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Is the Acetabular Cup Orientation After Total Hip Arthroplasty on a Two Dimension or Three Dimension Model Accurate?

Overview
Journal Int Orthop
Specialty Orthopedics
Date 2014 Apr 17
PMID 24737148
Citations 17
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Abstract

Purpose: Malposition of the acetabular component in total hip arthroplasty (THA) is a common surgical problem that can lead to hip dislocation, reduced range of motion and may result in early loosening. The aim of this study is to validate the accuracy and reproducibility of a single x-ray image based 2D/3D reconstruction technique in determining cup inclination and anteversion against two different computer tomography (CT)-based measurement techniques.

Methods: Cup anteversion and inclination of 20 patients after cementless primary THA was measured on standard antero-posterior (AP) radiographs with the help of the single x-ray 2D/3D reconstruction program and compared with two different 3D CT-based analyses [Ground Truth (GT) and MeVis (MV) reconstruction model].

Results: The measurements from the single x-ray 2D/3D reconstruction technique were strongly correlated with both types of CT image-processing protocols for both cup inclination [R²=0.69 (GT); R²=0.59 (MV)] and anteversion [R²=0.89 (GT); R²=0.80 (MV)].

Conclusions: The single x-ray image based 2D/3D reconstruction technique is a feasible method to assess cup position on postoperative x-rays. CT scans remain the golden standard for a more complex biomechanical evaluation when a lower tolerance limit (+/-2 degrees) is required.

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Pieroh P, Lenk M, Hohmann T, Grunert R, Wagner D, Josten C Sci Rep. 2019; 9(1):3141.

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Pelvic pitch and roll during total hip arthroplasty performed through a posterolateral approach. A potential source of error in free-hand cup positioning.

Gonzalez Della Valle A, Shanaghan K, Benson J, Carroll K, Cross M, McLawhorn A Int Orthop. 2018; 43(8):1823-1829.

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CT-based Navigation System Using a Patient-Specific Instrument for Femoral Component Positioning: An Experimental in vitro Study with a Sawbone Model.

Lee S, Kim J, Hong J, Hoon Baek S, Kim S Yonsei Med J. 2018; 59(6):769-780.

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Assessment of pelvic tilt in anteroposterior radiographs by means of tilt ratios.

Schwarz T, Benditz A, Springorum H, Matussek J, Heers G, Weber M Arch Orthop Trauma Surg. 2018; 138(8):1045-1052.

PMID: 29651575 DOI: 10.1007/s00402-018-2931-z.


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