Muscle stabilization strategies in people with medial knee osteoarthritis: the effect of instability.
Muscle stabilization strategies in people with medial knee osteoarthritis: the effect of instability.
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DOI：
10.1002/jor.20619
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发表时间：
2008-09
影响因子：
2.8
通讯作者：
Rudolph, Katherine S.
中科院分区：
文献类型：
--
作者：
Schmitt, Laura C.;Rudolph, Katherine S.
膝关节不稳（移位、屈曲）的感觉。在膝关节内侧骨关节炎（OA）患者中很常见。其对膝关节稳定策略的影响尚不清楚。本研究探讨了当膝关节稳定性受到挑战时，膝关节不稳定性对步行时肌肉活动的影响。20名内侧膝关节OA患者参与研究，根据日常活动中自我报告的膝关节不稳定性分为OA稳定性（OAS） （n = 10）和OA不稳定性（非统）（n = 10）。评估股四头肌力量、被动膝关节松弛和内翻对齐与行走时支撑面外侧平移时膝关节不稳定和肌肉收缩的关系。两组间膝关节运动学差异不大；然而，在肌肉激活方面有明显的差异。非统组在侧移术前、中、后均使用较大的内侧肌肉收缩。自我报告的膝关节不稳定预测内侧肌肉收缩，但内侧松弛和肢体对齐不能预测。非统组织受试者使用的高强度肌肉收缩似乎是一种无效的稳定膝关节的策略。不稳定和高度收缩会损害关节的完整性，这应该是未来研究的重点。
The sensation of knee instability (shifting, buckling. and giving way) is common in people with medial knee osteoarthritis (OA). Its influence on knee stabilization strategies is unknown. This study investigated the influence of knee instability on muscle activation during walking when knee stability was challenged. Twenty people with medial knee OA participated and were grouped as OA Stable (OAS) (n = 10) and OA Unstable (OAU) (n = 10) based on self-reported knee instability during daily activities. Quadriceps strength, passive knee laxity, and varus alignment were assessed and related to knee instability and muscle cocontraction during walking when the support surface translated laterally. Few differences in knee joint kinematics between the groups were seen; however, there were pronounced differences in muscle activation. The OAU group used greater medial muscle cocontraction before, during, and following the lateral translation. Self-reported knee instability predicted medial muscle cocontraction, but medial laxity and limb alignment did not. The higher muscle cocontraction used by the OAU subjects appears to be an ineffective strategy to stabilize the knee. Instability and high cocontraction can be detrimental to joint integrity, and should be the focus of future research.
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DOI：
10.1002/art.22889
发表时间：
2007-08-15
期刊：
ARTHRITIS & RHEUMATISM-ARTHRITIS CARE & RESEARCH
影响因子：
--
作者：
Schmitt, Laura C.;Rudolph, Katherine S.
通讯作者：
Rudolph, Katherine S.
DOI：
10.2106/00004623-199808000-00006
发表时间：
1998-08-01
影响因子：
5.3
作者：
Irrgang, JJ;Snyder-Mackler, L;Harner, CD
通讯作者：
Harner, CD
影响因子：
7
作者：
Baliunas, AJ;Hurwitz, DE;Andriacchi, TP
通讯作者：
Andriacchi, TP
影响因子：
27.4
作者：
Carmona, L;Ballina, J;Laffon, A
通讯作者：
Laffon, A
DOI：
10.1073/pnas.83.9.2879
发表时间：
1986-05-01
影响因子：
11.1
作者：
HODGE, WA;FIJAN, RS;MANN, RW
通讯作者：
MANN, RW