The Relationship Between Operative and Radiologic Stem Version

The Relationship Between Operative and Radiologic Stem Version : Which Factors Influence Resultant Stem Version in Primary Total Hip Arthroplasty

Investigators prospectively evaluate the accuracy of intraoperative stem anteversion in 40consecutive total hip arthroplasties.

Study Overview

• Status: Completed
• Conditions: Arthroplasty Total Hip Replacement
• Intervention / Treatment: Radiation: The Relationship Between Operative and Radiologic Stem Version

Detailed Description

In all hips, investigators measure femoral stem anteversion postoperatively with three-dimensional computed tomography reconstruction of the femur, using both the distal femoral epicondyles and the posterior femoral condyles to determine the femoral diaphyseal plane. And investigators compare the surgeon's estimate of intraoperative stem version and stem version of CT scan.

• Study Type: Observational
• Enrollment (Actual): 40

Contacts and Locations

Study Locations

• Korea, Republic of
  • Gyeounggi-do
    • Seongnam-Si, Gyeounggi-do, Korea, Republic of, 463-707
      • Seoul National University Bundang Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult; Older Adult
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Between October 2015 and December 2015, 40 consecutive patients who underwent primary cementless total hip arthroplasty agreed to undergo a postoperative computed tomography scan.

Description

Inclusion Criteria:

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

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.

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
stem anteversion; intraoperative surgeon's estimation and postopertive CT sacn were taken to measure stem anteversion	Radiation: The Relationship Between Operative and Radiologic Stem Version; intraopertive surgeon's estimation and postoperative CT scan

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Intraopertive surgeon's estimation and postoperative CT scan were taken to measure stem anteversion	postoperative 4days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The correlation between stem anteversion of intraopertive surgeon's estimation and stem version postoperative CT scan	to determine ICC(intraclass coefficient, correlation coefficient)	postoperative 4days

Collaborators and Investigators

• Sponsor: Seoul National University Bundang Hospital
• Investigators: Principal Investigator: Kyung-Hoi Koo, professor, Director, Head of Orthopaedics, Seoul National university Bundang Hospital

Study record dates

Study Major Dates

• Study Start: October 1, 2015
• Primary Completion (Actual): March 1, 2016
• Study Completion (Actual): March 1, 2016

Study Registration Dates

• First Submitted: September 15, 2015
• First Submitted That Met QC Criteria: September 15, 2015
• First Posted (Estimate): September 17, 2015

Study Record Updates

• Last Update Posted (Estimate): March 29, 2016
• Last Update Submitted That Met QC Criteria: March 28, 2016
• Last Verified: March 1, 2016

More Information

Terms related to this study

• Other Study ID Numbers: Ante-002