Radiological Measurement of Femoral Stem Version Using Lateral Decubitus Method: A Prospective Study

Completed

• Conditions: Total Hip Replacement; Arthroplasty
• Interventions: Radiation: Radiological measurement of femoral stem version

• Registration Number: NCT02554149
• Lead Sponsor: Seoul National University Bundang Hospital

Brief Summary

The purpose of this study was to develop a radiological method to measure stem anteversion and to determine its validity and reliability.

Detailed Description

Version of the femoral stem is an important factor influencing the risk of dislocation after total hip replacement (THR) as well as the position of the acetabular component. However, there is no radiological method of measuring stem anteversion described in the literature. Investigators propose a radiological method to measure stem version and have assessed its reliability and validity. In 40 patients who underwent THR, a hip radiograph and CT scan were taken to measure stem anteversion.

Study Timeline

• Study Start: 2015-09
• Study First Submitted: 2015-09-15
• Study First Submitted QC: 2015-09-17
• Study First Posted: 2015-09-18
• Status Verified: 2016-03
• Primary Completion: 2016-03
• Study Completion: 2016-03
• Last Update Submitted: 2016-03-28
• Last Update Posted: 2016-03-29

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 40

Inclusion Criteria

• Investigators recruited 40 consecutive patients who underwent THR between October 2015 and December 2015

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Exclusion Criteria

• patients who could not extend the hip because of a residual flexion contracture.
• who had a flexion contracture of the knee or who could not flex the hip to 90° even after THR were excluded because participants could not adopt the posture required for the particular radiographs and CT scans.

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
stem anteversion	Radiological measurement of femoral stem version	a hip lateral radiograph and CT scan were taken to measure stem anteversion

Primary Outcome Measures

Name	Time	Method
stem anteversion of the hip radiograph(decubitus lateral view)	postoperative 4days
stem anteversion of the CT scan	postoperative 4days

Secondary Outcome Measures

Name	Time	Method
The correlation between stem anteversion of the decubitus lateral view and stem version of the CT scan	postoperative 4days	to determine ICC(intraclass coefficient, correlation coefficient)

Trial Locations

Locations (1)

Seoul national University Bundang Hospital; 🇰🇷 Seongnam-Si, Gyeounggi-do, Korea, Republic of