Thumb rotation patterns during pinch in patients with trapeziometacarpal osteoarthritis.

ABSTRACT:

Introduction

Trapeziometacarpal joint stability during pinch depends on the balance between the opponens pollicis and the first dorsal interosseous muscles, which control pronation and supination of the first metacarpal, respectively. Disruption of this muscular balance may contribute to joint instability in patients with trapeziometacarpal osteoarthritis, although the mechanisms underlying movement pattern changes in these patients remain unclear. This study aimed to quantitatively compare thumb rotation patterns during tip pinch between patients with trapeziometacarpal osteoarthtits and healthy individuals.

Methods

The thumb rotation angle during tip pinch was measured in 36 hands of 27 patients with trapeziometacarpal osteoarthritis and 19 hands of 11 healthy controls usi

SUBMITTER: Tsukamoto K 

PROVIDER: S-EPMC12946221 | biostudies-literature | 2026 Mar

REPOSITORIES: biostudies-literature