RSA Study of Furlong Evolution With and Without Collar
Key facts
- Who runs it
- Region Skane
- Where
- Sweden1 site in 1 countryChoose a country to see its sites
- Trial code
- Status
- Completed
- People taking part
- 50 people enrolled
- Started
- Oct 2012
- Ended
- Mar 2025
- Type of study
- Interventional, 2 groupsOne group gets an existing treatment, for comparison.
- Treatments tested
- Stem collar
- Record updated
- 24 June 2025
Who can take part
- Age
- 40 years to 80 years
- Sex
- Women and men
- Healthy volunteers
- Cannot take part
The registry criteria, word for word
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Who can take part
- Primary osteoarthritis of the hip necessitating primary hip replacement
- A femur considered suitable for uncemented fixation of the stem
- Biological age <75 years old at the inclusion time of the study
Who cannot take part
- Ongoing corticosteroid (oral) or immunosuppressive medication
- Malignant disease
- Personal disorders (dementia, alcohol or drug abuse etc) suspected of making completion of the trial uncertain
- Rheumatoid arthritis
- Severe osteoporosis
- Earlier fracture or operation in the hip to be operated on
- Peroperative fracture
This trial has no sites in United States.
It has sites in one country. Choose a country to see its sites.
About the trial
What the trial wants to find out
The aim of this study is to further investigate the clinical and radiological importance of design changes in cementless hip prosthesis. The investigators have earlier evaluated the classical Furlong HAC total hip prosthesis and a first design change Furlong Active. Now a further development, Furlong Evolution, is to be evaluated. This prosthesis, furthermore, comes with and without a collar, and the investigators are going to randomize between the two. The investigators hypothesize that the new design will be easier to implant and will present equal or less migration than the older designs which would imply a favourable outcome in the long term. The investigators further hypothesize that the collar play no major part for the long term migration and bone remodelling.
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We will now do a 10 year follow up of the patients including RSA, DXA and PROMS
The 2 groups in the trial
- Stem collarNo study treatment, for comparison
The stem has two versions, one with and one without a collar. This arm will have stems with a collar. The classical Furlong HAC had a collar.
- No Stem collarExisting treatment, for comparison
The stem has two versions, one with and one without a collar. This arm will have stems without a collar. The classical Furlong HAC had a collar.
Treatment: Stem collar
Data and sources
- Registry record
- Listed on ClinicalTrials.gov.
- Official title
- Evaluation of the Furlong Evolution Uncemented Hip Prosthesis With Special Emphasize on the Use of Collared Design or Not. A Prospective, Randomized Study Evaluated by RadioStereometric Analysis (RSA) and DXA.
- Record updated
- 24 June 2025