|
KMID : 1148120120020010006
|
|
Journal of Advanced Spine Surgery
2012 Volume.2 No. 1 p.6 ~ p.10
|
|
|
Compensatory Mechanism of Sagittal Imbalance
|
|
Lee Chong-Suh
|
|
|
Abstract
|
|
|
|
To understand the compensatory mechanisms of knee and hip joint for sagittal imbalance, it is very important to investigate the response of each joint to the abnormal condition of other joint. Most of studies so far were limited to the response of spine and hip joint to the sagittal imbalance and it is very rare to include the response of knee joint. We assume four conditions and investigate the response of each joint to the abnormal condition of other joint 1. The normal response of spine and pelvis to the knee flexion contracture 2. The response of spine and pelvis to the correction of knee flexion contracture 3. The response of knee and hip joint to the loss of lumbar lordosis 4. The response of knee and hip joint to the restoration of knee and hip joint The results show that the flextion contracture of knee joint makes hip jont flexed and loss of lumbar lordosis with shift the sagittal balance forward. When flexion contracure was corrected like TKRA, hip joint also extended and lumbar lordosis increase and sagittal balance moves backward. Loss of lumbar lordosis makes more positive sagittal balance and hip joint becomes extended and knee joint flexed. The restoration of lumbar lordosis, sagittal balance shift backward and knee joint extended. However, if restoration of lumbar lordosis is not complete, hip joint remains extended, while knee joint becomes normal position, the extended position.
|
|
|
KEYWORD
|
|
|
Knee joint, Hip joint, Sagittal imbalance, Compensatory mechanism
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|