Department of Orthopedic Surgery, Eulji University School of Medicine, Uijeongbu Hospital, Uijeongbu-si, Korea.
Department of Orthopaedic Surgery, College of Medicine, Chungbuk National University, Cheongju, Korea.
J Orthop Surg (Hong Kong). 2021 Sep-Dec;29(3):23094990211052095. doi: 10.1177/23094990211052095.
: Residual functional ankle instability regardless of the restoration of mechanical stability after the lateral ligament repair or reconstruction can cause recurrent sprain. The purpose of this study was to identify the sequential changes of joint-position sense, peroneal strength, postural control, and functional performance ability after the modified Broström procedure (MBP) for chronic ankle instability. : A total of 46 patients (46 ankles) who underwent the MBP for chronic ankle instability were eligible for this study and were followed up for 1 year postoperatively. The changes of joint-position sense and peroneal strength were periodically evaluated with an isokinetic dynamometer. Postural control ability was evaluated using a one-leg stance test with eyes closed. The functional performance ability examination comprised a one-leg hop test, a six-meter hop test, and a cross three-meter hop test. : The error in joint-position sense significantly improved from a mean 4.3° to 2.8° ( < 0.001). Peak torque for eversion significantly improved from a mean 18.2 Nm to 21.2 Nm ( = 0.024). Balance retention time significantly improved from a mean 4.7 s to 6.4 s ( < 0.001). Among the functional performance tests, only the one-leg hop test showed a significant improvement postoperatively ( = 0.031). At 1 year postoperatively, the recovery ratios compared to the unaffected ankle were 67.9% in joint-position sense ( < 0.001), 86.9% in peroneal strength ( = 0.012), and 74.4% in postural control ( < 0.001), with significant side-to-side differences. : Although joint-position sense, peroneal strength, postural control, and functional performance ability were significantly improved after the MBP, recovery ratios compared to the unaffected ankle were insufficient up to 1 year postoperatively. : Level IV (prospective case series).
尽管外侧韧带修复或重建后恢复了机械稳定性，但仍可能存在残余的功能性踝关节不稳定，导致反复扭伤。本研究旨在探讨改良 Broström 手术（MBP）治疗慢性踝关节不稳定后关节位置觉、腓骨肌力量、姿势控制和功能性运动能力的变化。
共有 46 例（46 足）慢性踝关节不稳定患者接受 MBP 治疗，符合本研究条件，并在术后 1 年进行随访。采用等速测力计定期评估关节位置觉和腓骨肌力量的变化。单腿闭眼站立试验评估姿势控制能力。功能性运动能力检查包括单腿跳跃试验、六米跳跃试验和交叉三米跳跃试验。
关节位置觉的误差从平均 4.3°显著改善至 2.8°（<0.001）。外翻峰值扭矩从平均 18.2 Nm 显著改善至 21.2 Nm（=0.024）。平衡保持时间从平均 4.7 s 显著改善至 6.4 s（<0.001）。在功能性运动能力测试中，只有单腿跳跃试验在术后表现出显著改善（=0.031）。术后 1 年，与未受伤侧相比，关节位置觉的恢复比例为 67.9%（<0.001），腓骨肌力量为 86.9%（=0.012），姿势控制为 74.4%（<0.001），存在显著的侧间差异。
尽管 MBP 治疗后关节位置觉、腓骨肌力量、姿势控制和功能性运动能力均显著改善，但与未受伤侧相比，术后 1 年的恢复比例仍不足。
四级（前瞻性病例系列）。
