Interference screw failure in distal biceps endobutton repair: case report

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Biomedical Engineering

Background:

• Distal biceps rupture repair commonly uses Endobutton fixation with interference screws for secure fixation and early motion.
• This method aims to restore anatomical integrity and function following traumatic tendon avulsion.

Observation:

• A case of Endobutton fixation failure occurred due to a loose interference screw, leading to incompetent distal biceps attachment.
• This complication resulted in the need for revision surgery to restore stability.

Findings:

• Revision surgery involved an extensile approach, biceps mobilization, and repeat Endobutton fixation at a more distal site.
• The revised fixation provided secure repair and resulted in an excellent clinical outcome for the patient.

Implications:

• Understanding the specific mechanism of interference screw loosening is crucial for preventing Endobutton fixation failure in distal biceps repairs.
• This knowledge can help surgeons minimize complications and improve the success rate of this surgical technique.