Evaluate the Safety and Effectiveness of the Polymotion Hip Resurfacing (PHR) System Compared to Total Hip Arthroplasty (PHR)  – Read Full Study Information Here:   https://clinicaltrials.gov/study/NCT06792539?term=polymotion&rank=1

ClinicalTrials.gov ID NCT06792539

Sponsor JointMedica Inc.  Information provided by JointMedica Inc. (Responsible Party)

Last Update Posted 2025-02-26

Study Overview

Brief Summary

The goal of this clinical trial is to evaluate the safety and effectiveness of the Polymotion Hip Resurfacing (PHR) System compared to total hip arthroplasty, for adults who require hip resurfacing arthroplasty due to 1) non-inflammatory arthritis (degenerative joint disease) such as osteoarthritis, traumatic arthritis, or 2) mild dysplasia/developmental dislocation of the hip (DDH) up to Crowe Grade 1.

Detailed Description

The PHR® System is a single-use device consisting of a Cobalt Chromium, bone-cemented femoral head component, and a cementless acetabular component comprising of a Vitamin E polyethylene (Vit E-XPE) bearing with a titanium coating.

The PHR® System is intended for patients who, due to their relatively younger age (under 65) and increased activity level, may not be suitable for traditional total hip arthroplasty due to an increased possibility of requiring future ipsilateral hip joint revision.

Hip Resurfacing Arthroplasty (HRA) is a surgery that has been developed as an alternative to Total Hip Arthroplasty (THA), especially for younger, more active patients. Studies done on past designs of HRA demonstrate the following noteworthy benefits of the HRA procedure when compared with THA: bone conservation, improved gait, higher activity levels, lower rates of dislocations, reduced thigh pain, and reduced alteration in leg length. Hip resurfacing restores the natural shape of the joint meaning better stability, longevity, and higher levels of activity than a traditional hip replacement.

In Total Hip Replacement, the femoral head and neck (ball joint of the hip) is removed and replaced by a long, stemmed device. The procedure is highly successful; however, in some cases the replacement hip joint has the potential to wear out much more quickly in younger, more active patients, leading to revision surgery being required. With the PHR® procedure, your surgeon removes less bone from the femoral head of the femur and retains the femoral neck. The femoral head is shaped to accept a low-wear metal cap. This spherical cap closely matches your anatomy, reducing the risk of dislocation, and offering a broad range of movement and excellent stability. The acetabular socket (cup joint of the hip) is then fitted with a corresponding polyethylene component, significantly reducing potential reactions to metal ions associated with historic Metal-on-Metal hip resurfacing devices.

A comprehensive range of sizes is offered to address the needs of most patients. Both components are designed to be implanted, to achieve reconstructive and functional replacement of the hip joint. The PHR® System is intended to offer the traditional benefits of hip resurfacing over total hip arthroplasties, such as bone conservation and restoration of natural biomechanics, without a metal-on-metal articulating surface.

Official Title

A Multi-Center, Prospective, Non-Randomized, Pivotal Trial Evaluating the Safety and Effectiveness of the Polymotion Hip Resurfacing System

Conditions:  Osteoarthritis of the Hip,  Degenerative Joint Disease of Hip    Dysplasia; Hip

Intervention/Treatment      Device: Polymotion Hip Resurfacing (PHR) System

Study Start (Actual)  2025-01-22      Study Completion (Estimated)  2028-01

Enrollment (Estimated) 238

 

Contacts and Locations

Study Contact

Name: Steve Meakins Vice President, Quality and Regulatory Affairs

Phone Number: 01905 640008

Email: steve@jointmedica.com

Study Contact Backup

Name: Sharat Kusuma, MD

Email: Sharat@jointmedica.com

 

This Study has 8 locations

1 – Florida Locations

Tampa, Florida, United States, 33613

Recruiting

Florida Medical Clinic Orlando Health

Contact: Eric Border

813-979-0440  eric.border@orlandohealth.com

Principal Investigator: Stephen Raterman, MD

2 – Illinois Locations

Chicago, Illinois, United States, 60612

Not yet recruiting

Rush University Medical Center

Contact: Anne DeBenedetti

312-432-2468   Anne.DeBenedetti@rushortho.com

Principal Investigator: Craig Della Valle, MD

3 –  Maryland Locations

Baltimore, Maryland, United States, 21215

Not yet recruiting

Sinai Hospital / LifeBridge Health

Contact: Taj-Jamal Andrews

443-506-3022   tandrews@lifebridgehealth.org

Principal Investigator: Michael Mont, MD

Sub-Investigator:  Ronald Ronald, MD

4  New York Locations

Not yet recruiting

NYU Longone

Contact: Daniel Waren

954-559-2251   Daniel.Waren@nyulangone.org

Principal Investigator: Ajit Deshmukh, MD

Sub-Investigator: William Macaulay, MD

Sub-Investigator: Scott Marwin, MD

Sub-Investigator: Matthew Hepinstall, MD

5  Ohio Locations

New Albany, Ohio, United States, 43054

Not yet recruiting

Joint Implant Surgeons

Contact: Michael Sneller

614-964-0348    snellerma@jisortho.com

Principal Investigator: David Crawford, MD

6  South Carolina Locations

Recruiting

Midlands Orthopaedics & Neurosurgery

Contact: Dani Gailard Campbell

864-561-5142   dani.gaillard@midorthoneuro.com

Principal Investigator: Thomas Gross, MD

Sub-Investigator: Coleman Fowble, MD

7  Virginia Locations

Newport News, Virginia, United States, 23606

Not yet recruiting

Hampton Road Orthopaedics

Contact: Anthony Carter, MD

757-871-8132   orthoace34@gmail.com

Principal Investigator: Anthony Carter, MD

8 Bermuda

Paget, Trevelyan, Bermuda, DV04

Recruiting

Orthopaedic and Physiotherapy Associates

Contact: William Peckett, MBBS, FRCS

+1-441-333-5123   WillPeckett@opa.bm

Principal Investigator: William Peckett, MBBS, FRCS

Sub-Investigator: Ronan Treacy, FRCS

 

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person’s general health condition or prior treatments.

Eligibility Criteria

In order to be eligible to participate in this study, subjects must meet all of the following criteria:

1. Requires primary hip resurfacing arthroplasty due to:
   1. non-inflammatory arthritis (degenerative joint disease) such as osteoarthritis, traumatic arthritis, or
   2. mild dysplasia/developmental dislocation of the hip (DDH) up to Crowe Grade 1.
2. Harris Hip Score < 70 points.
3. Skeletally mature, age ≥21 and <65 years.
4. Physically and mentally able and willing to comply with the Protocol, including the ability to read and complete required forms and willing and able to adhere to the scheduled follow-up visits and requirements of the Protocol.

Subjects who meet any of the following criteria will be excluded from participating in this study:

1. Inadequate bone stock or bone quality to support the device based on a Canal-Bone Ratio (CBR-7) of >0.45.0F
2. Severe osteopenia, a medical history or increased risk of severe osteoporosis or severe osteopenia, a history of fragility fracture, and other conditions that lead to increased bone resorption
3. Osteonecrosis or avascular necrosis (AVN)
4. Multiple cysts of the femoral head (> 1cm) or cysts crossing the head-neck junction
5. Metabolic disorders which may impair bone formation (e.g., osteomalacia, osteogenesis imperfecta, parathyroid disease, rickets, etc.)
6. Severe femoral head deformities that will prevent fixation of the prosthetic resurfacing femoral head
7. Inflammatory arthritis such as rheumatoid arthritis (RA)
8. Severe proximal femoral rotational deformity in whom appropriate combined anteversion of femoral-acetabular construct is unachievable
9. Severe acetabular dysplasia/development dislocation of the hip, defined as Crowe Grade ≥ 2
10. Previous surgical intervention on index hip (e.g., treatment of hip fracture, arthroscopy)
11. Severe medical comorbidities, including:
    1. severe cardiopulmonary disease,
    2. congestive heart failure,
    3. severe liver or kidney dysfunction,
    4. end-stage renal disease,
    5. severe uncontrolled diabetes,
    6. history of IV drug use,
    7. history of hypercoagulable state or pulmonary embolism,
    8. severe lumbar spinal stenosis,
    9. vascular insufficiency, muscular atrophy, or neuromuscular disease severe enough to compromise implant stability or post-operative recovery,
    10. neuropathic arthropathy (Charcot joint),
    11. immunosuppression or other immunodeficiency disorders, e.g., diseases such as Acquired Immune Deficiency Syndrome (AIDS) or post-organ transplant and on high doses of corticosteroids.
12. Incompetent or deficient soft tissue surrounding the joint (e.g., hip abductor muscle deficiency)
13. BMI > 40
14. Active or suspected infection in or around the hip joint
15. Known or suspected metal sensitivity (e.g., jewelry) or allergy to any implant materials
16. Pregnant or plan to become pregnant during the study duration
17. Current smoker

 

Ages Eligible for Study

21 Years to 65 Years (Adult,  Older Adult )

Sexes Eligible for Study

All

Accepts Healthy Volunteers

No

Study Plan

 

This section provides details of the study plan, including how the study is designed and what the study is measuring.

 

Design Details

Primary Purpose : Treatment

Allocation : N/A

Interventional Model : Single Group Assignment

Interventional Model Description: A multicenter, prospective, non-randomized, propensity score-adjusted, pivotal study

Masking : None (Open Label)

Participant Group/Arm

Experimental: Polymotion Hip Resurfacing (PHR) System

The investigational device, Polymotion Hip Resurfacing System (“Polymotion” or “PHR”), is a metal-onpolyethylene hip resurfacing device consisting of a metallic femoral component and an acetabular component made of Vitamin E HXLPE with a titanium coating on its bone-contacting surface.

Both components are designed to be permanently implanted, to achieve reconstructive and functional replacement of the hip joint. The PHR System is intended to offer the traditional benefits of hip resurfacing over total hip arthroplasty, such as bone conservation and restoration of natural biomechanics, without a metal-on-metal articulating surface.