[Minimally invasive proximal hamstring insertion repair].

OBJECTIVE: Minimally invasive endoscopic reconstruction of avulsion injuries of the proximal hamstring insertion to prevent persistent weakness and pain. INDICATIONS: Fresh retracted 2‑ and 3‑tendon avulsion injuries of the proximal hamstring insertion. Unsuccessful conservative therapy of less retracted injuries. Painful chronic partial lesions of the proximal hamstring insertion. CONTRAINDICATIONS: Major comorbidities with an increased surgical risk, older patients with low functional demands. Chronic injuries without functional deficits. SURGICAL TECHNIQUE: Endoscopic refixation using suture anchors after freshening the footprint on the tuber ischiadicum. Visualization of the sciatic nerve to ensure its protection. POSTOPERATIVE MANAGEMENT: Partial loading with a knee brace for strict prevention of combined knee extension and hip flexion for 4-6 weeks. Start of active exercise and stretching 8 weeks postoperatively.
RESULTS: From 2014-2016, 12 patients were treated with an endoscopic reconstruction of the proximal hamstring insertion. After a mean follow-up of 25 months (range 16-34 months), an average visual analog scale (VAS) of 0 (range 0-2) and an average subjective assessment of function (Subjective Hip Value) of 94% (range 80-100%) were found. No neurovascular complications were seen in our collective, in particular no evidence of hypesthesia in the area of the posterior femoral cutaneous nerve. All patients were able to return to their original level of activity (Tegner Activity Scale 5.2 preoperatively vs. 5.2 postoperatively), while the average time until return to sport was 6.5 months (range 3-12 months). All patients were able to return to their original occupation.