Can the hip joint center be estimated from pelvic dimensions in dysplastic hips?

Masanori Fujii, Tetsuro Nakamura, Toshihiko Hara, Yasuharu Nakashima

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Background We aimed to determine correlations between the hip joint center position and pelvic dimensions and whether the three-dimensional position of the original hip joint center could be estimated from pelvic landmarks in dysplastic and normal hips. Methods We reviewed the pelvic CT scans of 70 patients (70 hips) with hip dysplasia. Seventy-seven normal hips were used as controls. The hip joint center coordinates (Cx, Cy, and Cz) and pelvic dimensions were measured with reference to the anterior pelvic plane coordinate system. Multiple regression formulas were used to estimate the original hip joint center. Results The hip center for both dysplastic and normal hip was highly correlated with the distance between the anterior superior iliac spine (ASIS) in the coronal plane (r = 0.76 and 0.84), the distance from the ASIS to the pubic tubercle in the sagittal plane (r = 0.81 and 0.76), and distance from the pubic tubercle to the most posterior point of the ischium on the transverse plane (r = 0.76 and 0.78). The hip joint center could be estimated within a 5-mm error for more than 80% of hips on their respective axes in both dysplastic and normal hips. Conclusions The three-dimensional position of the original hip joint center was correlated with pelvic dimensions, and can be estimated with substantial accuracy using pelvic landmarks as references. Although these results are preliminary, this estimation method may be useful for surgeons planning total hip arthroplasties.

Original languageEnglish
Pages (from-to)1089-1095
Number of pages7
JournalJournal of Orthopaedic Science
Volume22
Issue number6
DOIs
Publication statusPublished - Nov 2017

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Hip Joint
Hip
Spine
Ischium
Hip Dislocation
Arthroplasty

All Science Journal Classification (ASJC) codes

  • Surgery
  • Orthopedics and Sports Medicine

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Can the hip joint center be estimated from pelvic dimensions in dysplastic hips? / Fujii, Masanori; Nakamura, Tetsuro; Hara, Toshihiko; Nakashima, Yasuharu.

In: Journal of Orthopaedic Science, Vol. 22, No. 6, 11.2017, p. 1089-1095.

Research output: Contribution to journalArticle

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