluxation or atlantoaxial impaction with impending neurological deficit, with or without pain, may also be an indication for surgical stabilization.17,36 The greatest determinant of the need for surgical intervention is the patient's general condition. Patients who need cervical stabilization often have crippling, debilitating disease. Their airways are difficult to intubate because of neck instability. If the patients are longstanding steroid users, they may have fragile, easily damaged skin; osteoporotic bone, susceptibility to infections; and wounds that heal poorly. The results of atlantoaxial surgical fusions have generally been disappointing. Posterior cervical fusions with or without decompression have usually been unsatisfactory and accompanied by a high mortality rate.37,38 Patients undergo a period of preoperative skeletal traction to reduce subluxations and myelopathic changes.36-39 Some researchers suggest that the fusion should extend distally to the site of pathological subluxations in both atlantoaxial and subaxial joint subluxations.36-39 Methyl methacrylate has been used successfully as an internal splint during arthrodesis of the cervical spine in patients with RA.40,41 This treatment eliminates the encumbrance of external fixation devices such as the halo cast. The chief advantage of an internal splint is reduction of the skin complications that occur in surgery in the patient with chronic RA. A composite of methyl methacrylate and metal wires is advantageous when the occiput and inferior segments of the cervical spine are arthrodesed, a pseudoarthrosis is repaired, or multilevel fusion in osteoporotic bone is required.40 Transoral excision of the odontoid peg and soft tissues pannus has been performed recently using computerized tomography to better define the abnormalities at the craniocervical junction in RA.12 A posterior occipitocervical fusion is done in conjunction with the transoral excision, and the entire operation is accomplished in one stage. The surgery does not require preoperative skeletal traction to reduce the subluxation. Reported results of the combined surgical procedure are encouraging, although follow-up of the 13 patients has been short.42,43 MANAGEMENT WITH CERVICAL COLLARS Cervical collars are commonly used to protect the necks of patients with RA. In a prospective study of the progression of RA in the cervical spine in 106 patients, researchers determined that diligent use of a supportive collar did not alter the natural progression of RA. All of the patients in the study who progressed to the severe neurological and radiographic stages of RA did so while wearing a firm cervical collar.8,17 Cervical collar wearing was unacceptable to most patients, although they complained of neck pain. Cervical collars do not prevent RA progression, but they are often prescribed with the rationale that a collar prevents sudden neck flexion and extension that could result in neurological impairment or death. Johnson et al studied the effectiveness of various cervical orthoses (a soft cervical collar, Philadelphia collar, four-poster brace, cervicothoracic brace, Somi brace, and halo device with a plastic body vest) in limiting neck and head motion in healthy subjects.44 Fortyfour subjects (20-36 years of age) with normal cervical spines participated in the study. Normal and unrestricted active ROM inflexion,extension, lateral bending, and rotation were measured roentgenographically and photographically and compared to active ROM measured under the same conditions while wearing the cervical orthoses. Subjects wearing the halo device with the plastic body vest were assessed for flexion and extension between the occiput and first thoracic vertebrae. The halo device with the plastic body vest allowed only 4% of normalflexion-extensionof the whole cervical spine. The cervicothoracic brace was the most effective of the conventional orthoses, allowing 13% of normal flexion-extension. This brace was followed in order of decreasing effectiveness by the four-poster brace (21%), the Somi brace (28%), the Philadelphia collar (29%), and the soft cervical collar (74%). The halo device with the plastic body vest was most effective at controllingflexion-extensionof the upper intervertebral joints (3.4° ± 0.8° of ROM at the atlan- 512 PHYSICAL THERAPY Downloaded from http://ptjournal.apta.org/ by guest on September 9, 2014 PRACTICE toaxial joint; 2.4° ± 0.8° between C2 and C3). The cervicothoracic brace was most effective at the middle and lower vertebral levels and better at controlling motion than the other orthoses. Rotation was poorly controlled by any conventional orthoses. The cervicothoracic brace, the most effective of the conventional orthoses, allowed 18% of normal rotation. The halo device, however, allowed 1 % of normal rotation and best controlled lateral bending (4% of normal motion). All of the conventional orthoses were ineffective in controlling lateral motion when compared with the other motions. The researchers concluded that increasing the rigidity and length of the cervical orthosis improved its ability to restrict motion in healthy subjects.44 Althoff and Goldie investigated four commonly used cervical collars for management of atlantoaxial subluxation.45 Eleven patients with atlantoaxial subluxation participated in the study and served as their own control. Each patient had the following four collars tested on them: 1) soft cervical collar, 2) Philadelphia collar, 3) Somi brace, and 4) fourposter collar. Lateral radiographs were taken with the patient in flexion and extension before and after the application of the various cervical collars. Angular measurements were calculated between flexion and extension ROMs. The distance between the anterior arch of the atlas and anterior surface of the odontoid process was also measured. Althoff and Goldie concluded that the different cervical collars were unsatisfactory stabilizers of cervical motion (47%-81% of unrestricted motion was allowed).45 None of the cervical collars stabilized atlantoaxial instability. Firm collars with an occipital seat tended to force the atlas to subluxate anteriorly when the head was extended. PHYSICAL THERAPY MANAGEMENT Physical therapy is an important component of the total management of patients with RA.46 Treatment is directed toward 1) relieving pain and discomfort, 2) maintaining or restoring ROM and muscle strength, and 3) helping patients adapt activities of daily living that aggravate neck pain. Relief of Pain and Discomfort Before evaluating and treating the neck of the patient with RA, the physical therapist should realize that cervical spine RA is a potentially life-threatening condition. The main hazard of cervical spine subluxation is damage to the cervical cord or vertebral artery. Death caused by spinal cord or brain stem involvement may be misdiagnosed as a myocardial infarction or cerebral accident. Spinal cord damage may be responsible for more deaths in patients with RA than is currently recognized.8 Physical therapists should make decisions about methods of pain relief for patients with RA with knowledge of the potential hazards. A wide variety of physical modalities have been advocated for use in rheumatic diseases to decrease pain, relax musculature, and increase joint mobility. Any discussion of the use of therapeutic modalities for arthritis management must not discount the potential influence of the placebo phenomenon. Because little is known about some of the actions of these modalities in RA, the potential exists for unproven practices to be perpetrated on patients. The efficacy of therapeutic modalities on pain relief or on improvement of a functional task must be determined with full awareness of the placebo effect.47 Heat therapy has been widely advocated for patients with RA. Superficial heat is used for pain relief, for relaxation, and as a warming activity before muscle exercise. Although superficial heat is commonly used as a form of pain relief, few controlled studies have described the actual changes in tissue temperature and the comfort achieved through heat therapy.48-50 The anecdotal reporting of patients who have received even short-term pain relief from superficial heat should not be discounted. Deep-heating treatments (ie, microwave therapy, diathermy, or ultrasound) are generally contraindicated for direct use on inflamed, painful joints.50"53 Evaluation of the effectiveness of ice in the treatment of RA is difficult, and few controlled cryotherapy studies have been completed. Current thinking about the use of cryotherapy is based on early reports in the literature and anecdotal histories.54 Patients' responses to the application of ice will determine its continued use. The cold pack can be placed like a collar around the patient's neck but should be removed if the patient experiences excessive pain. The patient should be observed closely for any adverse reactions to cryotherapy. Physical therapists who fit patients with a soft foam collar to protect their spine may believe that the soft, or light, plastic collar provides relative stability, prevents excessive anterior head flexion, relieves pain, and encourages ankylosis of the unstable elements.9,17 Research does not show, however, that soft collars give complete stability or encourage ankylosis of the cervical spine in RA. The most that can be said about the use of a soft cervical collar is that it may relieve pain during day and night activities. Additionally, a soft collar has great psychological value and gives patients a sense of stability and protection and a sensation of neck warmth. Intermittent cervical traction is not recommended because of the potential of further damage to the integrity of the cervical joints. Mobilization and manipulation techniques are absolutely contraindicated.55,56 Physical therapists take considerable risks when attempting physical movement maneuvers of patients with cervical spine RA. Roentgenographs may identify stable joints but will not give the entire status of the transverse and alar ligaments and the facet joint soft tissues. We believe that gentle stretching, ROM, and isometric exercises of the head and neck taught to the patient are preferable. Transcutaneous electrical nerve stimulation has become a popular modality for pain relief in RA. Mannheimer and Carlsson determined that high-intensity TENS reduced joint pain in 18 of 19 patients with RA.57 No reported studies have examined the use of TENS on the cervical spine in RA, but TENS has been shown to be an effective pain relief treatment for other types of arthritides (low back disorders,58 osteoarthritis of the knee,59 Sudeck's atrophy, and reflex sympathetic dystrophy60). The advantage of TENS is that patients can use it at home after appropriate instruction by a physical therapist. Maintaining or Restoring Range of Motion and Muscular Strength A frequent complaint of patients with cervical RA is the feeling that their head is too heavy for their neck muscles to hold up. Patients must be taught to accomplish gentle ROM exercises of the head and neck and may need to be told to avoid excessive hyperextension or any circumduction motions of the head. Rather than do active hyperextension, the patients can perform isometric extension against a pillow on their bed; Volume 68 / Number 4, April 1988 Downloaded from http://ptjournal.apta.org/ by guest on September 9, 2014 513 against a wall; or in a high-backed, overstuffed chair. If patients' hands are severely deformed, isometric contractions of the neck against the hand may be impossible, and they may use a beach ball placed between themselves and the wall while sitting in a chair to perform isometric neck exercises. Physical therapists should realize that cervical exercises may aggravate rather than decrease RA pain. Patients with RA should be reevaluated routinely to determine the extent of neck aggravation caused by the exercise program. Therapists should take precautionary measures when physically handling patients with RA. Not only must therapists be judicious when the patient is unable to transfer, they must also fulfill their role as an educator of the patient, family, and staff about how patients should be transferred. Physical therapists should instruct patients not to use their head or neck as a pivotal point when transferring from a bed, chair, or automobile. Traumatic medullary compression can cause severe neurologic damage or even death. Nursing staff, orderlies, and the patient's family members should learn appropriate transfer methods that protect the patient's head and neck. When assisting the patient out of bed, for example, the care giver should not lift the patient from the back of the head, but should roll the patient onto one side and bring him to a sitting position by grasping him around the trunk under the arms. We do not intend to create anxiety in physical therapists who are unfamiliar with RA and its manifestation in the cervical spine. Physical therapists are unlikely to aggravate the cervical spine seriously in patients with RA if they follow proper handling techniques and precautions. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. CONCLUSIONS 30. Rheumatoid arthritis of the cervical spine may cause atlantoaxial subluxation, atlantoaxial impaction, or subaxial subluxations. Some patients with RA, however, may experience only neck pain resulting from the inflammatory process of RA. Death may result from spinal cord or medullary compression. Physical therapists who treat patients with RA should use wisdom and caution when designing and implementing a treatment plan. Communication is imperative between all members of the health care team, including patients and their families. 31. 32. 33. 34. 35. 36. 37. REFERENCES 38. 1. Burry BC, Tweed JM, Robinson RG, et al: Lateral subluxation of the atlanto-axial joint in rheumatoid arthritis. Ann Rheum Dis 37:525-528, 1978 2. Garrod AB: A Treatise on Rheumatism and Rheumatoid Arthritis (1890), referred to in Bland JH: Rheumatoid arthritis of the cervical spine. J Rheumatol 1:319-342,1974 3. Still FG: On a Form of Chronic Joint Diseases in Children (1897), referred to in Rodnan GP, Schumacher HR: Primer on Rheumatic Disease. Atlanta, GA, Arthritis Foundation, 1983, p 103 4. Ely LW: Subluxation of the atlas: Report of two cases. Ann Surg 54(1):2029,1911 5. Englander O: Non-traumatic occipitoatlanto-axial dislocation: A contribution to the radiology of the atlas. Br J Radiol 15:341-345,1942 6. Sharp J, Purser DW: Spontaneous atlanto-axial dislocation in ankylosing spondylitis and rheumatoid arthritis. Ann Rheum Dis 20:47-77,1961 7. Conlon PW, Isdale IC, Rose BS: Rheumatoid arthritis of the cervical spine: An analysis of 333 cases. Ann Rheum Dis 25:120-126,1966 8. Smith PH, Benn RT, Sharp J: Natural history of rheumatoid cervical luxations. Ann Rheum Dis 31:431-439,1972 9. 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Can Med Assoc J 94:470-477,1966 Christophidis N, Huskisson EC: Misleading symptoms and signs of cervical spine subluxation in rheumatoid arthritis. Br Med J [Prac Obs] 285:364365,1982 Ranawat CS, O'Leary P, Pellicci P, et al: Cervical spine fusion in rheumatoid arthritis. J Bone Joint Surg [Am] 61:1003-1010,1979 Conaty JP, Mongan ES: Cervical fusion in rheumatoid arthritis. J Bone Joint Surg [Am] 63:1218-1227,1981 Ferlic DC, Clayton ML, Leidholt JD, et al: Surgical treatment of the symptomatic unstable cervical spine in rheumatoid arthritis. J Bone Joint Surg [Am] 57:349-354, 1975 Meijers KAE, van Beusekom GT, Luyendijk W, et al: Dislocation of the cervical spine with cord compression in rheumatoid arthritis. J Bone Joint Surg [Br] 56:668-680,1974 Bryan WJ, Inglis AE, Sculco TP, et al: Methyl methacrylate stabilization for enhancement of posterior cervical arthrodesis in rheumatoid arthritis. 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Philadelphia, PA, W B Saunders Co, 1978, chap 7 514 PHYSICAL THERAPY Downloaded from http://ptjournal.apta.org/ by guest on September 9, 2014 PRACTICE 48. Harris ED, McCroskery PA: The influence of temperature and fibril stability on degradation of cartilage collagen by rheumatoid synovial collagenase. N Engl J Med 260:1-6, 1974 49. Fiebal A, Fast A: Deep heating of joints: A consideration. Arch Phys Med Rehabil 57:513-514,1976 50. Mainardi CL, Walter JM, Speigal PK, et al: Rheumatoid arthritis: Failure of daily heat therapy to affect its progression. Arch Phys Med Rehabil 60:390393,1979 51. Hollander JL, Horvath SM: The influence of physical therapy procedures on intra-articular temperature of normal and arthritic subjects. JAMA 218:543-548,1949 52. Harris ED, Millard JG: Clearance of radioactive sodium from the knee. Clin Sci 15:9-15, 1956 53. Bonney GLW, Hughes RA, Janus O: Blood flow through the normal human knee segment. Clin Sci 11:167-181,1951 54. 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Bodenheim R, Bennett JH: Reversal of a Sudeck's atrophy by the adjunctive use of transcutaneous electrical nerve stimulation: A case report. Phys Ther 63:1287-1288,1983 Volume 68 / Number 4, April 1988 Downloaded from http://ptjournal.apta.org/ by guest on September 9, 2014 515 Cervical Spine Management in Patients with Rheumatoid Arthritis: Review of the Literature Carolee Moncur and H James Williams PHYS THER. 1988; 68:509-515. This article has been cited by 2 HighWire-hosted articles: Cited by http://ptjournal.apta.org/content/68/4/509#otherarticles http://ptjournal.apta.org/subscriptions/ Subscription Information Permissions and Reprints http://ptjournal.apta.org/site/misc/terms.xhtml Information for Authors http://ptjournal.apta.org/site/misc/ifora.xhtml Downloaded from http://ptjournal.apta.org/ by guest on September 9, 2014
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