Standard versus low-dose computed tomography for assessment of acetabular fracture reduction using novel step and gap measurement technique

被引:1
作者
Robles, Abrianna S. [1 ]
Piple, Amit S. [2 ]
DeSanto, Donald J. [1 ]
Lamb, Ashley [2 ]
Gibbs, Stephen J. [3 ]
Heckmann, Nathanael D. [2 ]
Marecek, Geoffrey S. [1 ]
机构
[1] Cedars Sinai Med Ctr, Dept Orthopaed Surg, Los Angeles, CA 90048 USA
[2] Univ Southern Calif, Dept Orthopaed Surg, Los Angeles, CA USA
[3] Hughston Clin, Columbus, GA USA
关键词
Posterior wall; Acetabular fractures; Computed tomography; Measurement technique; Gap; Step; POSTERIOR WALL; POSTOPERATIVE CT; FIXATION; PROTOCOL; HIP;
D O I
10.1007/s00590-023-03616-9
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
PurposeQuality of reduction is of paramount importance after acetabular fracture and is best assessed on computed tomography (CT). A recently proposed measurement technique for assessment of step and gap displacement is reproducible but has not been validated. The purpose of this study is to validate a well-established measurement technique against known displacements and to determine if it can be used with low dose CT.MethodsPosterior wall acetabular fractures were created in 8 cadaveric hips and fixed at known step and gap displacements. CT was performed at multiple radiation doses for each hip. Four surgeons measured step and gap displacement for each hip at all doses, and the measurements were compared to known values.ResultsThere were no significant differences in measurements across surgeons, and all measurements were found to have positive agreement. Measurement error < 1.5 mm was present in 58% of gap measurements and 46% of step measurements. Only for step measurements at a dose of 120 kVp did we observe a statistically significant measurement error. There was a significant difference in step measurements made by those with greater and those with fewer years in practice.ConclusionOur study suggests this technique is valid and accurate across all doses. This is important as it may reduce the amount of radiation exposure for patients with acetabular fractures.
引用
收藏
页码:3703 / 3709
页数:7
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