Accuracy of acetabular cup placement during anterolateral supine total hip arthroplasty using intraoperative fluoroscopy: a retrospective study

Journal of Orthopaedic Surgery and Research

Research Article

Hirohisa Fujimaki¹  Takashi Hisatome¹  Shuhei Oda¹  Eiji Cho²  Kazuyoshi Nakanishi² 

[1] Department of Orthopaedic Surgery, Nihon University Hospital, Tokyo, Japan;Department of Orthopaedic Surgery, Nihon University Itabashi Hospital, Tokyo, Japan;

关键词: Intraoperative fluoroscopy;    Total hip arthroplasty;    Anterolateral supine approach;    Component position;    Accuracy;   

DOI  :  10.1186/s13018-022-03422-9

 received in 2022-10-23, accepted in 2022-11-25,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundIn our institution, total hip arthroplasty (THA) is performed using the anterolateral supine (ALS) approach with intraoperative fluoroscopy. This study aimed to investigate and review the accuracy of acetabular cup placement in ALS-THA using intraoperative fluoroscopy.MethodsA total of 142 patients with 154 joints (mean age 64.3 years, 30 males and 112 females) underwent ALS-THA with intraoperative fluoroscopy at the same institution. The target angle of the cup position was set at 40° for radiographic inclination (RI) and 5°–25° for radiographic anteversion (RA) based on the functional pelvic plane according to the pelvic motion during individual postural changes. The cup position angle was measured using postoperative computed tomography, and the error in the target angle was investigated.ResultsThe target angle of RI was 40°, and the postoperative RI was 39.3° ± 4.3°. The target angle of the RA was 17° ± 2.6°, and the postoperative RA was 20.6° ± 3.7°. The absolute values of the error from the target angle were 3.6° ± 2.5° for RI and 4.2° ± 3.3° for RA.For RI and RA, 67.5% (104/154 joints) were within ± 5° of the target and 96.1% (148/154 joints) were within ± 10°.ConclusionsThe accuracy of cup positioning in ALS-THA using intraoperative fluoroscopy was good and appeared comparable to that of various navigation systems.

【 授权许可】

CC BY   
© The Author(s) 2022

【 图 表 】

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Fig. 2