Abstract
Tendon avulsion at the musculotendinous junction caused by digit avulsion amputation is still a challenging problem. We aimed to compare the tendon functional outcomes of two repair methods for tendon avulsion rupture at the musculotendinous junction in patients with complete thumb avulsion amputations. A retrospective study was performed to evaluate patients with complete thumb avulsion amputations whose tendons were repaired through reattachment to muscle (group I) or tendon transfer (group II) between July 2008 and October 2019. Outcomes of total range of motion, pinch strength, grip strength and reoperation rate were included. A total of 23 patients met the inclusion criteria, with a mean follow-up of 16.6 ± 4.2 months. Total active range of motion was comparable between groups I and II (P = 0.095). Pinch strength of group I was lower than group II (P = 0.001). The result of grip strength was found to be similar (P = 0.075). In addition, there was no significant difference in reoperation rate (P > 0.05). Tendon transfer can attain higher pinch strength for replantation of thumb avulsion amputations. It is recommended for patients with jobs that demand higher strength.
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