NDLI: Hip stress reduction after Chiari osteotomy

Content Provider	Springer Nature Link
Author	Herman, S. Jaklič, A. Herman, S. Iglič, A. Kralj Iglič, V.
Copyright Year	2002
Abstract	A mathematical model was developed to study the effect of the Chiari osteotomy on the distribution of contact hip stress over the weight-bearing area. It was shown that Chiari osteotomy can increase the weight-bearing area directly (on the lateral side), owing to the additional area formed by theala ossis ilii segment, and indirectly (on the medial side), owing to the shift of the stress pole in the medial direction. As a consequence, the contact hip stress is reduced after Chiari osteotomy. The indirect effect is important and often larger than the direct one. Using the proposed mathematical model and standard anteroposterior roentgenographs from archives, the average peak stress on the weight-bearing area, normalised with respect to the body weight (p$_{max}$/W$_{B}$), was determined before and after Chiari osteotomy (8310m$^{−2}$ and 4480m$^{−2}$, respectively) on a population of 29 dysplastic hips. The difference was statistically significant (p<0.005). Based on the results presented, it can be concluded that the hip joint contact stress in dysplastic hips considerably decreases after Chiari osteotomy, indicating a favourable biomechanical effect of this operation.
Starting Page	369
Ending Page	375
Page Count	7
File Format	PDF
ISSN	01400118
Journal	Medical and Biological Engineering and Computing
Volume Number	40
Issue Number	4
e-ISSN	17410444
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chiari osteotomy Hip joint Contact stress Mathematical modelling Human Physiology Neurosciences Imaging Radiology Computer Applications Biomedical Engineering
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering Computer Science Applications

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