University of British Columbia, Experimental Medicine Program, 602-1355 West 14th, Vancouver V6H1R2, Canada.
Foot Ankle Int. 2009 Dec;30(12):1190-5. doi: 10.3113/FAI.2009.1190.
Despite anecdotal evidence linking overpronation to the onset of Achilles tendinopathy (AT), there is little conclusive evidence of a particular movement pattern of the lower extremity associated with this injury. Therefore, the objective of the present study was to observe differences in the kinematic profiles of healthy runners (CON) and runners with mid-portion Achilles tendinopathy (ATG).
In this cross-sectional analysis, 48 male height and weight matched subjects were invited to participate: 27 with mid-portion Achilles tendon pain and 21 asymptomatic controls. Subjects underwent lower extremity clinical examination, then ran barefoot for 10-trials at a self-selected pace. A 3D motion capture system analysed tri-plane kinematic data for the lower extremity.
The ATG displayed significantly greater sub-talar joint eversion displacement during mid-stance of the running gait (13 +/- 3 degrees vs. 11 +/- 3 degrees; p = 0.04). Trends were observed such that the ATG showed lower peak dorsiflexion velocity (300 +/- 39 degrees/s vs. 330 +/- 59 degrees/s; p = 0.08) and greater overall frontal plane ankle joint range of motion (45 degrees +/- 7 vs. 41 degrees +/- 7; p = 0.09).
We found an increase in eversion displacement of the sub-talar joint in runners with Achilles mid-portion tendinopathy. Based on the findings from this study, there is evidence that devices used to control sub-talar eversion may be warranted in patients with Achilles mid-portion tendinopathy who demonstrate over-pronation during mid-stance of the running gait.
尽管有轶事证据表明过度旋前与跟腱病（AT）的发作有关，但很少有确凿的证据表明下肢的特定运动模式与这种损伤有关。因此，本研究的目的是观察健康跑步者（CON）和中段跟腱病跑步者（ATG）的运动学特征差异。
在这项横断面分析中，邀请了 48 名身高和体重匹配的男性受试者参加：27 名中段跟腱疼痛，21 名无症状对照组。受试者进行了下肢临床检查，然后以自我选择的速度赤脚跑 10 次。一个 3D 运动捕捉系统分析了下肢的三平面运动学数据。
在跑步步态的中间阶段，ATG 的距下关节外翻位移明显更大（13 ± 3° vs. 11 ± 3°；p = 0.04）。观察到的趋势是，ATG 显示出较低的峰值背屈速度（300 ± 39°/s 与 330 ± 59°/s；p = 0.08）和更大的整个额状面踝关节活动范围（45° ± 7°与 41° ± 7°；p = 0.09）。
我们发现，跟腱中段病跑步者的距下关节外翻位移增加。基于本研究的结果，有证据表明，在跑步步态中间阶段表现出过度旋前的跟腱中段病患者中，使用控制距下关节外翻的设备可能是合理的。
