Comparing two surgical approaches for hip replacement surgery
Official title: Direct Superior Approach Versus PosteroLateral Approach in Total Hip Arthroplasty: a Multicenter Double Blinded Randomized Controlled Trial
Run by Isala · NCT06342843 · Data updated 2026-11-12
This study is testing which of two surgical methods for hip replacement helps people with severe hip arthritis feel better and recover faster.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 99 Years |
| Sex | All |
| Enrollment | 211 (estimated) |
| Sponsor | Isala Academic / other |
| Locations | 3 sites (Breda, North Brabant and 2 other locations) |
| Status | Recruiting |
| Started | March 26, 2024 |
| Main results expected | August 30, 2027 |
| Study ends | December 31, 2027 |
| Registry record updated | August 3, 2025 |
| Trial ID | NCT06342843 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older with symptomatic incapacitating hip osteoarthritis who are indicated for total hip arthroplasty.
✕Probably not a fit
Patients with previous hip surgery, severe obesity, or certain neurological and cognitive impairments may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study compares the direct superior approach (DSA) and the posterolateral approach (PLA) in total hip arthroplasty (THA) for patients with incapacitating hip osteoarthritis. It aims to evaluate postoperative pain, health-related quality of life (HRQoL), physical function, and muscle atrophy, among other factors. The study employs a multicenter, double-blinded, randomized controlled design, ensuring that neither patients nor researchers know which surgical method is used until one year post-surgery. A total of 211 participants will be enrolled to assess the effectiveness of each approach.
Why it matters
Potential benefit: If successful, this study could lead to improved surgical outcomes and quality of life for patients undergoing hip replacement surgery.
How similar studies have gone: Previous studies have shown varying success with different surgical approaches in hip arthroplasty, but this specific comparison is novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: Subject * Has symptomatic incapacitating coxarthrosis in whom total hip arthroplasty (THA) is indicated, diagnosed by both physical examination and pelvic/hip X-ray * Has signed informed consent * Is ageing 18 years or older at time of study entry * Is competent and able to participate in follow-up Exclusion Criteria: * Previous ipsilateral hip surgery * BMI \>35 kg/m2 * Contralateral incapacitating coxarthrosis, diagnosed by both physical examination and pelvic/hip X-ray * Neurological conditions influencing walking pattern * Inability to walk without walking aid preoperatively * Rheumatoid arthritis (RA) * Severe hip dysplasia * Cognitive impairment * Malignancies or metastases involving the hip joint or the nearby soft tissues * Inability to speak and write Dutch language
Where it's running
-
Amphia
Breda, North Brabant, Netherlands Recruiting -
Isala
Zwolle, Overijssel, Netherlands Recruiting -
Medisch Centrum Leeuwarden
Leeuwarden, Provincie Friesland, Netherlands Recruiting
Study contacts
- Principal investigator: Harmen B. Ettema, MD/PhD — Isala
- Study coordinator: Harmen Ettema, MD/PhD
- Email: h.b.ettema@isala.nl
- Phone: 0031886245656
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.