Late Results of Early End-to-End Repair in Sciatic Nerve Injuries.

Objective: Mechanisms of sciatic nerve injury include gunshot injury, sharps injury, injection injury, contusion, femoral fracture injury, and iatrogenic injury due to fracture surgery. Regardless of the type of injury, patients undergoing sciatic nerve repair have poor motor and sensory outcomes. In this study, we compared the late outcomes of a group of patients in whom the author performed an early end-to-end anastomosis for sciatic nerve sharps injury and another group of patients with a similar injury who were not operated on but left to natural history.

Methods: The sciatic nerve, comprising two primary divisions with distinct muscle innervations, was subject to separate examinations. Group 1 (n=10, study group) underwent tibial division anastomosis, while Group 2 (n=12, control group) received no surgical intervention involving the tibial division. Similarly, Group 3 (n=11, study group) underwent peroneal division anastomosis, while Group 4 (n=14, control group) encompassed subgroups that did not undergo peroneal division surgery.

Results: In Group 1, the rate of gain in plantar flexion muscle strength was significantly higher (p < 0.05) compared to Group 2. Furthermore, the sensory examination gain level ratio within the tibial domain was significantly greater (p < 0.05) in Group 1 than in Group 2. Additionally, Group 1 exhibited a significantly higher rate (p < 0.05) of detection of regeneration and reinnervation findings in electromyography (EMG) compared to Group 2.

Conclusion: When evaluating the long-term outcomes following early end-to-end anastomoses of the sciatic nerve, it becomes evident that while significant improvements are observed when compared to individuals without anastomosis, the positive impact of surgical interventions on motor and sensory gains in daily life remains limited. Nevertheless, we contend that early surgical intervention holds potential advantages in terms of patient management.