Are Portable Imaging Intraoperative Radiographs Helpful for Assessing Adequate Acetabular Cup Positioning in Total Hip Arthroplasty?

다국어 초록 (Multilingual Abstract)

Despite advances in surgical techniques and instrumentation, current intra-operative

estimations of acetabular version in total hip arthroplasty are of limited accuracy.

In the present study, two experienced orthopedic surgeons compared intra-operatively

measured (using portable imaging) anteversions and vertical inclinations of

acetabular components with those measured using standardized radiographs postoperatively

in 40 patients. Of the all vertical inclinations measured from intra-operative

radiographs, 72.5% (n=29) were within ±2°, and 97.5% (n=39) were within

±5° of those determined using post-operative radiographs, and for anteversion,

52.5% (n=21) were within ±2°, and 97.5% (n=39) were within ±5°. Post-operative

radiographs demonstrated that 90.0% (n=36) of vertical inclinations and anteversions

were within the adequate zone. Obviously, our method has its limitations,

but the authors conclude that the method described in this article better allows surgeons

to verify acetabular version intra-operatively. In particular, the described

method is suitable in cases with a deformed acetabular anatomy and difficult revision

surgery.

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