Tendon Transfer for Correction of Pinch in Chronic Ulnar Nerve Injury

The study is a prospective, single-center interventional trial including adult patients diagnosed with chronic ulnar nerve injury affecting pinch function. Eligible participants will undergo combined ECRB (Extensor Carpi Radialis Brevis) tendon transfer to adductor pollicis tendon and APL (Abductor Pollicis Longus) tendon transfer to 1st dorsal interosseous tendon that performed by experienced surgeons. Preoperative evaluation includes baseline hand function, pinch strength, and disability assessment. Postoperative follow-up will occur at 4, 6, 12, and 24 weeks to measure functional improvement using standardized hand assessment tools. Adverse events will be monitored and recorded. Inclusion criteria: adults ≥18 years, chronic ulnar nerve injury >6 months, and consent to participate. Exclusion criteria: prior tendon transfer, coexisting neuromuscular disorder, or inability to provide consent. Data will be anonymized to maintain confidentiality, and all ethical approvals will be in place.

Inclusion criteria

• Patients with chronic ulnar nerve injury (more than 1 year duration).
• Age between 18 and 60 years.
• Patients with stable joints and good passive range of motion of the hand and fingers.
• Absence of active infection or severe contracture.

Exclusion criteria

• • Patients with combined median or radial nerve injury.

• Patients with severe soft-tissue loss or fixed deformities precluding tendon transfer.
• Uncooperative patients or those with systemic diseases affecting muscle power or healing (e.g., diabetes mellitus, peripheral vascular disease).