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Corresponding Author

Mohamed Abdelaziz Abdelhalim

Document Type

Original Article

Abstract

Background: Significant grip, pinch weakness, and ulnar digit clawing are the consequences of ulnar nerve injury. Sensory and motor deficiencies also affect the hand. There are two categories of ulnar nerve injuries: low and high.

Aim and objectives: To evaluate motor and functional outcomes and clawing correction after AIN transfer to DMUN.

Patients and methods: From March 2020 to August 2023, researchers at the orthopedic departments of Al-Azhar University Hospitals and Assiut University Hospitals analyzed the results of two types of transfers for patients with high ulnar nerve injuries: end-to-end transfers (AIN) and structured end-to-side transfers (SETS). The participants included eighteen men and two females.

Results: The results of the interossei procedure were negative in 16 patients (80.0%), fair in 3 patients (15%), and outstanding in 1 patient (5%). When comparing the patients' interossei scores before and after surgery, no statistically significant difference was found (P= 0.793). Sixteen patients (80%) demonstrated a reasonable improvement in grip strength, three patients (15.0%) a significant improvement, and one patient (5%). Concerning Grip, there was no statistically significant change between the pre- and post-operative patient groups (P= 0.017).

Conclusion: The transfer of the anterior interosseous nerve (AIN) to the deep motor branch of the ulnar nerve (DMUN) was not successful in fully restoring nerve function to the intrinsic muscles that are normally supplied by the ulnar nerve.

Keywords

Neurotization; high ulnar nerve injury; outcomes

Subject Area

Orthopedics

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