[Application of percutaneous transcalcaneal reconstruction technique for acute Achilles tendon insertion avulsion]

To introduce a percutaneous transcalcaneal reconstruction technique for the treatment of acute Achilles tendon insertion avulsion, and to assess its short-term effectiveness.

Between January 2014 and June 2020, 25 patients with acute Achilles tendon insertion avulsion were treated with the percutaneous transcalcaneal reconstruction technique. There were 24 males and 1 female, with an average age of 44.1 years (range, 34-60 years). The disease duration was 1-5 days (mean, 1.8 days). There were 23 cases of sports injury and 2 cases of fall injury. The preoperative American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score was 55.6±6.7 and the visual analogue scale (VAS) score was 4.6±0.5. The operation time, intraoperative blood loss, hospital stay, related complications, the time of weight-bearing standing with a slightly raised heel, and the time of walking with a slightly raised heel were recorded. The AOFAS ankle-hindfoot score and the VAS score were used to evaluate the ankle joint function and the pain. Achilles tendon continuity was examined by color Doppler ultrasonography and healing of the Achilles tendon was examined by MRI. At last follow-up, the Arner-Lindholm scale was used to evaluate the effectiveness.

The operation time was 45-50 minutes (mean, 46.8 minutes). The intraoperative blood loss was 10-20 mL (mean, 13.8 mL). The hospital stay was 4-6 days (mean, 4.9 days). The color Doppler ultrasonography before discharge showed the continuous recovery of the Achilles tendon. All incisions healed by first intention, and there was no complication such as sural nerve injury or deep venous thrombosis of lower extremity. All patients were followed up 15-50 months (mean, 30.3 months). After 14-21 days, the patients started to weight-bearing stand with a slightly raised heel, with an average of 17.6 days; they began to walk with a slightly raised heel at 20-28 days, with an average of 23.7 days. MRI showed that the Achilles tendon healed at last follow-up. The AOFAS score was 90.0±3.2 at 6 months after operation and 95.8±4.5 at last follow-up, and the VAS scores were 1.7±0.6 at 6 months and 1.0±0.8 at last follow-up, which were all improved when compared with those before operation (P<0.05); the difference was also significant between the two time points after operation (P<0.05). According to the Arner-Lindholm scale, the effectiveness at last follow-up was excellent in 25 cases. All patients had returned to sports.

The percutaneous transcalcaneal reconstruction technique is a promising alternative option in treating acute Achilles tendon insertion avulsion, for it can achieve early rehabilitation and better ankle function recovery.