Femoral morphology differs between deficient and excessive acetabular coverage

Steppacher, SD; Tannast, M; Werlen, S; Siebenrock, KA (2008). Femoral morphology differs between deficient and excessive acetabular coverage. Clinical orthopaedics and related research, 466(4), pp. 782-90. Heidelberg: Springer-Verlag 10.1007/s11999-008-0141-7

[img]
Preview
Text
11999_2008_Article_141.pdf - Published Version
Available under License Publisher holds Copyright.

Download (364kB) | Preview

Structural deformities of the femoral head occurring during skeletal development (eg, Legg-Calvé-Perthes disease) are associated with individual shapes of the acetabulum but it is unclear whether differences in acetabular shape are associated with differences in proximal femoral shape. We questioned whether the amount of acetabular coverage influences femoral morphology. We retrospectively compared the proximal femoral anatomy of 50 selected patients (50 hips) with developmental dysplasia of the hip (lateral center-edge angle [LCE] < or = 25 degrees ; acetabular index > or = 14 degrees ) with 45 selected patients (50 hips) with a deep acetabulum (LCE > or = 39 degrees ). Using MRI arthrography we measured head sphericity, epiphyseal shape, epiphyseal extension, and femoral head-neck offset. A deep acetabulum was associated with a more spherical head shape, increased epiphyseal height with a pronounced extension of the epiphysis towards the femoral neck, and an increased offset. In contrast, dysplastic hips showed an elliptical femoral head, decreased epiphyseal height with a less pronounced extension of the epiphysis, and decreased head-neck offset. Hips with different acetabular coverage are associated with different proximal femoral anatomy. A nonspherical head in dysplastic hips could lead to joint incongruity after an acetabular reorientation procedure. LEVEL OF EVIDENCE: Level IV, retrospective comparative study. See the Guidelines for Authors for a complete description of levels of evidence.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Orthopaedic, Plastic and Hand Surgery (DOPH) > Clinic of Orthopaedic Surgery

UniBE Contributor:

Steppacher, Simon Damian; Tannast, Moritz and Siebenrock, Klaus-Arno

ISSN:

0009-921X

ISBN:

18288550

Publisher:

Springer-Verlag

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 15:03

Last Modified:

23 Oct 2019 13:58

Publisher DOI:

10.1007/s11999-008-0141-7

PubMed ID:

18288550

Web of Science ID:

000253975700006

BORIS DOI:

10.7892/boris.27483

URI:

https://boris.unibe.ch/id/eprint/27483 (FactScience: 107868)

Actions (login required)

Edit item Edit item
Provide Feedback