Predictive Values of Preoperative Compound Muscle Action Potential Amplitude for Surgical Outcomes in Idiopathic Ulnar Neuropathy at the Elbow.

ABSTRACT:

Introductions/aims

Despite numerous studies on ulnar neuropathy at the elbow (UNE), the predictive value of preoperative compound muscle action potential (CMAP) amplitude for postoperative intrinsic function remains unclear. This study aimed to evaluate the predictive values of preoperative CMAP amplitude for surgical outcomes in idiopathic UNE.

Methods

A retrospective study was conducted on patients who underwent ulnar nerve transposition for idiopathic UNE with at least 24 months of follow-up. The primary outcome was the Medical Research Council (MRC) muscle strength of the abductor digiti minimi (ADM), and poor ADM function was defined as an MRC grade ≤ 2 at the final follow-up or a grade lower than baseline. Secondary outcomes included the key pinch strength ratio, grip

SUBMITTER: Cho JY 

PROVIDER: S-EPMC12599592 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature