Evaluation of ischial weight-bearing orthoses, based on in-vivo hip joint force measurements.
case_report · Level V
Where this comes from
- Record sourced from PubMed, PMID 23916232.
- Also identified by DOI 10.1016/0268-0033(94)90003-5.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
The reduction of hip joint forces by ischial weight-bearing orthoses, used for the treatment of Legg-Perthes and other joint diseases, was measured in vivo in a patient with two instrumented endoprostheses. Three different types of orthoses reduced hip joint loading by about 30%, independent of their cuff design and the position in which the femur was held. The direction of the joint forces was changed in such a way that the size of the load-carrying joint areas decreased by up to 3.4% with two conventional orthoses. With the third model with improved containment of the femoral head this area increased by up to 8.2%. All the orthoses studied support the pelvis too close to the affected joint, leading to insufficient load reduction. A design concept is proposed which prevents tilting of the pelvis in the frontal plane and may improve the force reduction at the hip joint.
Anatomy
- hip