Article

There are no reports of atraumatic hip subluxation and dislocation in the adult
patient with rheumatoid arthritis (RA). This rare phenomenon is most prevalent in
patients with congenital hip dislocation, von Recklinghausen disease, tumor
infiltration, connective tissue disorders, and juvenile rheumatoid arthritis. We
report an acute atraumatic dislocation of the hip in an adult patient with RA. We
believe that two factors contributed to the patient's atraumatic dislocation :
a shallow but appropriately positioned acetabulum and erosive RA with substantiate
panus formation. Similar to previous reports, there was a rent or capsular defect
that may have contributed to the mechanism of dislocation. Physicians should be
aware that, although rare, a de novo atraumatic hip dislocation is a possibility
in a patient with a long-standing history of RA and hip pain. Distinguishing
features of this case include the acuteness of the dislocation, the absence of previous symptoms, and adult-onset RA.

Langue : ANGLAIS