Sagittal band reconstruction in the index finger using a modified Elson technique

The Elson technique is a rigid reconstruction method for a hypoplastic or absent sagittal band in the treatment of chronic extensor digitorum communis (EDC) tendon dislocation. We performed a modified procedure based on the Elson technique for reconstruction of the radial sagittal band in case involving the index finger. We investigated the postoperative outcomes of chronic EDC dislocation after treatment with the original and modified Elson technique.

We examined five fingers of five patients (2 males and 3 females) with a mean age of 41 years. The chronic EDC tendon dislocation was due to an old trauma, or a spontaneous or congenital condition involving the index in two, middle in two, and ring finger in one patient. Sagittal band reconstruction was performed using the modified Elson technique for the index finger and the original technique for the other fingers. The mean duration of postoperative follow-up was 58 months. Clinical findings such as pain and discomfort at metacarpophalangeal flexion associated with the tendon dislocation, range of motion (ROM), and disabilities of the arm, shoulder and hand were evaluated. We also examined postoperative recurrence and subjective patient evaluation.

All cases achieved pain-free stability of the EDC tendon with no recurrence, and full ROM was maintained at the latest examination after surgery. The postoperative subjective evaluation by the patients was "very satisfied" in four fingers and "neutral" in one finger.

We demonstrated our modified Elson technique for the treatment of chronic extensor tendon dislocation of the index finger.