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Are there clinically relevant anatomical differences of the proximal femur in patients with mild dysplastic and primary hip osteoarthritis? A CT-based matched-pairs cohort study.
- Source :
-
Clinical radiology [Clin Radiol] 2019 Nov; Vol. 74 (11), pp. 896.e17-896.e22. Date of Electronic Publication: 2019 Aug 26. - Publication Year :
- 2019
-
Abstract
- Aim: To investigate the three-dimensional anatomy and shape of the proximal femur, comparing patients with secondary osteoarthritis (OA) due to mild developmental dysplasia of the hip (DDH) and primary hip OA.<br />Materials and Methods: This retrospective radiographic computed tomography (CT)-based study investigated proximal femoral anatomy in a consecutive series of 84 patients with secondary hip OA due to mild DDH (Crowe type I&II/Hartofilakidis A) compared to 84 patients with primary hip OA, matched for gender, age at surgery, and body mass index.<br />Results: Men with DDH showed higher neck shaft angles (127±5° vs. 123±4°; p<0.001), whereas women with DDH had a larger femoral head diameter (46±4 vs. 44±3 mm; p=0.002), smaller femoral offset (36±5 vs. 40±4 mm; p<0.001), decreased leg torsion (25±13° vs. 31±16°; p=0.037), and a higher neck shaft angle (128±7° vs. 123±4°; p<0.001) compared to primary OA patients. Similar patterns of the three-dimensional endosteal canal shape of the proximal femur, but a high inter-individual variability for femoral canal torsion at the meta-diaphyseal level were found for DDH and primary OA patients.<br />Conclusion: Standard cementless stem designs are suitable to treat patients with secondary hip OA due to mild DDH; however, high patient variability and subtle anatomical differences in the proximal femur should be respected.<br /> (Copyright © 2019 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved.)
- Subjects :
- Arthroplasty, Replacement, Hip
Female
Hip Dislocation, Congenital surgery
Humans
Male
Middle Aged
Observer Variation
Osteoarthritis, Hip surgery
Retrospective Studies
Sex Characteristics
Tomography, X-Ray Computed
Femur pathology
Hip Dislocation, Congenital pathology
Osteoarthritis, Hip pathology
Subjects
Details
- Language :
- English
- ISSN :
- 1365-229X
- Volume :
- 74
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Clinical radiology
- Publication Type :
- Academic Journal
- Accession number :
- 31466797
- Full Text :
- https://doi.org/10.1016/j.crad.2019.06.032