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首页> 外文期刊>Deutsche Zeitschrift fur Sportmedizin >Funktionelle Stabilität am Kniegelenk - eine neue Untersuchungsmethode
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Funktionelle Stabilität am Kniegelenk - eine neue Untersuchungsmethode

机译：髋关节功能Stabilitä t日膝关节——新的调查

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摘要

Stability of the knee joint may be limiting performance in sports. Especially the ACL frequently gets injured. Several testing methods are known to diagnose the stability of the knee joint. Most of them have two disadvantages: 1. Data displayed by pointer-and-scale meters are not suited for transient measurement. 2. The devices and methods can only be used, if the patient lies on the back with the knee joint muscles relaxed. We developed a device to measure the tibial translation at the knee joint. With the corresponding method, we are able to measure the drawer under functional conditions. The purpose of the study was to measure the size of the tibial translation and reflex activities of the knee joint muscles in dependence on AC-status, load of the leg and size and dynamic of the applied mechanical stimulus. We compared a group of subjects (N=12) with AC-reconstruction with a control group (N=12). In our investigations we induced an anterior drawer while the patients were standing upright with the knees slightly bend: The force, the knee joint angle and the EMGs of hamstrings and quadriceps were recorded and with the new device the anteroposterior shift of the tibia was measured. The load of the leg (loaded/unloaded), the force applied to evoke the drawer (100N/200N) and the dynamic of the applied force (slow/fast) were varied. The drawer reached a maximum of 6,0 mm under the condition leg unloaded/200N/slow. Under the condition "fast", reflex activities with a latency of about 60-70ms were recorded. We expect to measure the drawer at the knee joint exactly under functional conditions. Muscular contribution to knee joint stability can be estimated by recording reflexes of these muscles with the EMG.
机译：膝关节的稳定性可能会限制在运动的表现。经常受伤。众所周知,诊断膝关节的稳定性关节。数据显示由pointer-and-scale米不适合瞬态测量。只能使用设备和方法,如果病人躺在膝关节肌肉放松。在膝关节胫骨翻译。相应的方法,我们能够测量功能条件下的抽屉里。这项研究的目的是测量的大小的胫骨翻译和反射活动膝关节的肌肉的依赖腿的ac状态、负载大小和动态应用的机械刺激。组(N = 12) AC-reconstruction与对照组(N = 12)。调查我们诱导前抽屉里而患者直立行走的膝盖稍微弯曲:膝关节的力量角度和腿筋和股四头肌的肌电图记录和新设备吗胫骨测定前后的转变。腿的负载(加载/卸载)应用于唤起抽屉(100 n / 200 n)和动态的作用力(慢/快)多样。条件下腿卸载/ 200 n /慢。“快速”的条件,用反射活动延迟约60 - 70 ms的记录。测量膝关节完全的抽屉在功能的条件下。对膝关节稳定的贡献估计通过记录这些肌肉的反应肌电图。

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