[Revision of distal biceps tendon rupture secondary to malpositioning. Case report].

INTRODUCTION

distal biceps tendon rupture is an uncommon injury, with an incidence of two to three cases per 100,000 people annually. It predominantly affects men between the ages of 40 and 60, commonly in the dominant arm and during eccentric contractions. Surgical treatment is preferred as it allows better restoration of supination and flexion strength. Proper anatomical positioning has been shown to optimize forearm supination strength.

CLINICAL CASE: a 45-year-old male developed an injury to the posterior interosseous nerve secondary to improper positioning of the distal biceps tendon during reinsertion. A revision surgery was performed.

CONCLUSION

this case provides clinical evidence of a specific complication rarely described: posterior interosseous nerve entrapment due to incorrect tendon reinsertion. The value of proper anatomical positioning to avoid neurological sequelae is emphasized, as well as the importance of timely surgical reintervention to restore function.