Background: The repair of retracted flexor tendons is a challenging problem for hand surgeons. The tendon stump should be handled in an atraumatic manner because any microtrauma to the sheath and tendon can lead to poor functional outcomes.
Methods: Twenty-three patients with flexor zone 2 injuries and intraoperative finding of retracted tendons were randomly divided into two groups: endoscopic retrieval group and proximal incision group. A flexible endoscope and a flexible grasping forceps were used for endoscopic retrieval of the retracted flexor tendons. The groups were compared in terms of infection rate, neurovascular complications, regional pain, total range of active motion (TAM) and functional outcomes.
Results: Age, gender, average preoperative pain and general pain perception scores were similar between the two groups. We found a significantly shorter duration of operation and better pain scores at 1-2 weeks in the endoscopic group than in the other group (p = 0.002 and p = 0.020, respectively). A significant difference in TAM was demonstrated between the groups at 3 to 5 weeks (p = 0.003).
Conclusion: The surgical procedure presented here has the advantages of direct visibility of the proximal tendon end and retrieval in an atraumatic manner, with better results and decreased morbidity. It is a promising approach and can be used as a routine procedure in retracted tendon cases.
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