Comparing Collared and Collarless Femoral Stems in Primary Total Hip Arthroplasty (NCT07337642)
🩺 Plain-English Summary (8th-Grade Level)
This is a prospective randomized control trial comparing two collared and collarless femoral implants used in primary total hip arthroplasty. The specific aims of this trial are to: SA1: Prospectively assess clinical outcomes in patients undergoing primary total hip arthroplasty with a collared versus collarless femoral stem of the same design. SA2: Evaluate serial radiographs to quantify differences in subsidence between collared and collarless implant groups. SA3: Report and compare incidence rates of intraoperative and postoperative periprosthetic fractures and aseptic loosening following primary total hip arthroplasty with use of either a collared or collarless stem. Hypothesis: The addition of a collar to the same designed triple-taper primary hip stem will lead to a reduction in subsidence and incidence of perioperative and periprosthetic femur fractures.
Who can join: To join this study, participants generally need to meet the listed inclusion criteria (4 items) and avoid the listed exclusions (8 items).
Location: MedStar Georgetown University Hospital — Washington D.C., District of Columbia
📋 "Do I Qualify?" — 1-Minute Self Screener
Instant ChecklistCheck every box below. If you can check all of them, you may meet the study's basic screening requirements (final eligibility is confirmed by the site team).
Usually NOT eligible if any of the following apply:
- Exclusion Criteria:
- 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.
🔍 Extracted verbatim from the official NIH eligibility criteria. Always confirm with the study coordinator.
📍 All Participating Trial Locations (1 Sites)
- MedStar Georgetown University Hospital — Washington D.C., District of Columbia
💰 Cost, Insurance & Patient Rights
- 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
- Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
- Voluntary Participation: You may withdraw at any time without affecting your standard medical care.