Endoscopic-assisted locking block modified Krackow technique combined with a V-Y flap for chronic Achilles tendon rupture.

Abstract

The purpose of this study was to evaluate the clinical outcomes of the endoscopic-assisted locking block modified Krackow technique with a V-Y flap. The hypothesis was that the minimally invasive technique can reduce wound complications and facilitate early recovery. In total, 29 men with chronic Achilles tendon rupture who underwent either minimally invasive technique (n = 13) or open repair (n = 16) at our department between 2013 and 2019 were retrospectively analyzed. The rate of complications, time to return to moderate-intensity exercise, American Orthopedic Foot and Ankle Society ankle hindfoot score, Achilles tendon Total Rupture Score, heel-rise repetitions in 1min, heel-rise height, and bilateral calf circumference at 6months, 1year, and 2years postoperatively were recorded. All incisions healed primarily in the minimally invasive technique group; however, three patients in the open repair group experienced wound complications. The time to return to moderate-intensity exercise, American Orthopedic Foot and Ankle Society score, Achilles tendon Total Rupture Score, heel-rise repetition ratio, and heel-rise height ratio at 6months postoperatively in the minimally invasive technique group were significantly better than those in the open repair group. However, it was not significantly different between both groups at 2years postoperatively. Endoscopy allowed scar tissue and adhesions to be removed, allowing the tendon ends to be mobilized out of the small proximal and distal incisions.Minimally invasive technique may result in a lower wound complication incidence and provide better early functional recovery and return to moderate-intensity exercise time than the conventional open procedure in treating chronic Achilles tendon ruptures. Wuxi Ninth People's Hospital Medical Ethical Committee, LW2021026. III.