A Comparative Study of two Different Bone Anchors Used in the Management of Scapholunate Instability

Abstract

Aim: The aim of this study is to determine if there are differences related to the recurrence of instability, disability, pain, and psychosocial impact of pain in patients who have undergone surgery for scapholunate instability with either the Stryker Sonic Anchor or Depuy Mitek Anchor. When using the standard treatment of ligamentous repair and capsulodesis to repair scapholunate instability, the use of bone anchors is common practice, but there are no reports in the literature comparing clinical outcomes of different types of anchors used with this procedure.

Materials and Methods: A total of 36 patients with a diagnosis of scapholunate instability underwent scapholunate ligament repair and dorsal capsulodesis. One group was treated with the Sonic Stryker anchor (16 patients) and the other with Depuy Mitek anchor (20 patients). Both groups were followed post-operatively for an average of 12 months.

Results: In both groups, there was no recurrence of instability during the observation period. There were significant clinical and statistical differences between the preoperative and postoperative assessments for both anchors, and both groups were improved. However, between anchor types there were no significant statistical or clinical differences postoperatively related to the recurrence of instability, disability, pain, and psychosocial impact of pain in patients who have undergone surgery for scapholunate instability with either the Stryker Sonic Anchor or Depuy Mitek Anchor.

Conclusion: Our findings suggest that the patient outcomes are equivalent using either the Stryker Sonic Anchor or Depuy Mitek Anchor in patients undergoing surgery for scapholunate instability.