Article

Thumb carpometacarpal (CMC)
osteoarthritis is a frequent cause of thumb pain. PURPOSE : To evaluate the interrater reliability and the criterion validity of the grind test
for thumb CMC osteoarthritis. METHODS: Radiological evaluation was used as the
gold standard. Seventy thumbs of 54 persons with various hand disorders were
included in the study.
The grind test was performed by two physical therapists,
and radiographs were evaluated by a certified hand surgeon, all blinded to the
participants' diagnosis and other test results. Interrater reliability was
compared with a kappa statistic, and the sensitivity, specificity, likelihood
ratios, and predictive values were calculated from a 232 table. RESULTS: A kappa
value of 0.48 was calculated as the interrater reliability. The sensitivity of
the grind test was 42% and 53%, depending on tester. The specificity of the grind
test was 80% and 93%, depending on tester. The positive likelihood ratio was 2.65
and 6.00, and the negative likelihood ratio was 0.59 and 0.62. The positive
predictive value was 91% and 96%, depending on tester. The negative predictive
value was 68% and 70%, depending on tester. CONCLUSION: The grind test has
moderate reliability and accurately confirms the diagnosis of CMC osteoarthritis
and identifies those who do not have CMC osteoarthritis. However, a negative
grind test does not necessarily reflect negative radiographic evidence of thumb
CMC osteoarthritis.
LEVEL OF EVIDENCE: n/a.
CI - Copyright (c) 2010 Hanley & Belfus. Published by Elsevier Inc. All rights
reserved.

Langue : ANGLAIS