Visualization of a cam-type femoroacetabular impingement while squatting using image-matching techniques: a case report

Kensei Yoshimoto, Satoshi Hamai, Hidehiko Higaki, Hirotaka Gondoh, Yasuharu Nakashima

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

The in vivo assessment of the three-dimensional (3D) kinematics of the hip in patients with femoroacetabular impingement (FAI) under weight-bearing conditions has not been previously reported. We evaluated the pre- and postoperative hip kinematics of a 34-year-old man, with a cam-type FAI while squatting, using image-matching techniques with measurement of the rim-neck distance. Post-osteochondroplasty, the α-angle improved from 51.0° to 35.5° and the head-neck offset ratio from 0.04 to 0.23. Coxalgia during squatting disappeared, and the Harris Hip Score improved from 79 to 92 at 1 year post-surgery. Postoperative hip kinematic values (3.8° of posterior pelvic tilt and 101.2° of femoral flexion at 96.8° of maximum hip flexion) were similar to the preoperative values (2.9° of posterior pelvic tilt and 102.7° of femoral flexion at 98.8° of maximum hip flexion). Meanwhile, osteochondroplasty improved the minimum rim-neck distance at maximum hip flexion from 2.0 to 10.4 mm. In vivo 3D visualization of the clearance between the femoral head-neck junction and the acetabulum could assist surgeons in adequately identifying the location of impingement and confirming sufficient resection post-operatively.

本文言語英語
ページ(範囲)1277-1282
ページ数6
ジャーナルSkeletal Radiology
46
9
DOI
出版ステータス出版済み - 9 1 2017

All Science Journal Classification (ASJC) codes

  • 放射線学、核医学およびイメージング

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