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Clinical Orthopaedics and Related Research®

Published in:

01-07-2012 | Clinical Research

Preoperative Three-dimensional CT Predicts Intraoperative Findings in Hip Arthroscopy

Authors: Benton E. Heyworth, MD, Mark M. Dolan, MD, Joseph T. Nguyen, MPH, Neal C. Chen, MD, Bryan T. Kelly, MD

Published in: Clinical Orthopaedics and Related Research® | Issue 7/2012

Abstract

Background

Currently, plain radiographs and MRI are the standard imaging modalities used for diagnosing femoroacetabular impingement (FAI) and preoperative planning for arthroscopic treatment of FAI. The value of three-dimensional (3D) CT for these purposes is unclear.

Questions/purposes

We therefore determined the reliability of CT assessment of FAI and whether CT findings of hip disease predict arthroscopic findings.

Methods

We retrospectively assessed the preoperative CT scans of 118 patients who underwent primary hip arthroscopy. Intraoperative findings, including size of the cam lesion, presence of an acetabular labral articular disruption lesion, and one of four types of labral tear were recorded and compared with the retrospectively read CT findings.

Results

Agreement analysis between CT and intraoperative detection of FAI yielded kappa values of 0.48 for cam lesions and 0.16 for pincer lesions. Increasing values for the CT-based alpha angle correlated with increasing severity of arthroscopically assessed acetabular labral articular disruption grade. Each pattern of FAI predicted a specific labral tear type.

Conclusions

Our data suggest CT has moderate value in predicting mechanically based labral tear patterns, although better parameters for assessment of pincer lesions are needed. Diagnostic assessment of patients with suspected FAI may be improved with use of 3D CT.

Level of Evidence

Level III, diagnostic study. See the Guidelines for Authors for a complete description of levels of evidence.

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Title: Preoperative Three-dimensional CT Predicts Intraoperative Findings in Hip Arthroscopy
Authors: Benton E. Heyworth, MD
Mark M. Dolan, MD
Joseph T. Nguyen, MPH
Neal C. Chen, MD
Bryan T. Kelly, MD
Publication date: 01-07-2012
Publisher: Springer-Verlag
Published in: Clinical Orthopaedics and Related Research® / Issue 7/2012
Print ISSN: 0009-921X
Electronic ISSN: 1528-1132
DOI: https://doi.org/10.1007/s11999-012-2331-6

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Preoperative Three-dimensional CT Predicts Intraoperative Findings in Hip Arthroscopy

Abstract

Background

Questions/purposes

Methods

Results

Conclusions

Level of Evidence

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Questions/purposes

Methods

Results

Conclusions

Level of Evidence

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