Modified Bunnell suture expands the surgical indication of the treatment of Haglund's syndrome heel pain with endoscope.

The aim of the present study was to develop a method which can solve the problem of partial tearing of the Achilles tendon insertion caused by the debridement for Haglund's syndrome using endoscopy-assisted percutaneous repair. Seven patients with Haglund's syndrome were prospectively recruited. All 7 patients (3 female, 4 male) had intratendinous calcifications. Preoperative diagnosis was made according to the clinical symptoms and diagnosis, medical examination results, plain film radiographs, and magnetic resonance imaging. The patients whose average age was 35.2 years, had experienced symptoms and were treated by conservative methods for 12-24 months (average 17.1 months). All 7 cases were treated with debridement of Achilles tendon insertion site with a standard 4.0 mm bur and underwent repair treatment with a modified Bunnell suture method under direct visualization using arthroscopy. The American Orthopaedic Foot and Ankle Society (AOFAS) score and the changes of the patient's parallel pitch lines were used to evaluate and assess the results. The follow-up period averaged 22 months. The lateral X-ray film after operation of all the heels of the patients showed that sufficient osseous planning of all the patients was completed. None of the patients converted to conventional open surgery. The average AOFAS scores of the 7 cases were improved significantly at final follow-up compared to pretherapy (P<0.005). The results of 5 of the 7 cases were excellent, 2, were good, and 0 was fair or poor. None of the cases had permanent nerve injuries, wound infections or Achilles tendon avulsion. Our study is a supplement of endoscopic repairing and strengthening of the Achilles tendon. The advantages and clinical significance of endoscopy during the treatment of Haglunds syndrome under the premise of strict control of operation indications were further verified.