Intraoperative Measurement Technique (THR)

Intraoperative Measurement Technique for Improved Accuracy of Femoral Offset and Leg Length in Total Hip Replacement: A Retrospective Cohort Study

This retrospective cohort study included 50 consecutive patients who underwent THR. All surgeries were performed by the same orthopedic surgeon, using posterior approach. In all patients, the same technique of intraoperative measurement of the femoral offset and limb length was used, entailed calculation of the distances between reference points on the ischium, greater trochanter, and the screwdriver. Measurements were collected from radiographic imaging data and surgical reports.

Study Overview

• Status: Completed
• Conditions: Limb Length Discrepancy; Total Hip
• Intervention / Treatment: Procedure: entailed calculation of the distances between reference points on the ischium, greater trochanter, and the screwdriver. Measurements were collected from radiographic i

Detailed Description

Introduction: Restoration of limb length equality and femoral offset is critical for the success of THR. The purpose of this study was to investigate the efficacy of a novel intraoperative measurement technique in minimizing errors in leg length and offset in total hip replacement (THR).

Methods: This retrospective cohort study included 50 consecutive patients who underwent THR. All surgeries were performed by the same orthopedic surgeon, using posterior approach. In all patients, the same technique of intraoperative measurement of the femoral offset and limb length was used, entailed calculation of the distances between reference points on the ischium, greater trochanter, and the screwdriver. Measurements were collected from radiographic imaging data and surgical reports.

• Study Type: Observational
• Enrollment (Actual): 50

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

50 consecutive patients who were admitted to the orthopedic department for elective THR

Description

Inclusion Criteria:

* patients that underwent THR due to primary osteoarthritis of the hip joint.

Exclusion Criteria:

• Patients who underwent THR for any other reasons
• patients that underwent revision surgery

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
outcome	calculation of the distances between reference points on the ischium, greater trochanter, and the screwdriver	1 year

Collaborators and Investigators

• Sponsor: Ziv Medical Center

Study record dates

Study Major Dates

• Study Start (Actual): March 23, 2015
• Primary Completion (Actual): March 20, 2017
• Study Completion (Actual): June 20, 2017

Study Registration Dates

• First Submitted: November 28, 2023
• First Submitted That Met QC Criteria: December 7, 2023
• First Posted (Estimated): December 15, 2023

Study Record Updates

• Last Update Posted (Estimated): December 15, 2023
• Last Update Submitted That Met QC Criteria: December 7, 2023
• Last Verified: December 1, 2023

More Information

Terms related to this study

• Keywords: total hip replacement; limb length discrepancy
• Other Study ID Numbers: ZivMC; 0025-15-ziv (Registry Identifier: ZivMC)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: no sharing

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No