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Comparing Collared and Collarless Femoral Stems in Hip Replacement Surgery

This study is comparing two types of implants used in total hip replacement surgery (Primary Total Hip Arthroplasty): a "collared" femoral stem and a "collarless" femoral stem. Researchers want to see if one type of implant works better than the other. You could be eligible if you are an adult (18-99 years old) scheduled for a primary, uncemented total hip replacement due to osteoarthritis or other non-inflammatory joint disease. The main goal is to measure how much the implant moves (subsidence) at 6 weeks, 6 months, and 1 year after your surgery. The current recruitment status is unclear.

Study design
This is a randomized controlled trial, meaning participants will be randomly assigned to receive either a collared or collarless femoral stem. The study plans to enroll 100 participants.
What's involved
You would receive either a collarless or collared femoral stem during your hip replacement surgery. Your progress will be checked at 6 weeks, 6 months, and 1 year after your operation.
Compensation
Not stated in the trial record.
Follow-up
Participants will be followed for 1 year after their surgery to measure femoral stem subsidence.

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NCT07337642

Comparing Collared and Collarless Femoral Stems in Primary Total Hip Arthroplasty

Recruiting
NAAges 18–99InterventionalTreatment
Medstar Health Research Institute
~100 participants
Updated 2026-01-13 on ClinicalTrials.gov
What's tested:Collarless Femoral StemCollared Femoral Stem

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Measurement of femoral stem subsidence at 6 weeks, 6 months, and 1-year post-operation
Measured over 6 weeks, 6 months, and 1 year post operation

Conditions

Primary Total Hip Arthroplasty

Explore related trials

Osteoarthritis

Where it's being run

1 sites across 1 states
District of Columbia1

Who to contact

Miles Hollimon, B.S.
[email protected]
(202) 444-8766
Email the study team

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Do you actually qualify for this trial?

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Eligibility criteria

Inclusion

Adults (≥ 18 years old) scheduled for primary, uncemented THA using a cementless femoral stem
Diagnosis of primary osteoarthritis or other non-inflammatory degenerative joint disease.
Ability and willingness to comply with study procedures and follow-up schedule.
Ability to provide written informed consent

Exclusion

Patients not indicated for a cementless THA
Prior surgery on the ipsilateral hip (e.g., prior THA, internal fixation, osteotomy)
Use of cemented or hybrid femoral components.
Revision THA or conversion THA
Active or prior infection of the hip joint.
Severe osteoporosis (T-score ≤ -2.5) or known metabolic bone disease.
Inability to complete follow-up or anticipated relocation out of the area.

What this trial measures

  • Measurement of femoral stem subsidence at 6 weeks, 6 months, and 1-year post-operation6 weeks, 6 months, and 1 year post operation

    Measurement of femoral stem subsidence at 6 weeks, 6 months, and 1-year post-operation used radiographic evidence.