Accuracy of the Naviswiss™ navigation system for total hip replacement

Not Applicable

Completed

• Conditions: Hip Osteoarthritis; Hip Rheumatoid Arthritis; Osteonecrosis of the Femoral Head; Musculoskeletal - Osteoarthritis; Musculoskeletal - Other muscular and skeletal disorders; Surgery - Surgical techniques

• Registration Number: ACTRN12620000873921
• Lead Sponsor: David Liu

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2020-09-02
• Study Completion: 2022-06-15
• Last Update Posted: 16 January 2023

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 33

Inclusion Criteria

Patients eligible for primary elective THA using an anterolateral approach in the lateral decubitus position

Exclusion Criteria

Patients who have declined or revoked consent for use of clinical data for research, or are unable to provide informed consent.

Patients eligible for insertion of a short-stem component

Patients requiring/electing to have simultaneous bilateral procedures

Patients with severe contralateral hip deformity or dysplasia

Patients with previous ipsilateral hip arthroplasty eligible for revision

Patients who are lost to follow-up

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Validity of Naviswiss™ measurements of acetabular cup inclination (the angle between the acetabular and longitudinal axes when projected onto the coronal plane).<br>Assessed by comparing standard error of measurement between intraoperative Naviswiss™ and CT-based measurements of inclination.<br>[following postoperative review (by ~6 weeks postop)];Validity of Naviswiss™ measurements of acetabular cup anteversion (the angle between the acetabular axis and coronal plane).<br>Assessed by comparing standard error of measurement between intraoperative Naviswiss™ and CT-based measurements of anteversion.<br>[following postoperative review (by ~6 weeks postop)];Validity of Naviswiss™ measurements of change in femoral offset (pre-post surgery). <br>Assessed by comparing standard error of measurement between intraoperative Naviswiss™ and CT-based measurements of femoral offset.[following postoperative review (by ~6 weeks postop)]

Secondary Outcome Measures

Name	Time	Method
Validity of Naviswiss™ measurements of change in leg length pre-post implant.<br>Assessed by comparing standard error of measurement between intraoperative Naviswiss™ and CT-based measurements of leg length.[following postoperative review (by ~6 weeks postop)]