Achillon versus modified minimally invasive repair treatment in acute Achilles tendon rupture.

Purpose: To date, the best treatment of acute Achilles tendon rupture (AATR) is still inconclusive. Achillon seems to be a promising approach with satisfactory function and low complication rate. We hypothesize a modified minimally invasive repair (MMIR), which provides direct visualization of proximal tendon stump without specialized equipment that could provide comparable results. This trial is aimed to evaluate the functional and surgical outcomes of MMIR comparing with Achillon.

Methods: From February 2013 to February 2017, 114 patients with AATR were enrolled in this trial, underwent an alternative operation (Achillon or MMIR), and accelerated rehabilitation protocol. Forty-four patients took the Achillon and the other 70 patients took the MMIR at their subjective choice. One hundred eleven full follow-up data were obtained including Achilles tendon total rupture score (ATRS), time back to work, rerupture rate, overall complication rate, and operation time.

Results: There was no significant difference between groups in demographic characters. There was no statistical difference between both groups regarding to time return to work and ATRS at 3rd, 6th, 12th, and 24th month, respectively. Five reruptures and two Achilles tendons tethering to skins were found in the Achillon group, and two reruptures and one sural nerve injury in the MMIR group. No wound infection and dehiscence occurred. Overall complication rate in the Achillon group is higher (16.3% vs. 4.4%, = 0.044). The operation time of Achillon is less than MMIR (34.84 vs. 39.71, < 0.001).

Conclusion: Both techniques combining with accelerated rehabilitation showed to be reliable and effective. MMIR is safer and more economical, and Achillon is faster.