Selecting the Right Hip Prosthesis for Young Patients

NCT ID: NCT03279276

Last Updated: 2022-04-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-06-01

Study Completion Date

2029-12-31

Brief Summary

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There have been no previously published clinical randomized studies comparing Primoris®, short stem, hip prosthesis with standard uncemented hip arthroplasty in relation to bone density and function development. This is the subject for this study.

Detailed Description

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The overall purpose of this study is to show whether the Primoris® hip prosthesis results in a smaller loss of bone density than standard hip prosthesis, which in the longer term may result in an improved survival of prosthesis No. 2 after revision / replacement of a Primoris® hip prosthesis.

The primary outcome is periprosthetic bone quality in Primoris® hip prosthesis compared to standard hip prosthesis measured by DXA scanning.

The secondary outcomes are to assess:

1. The hip function measured by gait analysis.
2. Hip strength at pressure gauge.
3. Prosthetic migration / migration measured by radio-stereometric analysis (RSA).
4. Patient satisfaction measured by PROMs.

Conditions

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Osteoarthritis, Hip

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Randomized controlled trial
Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Primoris

Total hip arthroplasty surgery using a Primoris® femur component, Exceed ® acetabular cup + E-poly liner ®.

Group Type EXPERIMENTAL

Total Hip Arthroplasty

Intervention Type PROCEDURE

The usual procedures of the department: Moore incision and insertion of uncemented joints (exceed with vitamin E enriched polyethylene liner and 32 or 36 mm head). Cyclokaprone is administered peroperatively (bleeding-reducing), antibiotics and thrombosis prophylaxis. Follow the usual rehabilitation regimes, fast track, incl. Use of crutches and must support within the pain limit, possibly with crutches the first 4 weeks after surgery, then full load.

By default, postoperative X-ray and RSA recordings will be performed on the 1st or 2nd postoperative day. The surgery will be performed by specialist physicians in orthopedic surgery associated with the hip arthroplasty sector.

Echo

Total hip arthroplasty surgery using a standard uncemented Echo® femur component, Exceed ® acetabular cup + E-poly liner ®.

Group Type ACTIVE_COMPARATOR

Total Hip Arthroplasty

Intervention Type PROCEDURE

The usual procedures of the department: Moore incision and insertion of uncemented joints (exceed with vitamin E enriched polyethylene liner and 32 or 36 mm head). Cyclokaprone is administered peroperatively (bleeding-reducing), antibiotics and thrombosis prophylaxis. Follow the usual rehabilitation regimes, fast track, incl. Use of crutches and must support within the pain limit, possibly with crutches the first 4 weeks after surgery, then full load.

By default, postoperative X-ray and RSA recordings will be performed on the 1st or 2nd postoperative day. The surgery will be performed by specialist physicians in orthopedic surgery associated with the hip arthroplasty sector.

Interventions

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Total Hip Arthroplasty

The usual procedures of the department: Moore incision and insertion of uncemented joints (exceed with vitamin E enriched polyethylene liner and 32 or 36 mm head). Cyclokaprone is administered peroperatively (bleeding-reducing), antibiotics and thrombosis prophylaxis. Follow the usual rehabilitation regimes, fast track, incl. Use of crutches and must support within the pain limit, possibly with crutches the first 4 weeks after surgery, then full load.

By default, postoperative X-ray and RSA recordings will be performed on the 1st or 2nd postoperative day. The surgery will be performed by specialist physicians in orthopedic surgery associated with the hip arthroplasty sector.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

Women ≤ 45 years or men ≤ 55 years with hip osteoarthritis, suitable for hip prosthesis.

Patients who wish to participate in the project and give written consent after oral and written information.

Exclusion Criteria

1. Patients with previous bone disease, metabolic disease, including diabetes, or the use of drugs that affect bone density.
2. Smoking more than 20 cigarettes daily
3. Patients with fracture in the femur or acetabulum.
4. Patients who do not understand the given patient information
5. Competing disorder requiring treatment with antiinflammatory drugs (NSAIDs, steroid, cytostatics).
6. Estimated residual life \<10 years
7. Rheumatoid arthritis or other arthritis (eg psoriasis arthritis).
8. Previous surgery on the relevant hip joint.
9. Co-Morbidity (ASA Group 3-5).
10. Neurological disorder that compromises motor skills and rehabilitation.
11. Pregnancy.
12. Osteoarthritis secondary to mb. Calvé-Legg-Perthes / Avascular Caput Necrosis, Epiphysiolysis Capitis Femoris and Multiple Epiphysic Dysplasia.
13. Acetabular dysplasia with secondary subluxation (Crowe grade II to IV).
14. Previously detected osteoporosis or osteoporosis detected by current DXA scanning.
15. Ongoing treatment with osteoporosis medicine (bisphosphonates, estrogen receptor modulators and parathyroid hormone, etc.).
16. Aseptic caput necrosis (posttraumatic, idiopathic).
17. Varus or valgus deformity in proximal femur (collum angle \<125 ° or\> 145 °.)
18. Collum femoris assessed too retro- or anteverted.
Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Northern Orthopaedic Division, Denmark

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Mogens Laursen, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Northern ODD

Locations

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Northern Orthopaedic Division, Clinic Farsø, Aalborg University Hospital

Farsø, Northern Jutland, Denmark

Site Status

Countries

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Denmark

Other Identifiers

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N-20170030

Identifier Type: -

Identifier Source: org_study_id

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