- Hip Resurfacing Devices Medical Studies
- One-component revision of failed hip resurfacing Study by Dr. Pritchett 2014
- Hip Resurfacing Using Highly Cross-linked Polyethylene Study 2016
- Outcomes of the Birmingham Hip Resurfacing System Study 2016
- Long-term Outcome of a Metal-on-Polyethylene Cementless Hip Resurfacing Study 2014
- Polymotion Hip Resurfacing Device by Mr. McMinn 2015
- Conserve Plus 3-5 Year Outcome Study 2015
- Global Study on Hip Resurfacing Implants 2015 – 2021
- Hip Resurfacing and Conventional THR Comparison of Acetabular Bone Stock Removal, Leg Length, and Offset Medical Study 2013
- Metal-on-Metal Hip Resurfacing: The Effect of Component Position
- 10 year survival of double heat-treated resurfacings McMinn Center
- Hip Resurfacing With the Biomet 7-Year Results 2012 by Dr. Gross
- Larger cups and optimal positioning produced lowest ion levels by David Langton
- Incidence of Adverse Wear Reactions in Hip Resurfacing Study by Dr. Gross 2012
- Bone density of the femoral neck following BHR Study
- Mid-term Results of
By Pritchett JW
In this prospective study, 190 hip resurfacing procedures (164 participants) were performed using a cobalt-chromium femoral component and a cementless acetabular cup with a 3.8-mm highly cross-linked polyethylene acetabular liner…
…The mean follow-up was 8.5 (range, 7-10) years…
…(With Highly Cross-linked Polyethylene device) The low incidence of osteolysis and the low rate of wear found on retrievals suggest that many years of use in highly active patients is possible.… Read the rest
…it may be beneficial to investigate the long-term outcome of hip resurfacings using metal-on-polyethylene in the 1980’s. We report the long-term survivorship and modes of failure of a cementless metal-on-polyethylene resurfacing.
Ongoing developments using the lessons learned from these previous generation components and utilizing modern low wear materials, e.g., cross-linked polyethylene, may lead to improved implants for future hip resurfacings.
The Polymotion Hip Resurfacing device is an allergy-free device that uses a 3mm-thick cup made with a material known as cross-linked polyethylene, one of the toughest plastics in existence.
Traditional metal-on-metal hip resurfacing uses cobalt chromium alloy, explains Mr Derek McMinn, a consultant orthopaedic surgeon at BMI Edgbaston Hospital in Birmingham, who developed the new procedure.
‘Metal reactions vary in severity, but in the worst cases can lead to necrosis [death] of surrounding hip muscle and permanent disability for the patient,’ he said.
Another benefit of the capping procedure is that less bone is removed, in contrast to total hip replacements when the femoral head (ball joint of the hip) is replaced by a stemmed device and very little of the upper leg bone is retained.
Replacement hip joints can also wear out in more active patients.
During the two-hour resurfacing procedure, the ball and socket … Read the rest
|Link http://proceedings.jbjs.org.uk/cgi/content/abstract/88-B/SUPP_III/4322006D.H. Williams; U. Masood; and M.N. Norton Royal Cornwall Hospital, Truro, Cornwall TR1 3LJ, UK.|
Decreased head-neck ratio diameter and component malposition in total hip arthroplasty are factors known to result in impingement, increased rates of dislocation, wear and failure. In addition to these complications, impingement of the femoral neck on the acetabular component of a hip resurfacing may result in femoral neck fracture and loosening of the acetabular component. Little is known regarding the optimum femoral and acetabular hip resurfacing component position to avoid impingement.
In the first part of this study we analyzed the radiographic component position of 131 consecutive hip resurfacings. In the second part the effect of three component variables on the range of motion to impingement were analyzed using a dry bone model:
The mean femoral-stem shaft angle
Joseph Daniel, Director of Research at the McMinn Center in Birmingham UK, talks about the 10 year survival of double heat-treated resurfacings from 1996 and the effect that these heat treatments had on this series of hip resurfacings.
Hip Resurfacing With the Biomet Hybrid ReCap-Magnum System: 7-Year Results by Dr. Gross & Fei Liu 2012
|Gross TP, Liu F. – Midlands Orthopaedics, P.A., Columbia, SC.Abstract The purpose of this study was to report our clinical outcome of a large series of metal-on-metal hip resurfacing arthroplasty (HRA) using the hybrid Biomet ReCap-Magnum system. This is a single-designer surgeon series with an average of 5 ± 1 years. Seven hundred forty consecutive hybrid HRAs were performed in 653 patients. Kaplan-Meier survivorship with any revision as an end point was 96.4% at 7 years. Twenty-five (3.4%) cases were revised: 8 due to acetabular component loosening, 6 due to femoral neck facture, 4 due to failure of femoral component fixation, 2 due to deep infection, 2 due to adverse wear, 1 due to psoas tendonitis, 1 due to recurrent dislocation, and 1 due to unexplained pain. Biomet ReCap and Magnum HRA|