Osteoarthritis of the scapho-trapezial joint.
In a cohort of 199 patients with OA we studied the prevalence of radiographic scapho-trapezial joint osteoarthritis (STJ OA) and its clinical features. The prevalence of STJ OA was 38%. Lone STJ OA occurs but is uncommon (11%). In contrast, STJ OA in combination with first carpo-metacarpal joint OA was found in 27%. There appears to be an age-related progression from those without disease to lone disease to combined disease. The most frequent radiological features seen were joint space narrowing, subchondral sclerosis and osteophytes. There was a weak correlation between STJ OA and palpable swelling at the thumb base (phi = 0.231, P = 0.01) but no association was found between STJ OA and tenderness at the thumb base.
Lim
K
K
Rheumatology Unit, University of Bristol, Bristol Royal Infirmary.
Dieppe
P
P
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D005260:Female; D005384:Finger Joint / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology; D011859:Radiography; D013933:Thumb