Clinical trial Recruiting at 3 sites Interventional Ages 18 to 99

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 typeInterventional
Ages18 Years to 99 Years
SexAll
Enrollment211 (estimated)
SponsorIsala
Academic / other
Locations3 sites (Breda, North Brabant and 2 other locations)
StatusRecruiting
StartedMarch 26, 2024
Main results expectedAugust 30, 2027
Study endsDecember 31, 2027
Registry record updatedAugust 3, 2025
Trial IDNCT06342843 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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.