Alfredson H, Pietilä T, Lorentzon R
Department of Orthopaedic Surgery, University Hospital of Northern Sweden, Umeå, Sweden.
Am J Sports Med. 1996 Nov-Dec;24(6):829-33. doi: 10.1177/036354659602400620.
We evaluated 10 men and 3 women (mean age, 44 +/- 8.5 years) with chronic Achilles tendinitis who underwent surgical treatment. Surgery was followed by immobilization in a weightbearing below-the-knee plaster cast for 6 weeks and a stepwise increasing strength training program. We prospectively studied calf muscle strength on the injured and noninjured sides preoperatively and at 16, 26, and 52 weeks postoperatively. Preoperatively, concentric peak torque in dorsiflexion at 90 deg/sec and plantar flexion at 225 deg/sec was significantly lower on the injured side. Postoperatively, concentric plantar flexion peak torque on the injured side increased significantly between Weeks 16 and 26 at 90 deg/sec but was significantly lower than the noninjured side from Weeks 16 to 52 at 90 and 225 deg/sec. Dorsiflexion peak torque at 90 and 225 deg/sec increased between Weeks 0 and 26 and was significantly higher on the injured side at Week 26. Eccentric plantar flexion peak torque was significantly lower on the injured side at Week 26 but not at 1 year. This prospective study demonstrates that 6 months of postoperative rehabilitation for chronic Achilles tendinitis is not enough to recover concentric and eccentric plantar flexion muscle strength compared with the noninjured side.
我们评估了10名男性和3名女性（平均年龄44±8.5岁），他们患有慢性跟腱炎并接受了手术治疗。手术后，在负重的膝下石膏固定6周，并进行逐步增强的力量训练计划。我们前瞻性地研究了术前以及术后16周、26周和52周时患侧和未患侧小腿肌肉的力量。术前，患侧在90度/秒背屈和225度/秒跖屈时的同心峰值扭矩显著较低。术后，患侧在90度/秒时，同心跖屈峰值扭矩在第16周和第26周之间显著增加，但在第16周至52周时，在90度/秒和225度/秒时均显著低于未患侧。在90度/秒和225度/秒时，背屈峰值扭矩在第0周和第26周之间增加，并且在第26周时患侧显著更高。在第26周时，患侧的离心跖屈峰值扭矩显著较低，但在1年时并非如此。这项前瞻性研究表明，与未患侧相比，慢性跟腱炎术后6个月的康复不足以恢复同心和离心跖屈肌肉力量。
