Article

OBJECTIVE: To compare the outcomes of ultrasound-guided vs direct approach
corticosteroid injection in patients with idiopathic carpal tunnel syndrome.
METHODS: A double-blind randomized controlled study. Wrists affected by carpal
tunnel syndrome were randomized to the ultrasound-guided (n = 22 wrists) or
direct approach injection group (n = 17 wrists) before receiving 1 ml Betamethasone. Outcome measures were physical findings and electrodiagnostic
parameters assessed at 1, 3
and 6 months after injection. Complications were also
recorded. RESULTS: Both groups showed improvement through-out the follow-up
period after injections, in physical findings and in most electrodiagnostic
parameters (all p<0.05). The ultrasound-guided injection group showed greater
improvements in the Semmes-Weinstein Monofilament test result (p = 0.004),
sensory nerve conduction velocity (p = 0.038), and digit-4 comparison study
result (p = 0.046). Three wrists with weakness were found in the direct approach
injection group, yet none were noted in the ultrasound-guided injection group
(p=0.040). CONCLUSION: Both ultrasound-guided and direct approach corticosteroid
injection protocols improved clinical symptoms and signs, physical function, and
most electrodiagnostic parameters of patients with carpal tunnel syndrome
throughout the follow-up period. However, the ultrasound-guided injection group
showed greater improvements in the Semmes-Weinstein Monofilament test, sensory
nerve conduction velocity, and digit-4 comparison study.

Langue : ANGLAIS