Diferences in 3D Gait Analysis After Various Types of Total Hip Arthroplasty (3DGAHIP)

Comparative 3D Gait Analysis: Impact of Total Hip Arthroplasty Stem Anchoring (Metadiaphyseal vs Metaphyseal)

Patients with hip osteoarthritis who were indicated for total hip arthroplasty were prospectively enrolled and randomized to receive either a short (metaphyseal) stem or a conventional (metadiaphyseal) stem hip arthroplasty. Three-dimensional gait analysis was performed regularly (preoperatively and at multiple postoperative time points) to determine whether conservative implants result in superior objective and patient-reported outcomes

Study Overview

• Status: Completed
• Conditions: Arthropathy of Hip
• Intervention / Treatment: Procedure: Conservative Total Hip Arthroplasty; Procedure: Conventional Total Hip Arthroplasty

• Study Type: Interventional
• Enrollment (Actual): 20
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Czechia
  • Ústí nad Labem Region
    • Ústí nad Labem, Ústí nad Labem Region, Czechia, 40113
      • Masaryk Hospital

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

• high-grade hip osteoarthritis

Exclusion Criteria:

• none

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Conservative (metaphyseal) stem hip arthroplasty; Hip arthroplasty is performed through a minimally invasive anterolateral hip approach. All replacements are completely non-cemented, articulations include polyethylene or ceramic inserts on ceramic heads. Cups are standardly fixed through press-fit principle, no additional pelvis screws were standardly used. Special curved femoral reamers are used in order to consume as little bone stock as possible (only the metaphysis) and provide a muscle-sparing approach.	Procedure: Conservative Total Hip Arthroplasty; Conservative (metaphyseal) stem Total Hip Arthroplasty
Active Comparator: Conventional (metadiaphyseal) stem hip arthroplasty; Hip arthroplasty is performed through a minimally invasive anterolateral hip approach. All replacements are completely non-cemented, articulations include polyethylene or ceramic inserts on ceramic heads. Cups are standardly fixed through press-fit principle, no additional pelvis screws were standardly used. Standard femoral preparation is performed with prosthesis taking bone stock from the metadiaphyseal area of proximal femur, however, gluteal insertions were preserved in simillar fashion as in metaphyseal implants.	Procedure: Conventional Total Hip Arthroplasty; Conventional (metadiaphyseal) stem Total Hip Arthroplasty

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
3D Gait analysis - Gait Profile Score	The Gait Profile Score (GPS) is a numerical index (range 0-10, the lesser the number, the better for the patient). The GPS comprises of the kinematic parameteres that are also called the Gait Variable Scores (hip flexion, rotation and abduction) and the spatiotemporal parameters (step time, step length and step cadence). All of these parameters are also mentioned ad separate outcome measures. The extraction of GPS from the 2 basic data groups was done automaticaly through specialised software which is based on the work of Baker et al. (Baker R, McGinley JL, Schwartz MH, et al. The gait profile score and movement analysis profile. Gait Posture. 2009;30(3):265-269. doi:10.1016/j.gaitpost.2009.05.020).	from preoperative to 1 year postoperative

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The Modified Harris Hip Score	Total range of the questionnaire is 0-100 points, more points=better patient reported outcome. 90-100 points = excellent result; 80-89 = good result; 70-79 = fair result; < 70 points = poor result.	from preoperative to 1 year postoperative

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Step Time	One of the measured spatiotemporal parameters assessing the duration of a step measured in seconds. The parameter does not have a physiological normative scale.	from preoperative to 1 year postoperative
Hip flexion	One of the kinematic gait parameters = Gait Variable Scores measured in degrees. Physiological range of hip flexion is 0 to 130 degrees, the higher the range, the better for the patient.	from preoperative to 1 year postoperative
Step length	One of the measured spatiotemporal parameters assessing the length of each step measured in meters. The parameter does not have a physiological normative scale.	From preoperative to 1 year postoperative
Step cadence	One of the measured spatiotemporal parameters assessing the number of steps in a minute. The parameter does not have a physiological normative scale.	from preoperative to 1 year postoperative
Hip external rotation	One of the kinematic gait parameters = Gait Variable Scores measured in degrees. Physiological range of hip eternal rotation is 0 to 60 degrees. The higher the range, the better for the patient.	from preoperative to 1 year postoperative
Hip abduction	One of the kinematic gait parameters = Gait Variable Scores measured in degrees. Physiological range of hip abduction is 0 to 45 degress. The higher the range, the better for the patient.	From preoperative to 1 year postoperative

Collaborators and Investigators

• Sponsor: Masarykova Nemocnice v Usti nad Labem, Krajska Zdravotni a.s.

Study record dates

Study Major Dates

• Study Start (Actual): September 30, 2024
• Primary Completion (Actual): January 30, 2025
• Study Completion (Actual): January 30, 2025

Study Registration Dates

• First Submitted: March 30, 2026
• First Submitted That Met QC Criteria: June 1, 2026
• First Posted (Actual): June 5, 2026

Study Record Updates

• Last Update Posted (Actual): June 5, 2026
• Last Update Submitted That Met QC Criteria: June 1, 2026
• Last Verified: June 1, 2026

More Information

Terms related to this study

• Other Study ID Numbers: 3DGAHIP

Plan for Individual participant data (IPD)

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

Drug and device information, study documents

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