Endobutton versus transosseous suture repair of distal biceps rupture using the two-incision technique: a comparison series.

BACKGROUND: The purpose of this study was to report the outcome of a large cohort of patients undergoing distal biceps tendon repair. We compared the endobutton and transosseous suture repair techniques, both performed through a 2-incision approach.

METHOD: At an average of 2.1 years after a distal biceps repair, 46 male patients (19 endobutton and 27 transosseous suture) were reviewed. The mean age of our patients was 50 years.

RESULTS: Forty-three patients (93%) were satisfied with the results of their distal biceps tendon repair. The average pain score was 1.3 of 10 at a mean 2.1 years after repair. More than 80% of patients had regained their premorbid function in both recreational and occupational activities. The mean Mayo Elbow Performance Score was 93 of 100. Biodex strength testing demonstrated restoration of 92% of low-velocity supination power, 102% of high-velocity supination power, and 104% endurance compared with the contralateral limb. There was no statistically significant difference in postoperative strength between the transosseous suture and endobutton groups. There were 3 complications in this series, 1 case of heterotopic ossification and 2 cases of injury to the lateral cutaneous nerve of the forearm.

CONCLUSION: In this large cohort of 2-incision distal biceps repairs, we found a high degree of patient satisfaction and a low complication rate. We did not find any difference in clinical outcome with regard to subjective patient rating, pain, range of motion, or supination strength when comparing the 2-incision endobutton and transosseous suture fixation techniques.