Isokinetic evaluation of muscle strength and endurance after treatment of acute Achilles tendon rupture using a tunnel beneath paratenon
10.3760/cma.j.cn115530-20200902-00572
- VernacularTitle:等速肌力测试法评估腱周膜下通道技术治疗急性跟腱断裂疗效的研究
- Author:
Yu JIANG
;
Xin HUANG
;
Yingbo ZHU
;
Jialin ZHANG
;
Xiaoning WANG
;
Kejian WU
- From:
Chinese Journal of Orthopaedic Trauma
2021;23(4):312-317
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To use an isokinetic test to objectively evaluate the recovery of muscle strength and endurance after treatment of acute Achilles tendon rupture using a tunnel beneath paratenon.Methods:A retrospective study was conducted of the 23 patients who had been treated at Department of Orthopedics, The Forth Medical Center, General Hospital of Chinese PLA by a tunnel beneath paratenon for acute Achilles tendon rupture from January 2017 to January 2018. They were 22 males and one female, aged from 26 to 60 years (average, 35.7 years), with 11 right and 12 left sides involved. Surgery was performed 0.5 to 7.0 days (average, 2.7 days) after injury. Length of incision, skin necrosis, infection, re-rupture, ankle-hindfoot score of American Orthopedic Foot & Ankle Society (AOFAS) and Achilles tendon total rupture scores (ATRS) were followed up for 18 months. Surgical outcomes were objectively evaluated by an isokinetic test to compare the recovery of muscle strength and endurance between the affected and normal sides.Results:Skin necrosis, infection or re-rupture occurred in none of the patients. Incision length averaged 1.4 cm (from 1 to 2 cm), AOFAS 99.1 (from 93 to 100, giving an excellent and good rate of 100%), and ATRS 97.0 (from 88 to 100). Isokinetic evaluation showed that the peak torques of ankle plantar flexion and dorsal extension at 5 test speeds (30°/s, 60°/s, 90°/s, 120°/s and 240°/s) were not significantly different between the affected and normal sides ( P>0.05). In the endurance test, the total work of ankle plantar flexion was (691.2±258.8) J on the normal side and (670.6±304.2) J on the affected side, showing no significant difference between the 2 sides ( P>0.05); the total work of ankle dorsal extension at the normal side was (407.3±119.2) J, significantly larger than that at the affected side [(362.2±117.5) J] ( P=0.001). Conclusion:An isokinetic test can be used to objectively evaluate the recovery of muscle strength and endurance after treatment of acute Achilles tendon rupture using a tunnel beneath paratenon.
