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
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. - MATERIALS AND METHODS - This retrospective radiographic computed tomography (CT)-based...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
[November 2019]
|
| In: |
Clinical radiology
Year: 2019, Volume: 74, Issue: 11, Pages: 896.e17-896.e22 |
| ISSN: | 1365-229X |
| DOI: | 10.1016/j.crad.2019.06.032 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1016/j.crad.2019.06.032 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0009926019303496 
|
| Author Notes: | M.M. Innmann, S. Hasberg, W. Waldstein, G. Grammatopoulos, H.S. Gill, E.C. Pegg, P.R. Aldinger, C. Merle |
| Summary: | 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. - 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. - 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. - 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. |
|---|---|
| Item Description: | Available online 26 August 2019 Gesehen am 11.11.2019 |
| Physical Description: | Online Resource |
| ISSN: | 1365-229X |
| DOI: | 10.1016/j.crad.2019.06.032 |