Scientific Publications

Magnum metal-on-metal uncemented total hip replacement: 8- to 18-year outcomes of 211 cases

Degenerative gluteal tears associated with hip arthroplasty

Long‑term clinical outcomes of the Biomet M2a‑38: a retrospective review of 335 total hip arthroplasty cases

Our 20‑year implant survivorship of 97.6% with the M2a‑38 bearing surpassed registry benchmarksfor THA. This large‑bearing (38 mm), full hemisphere coverage metal‑on‑metal system had no bearing wear failures,one failure of instability, one failure of fixation, and three trunnion failures, perhaps suggesting an optimum balancebetween stability of the joint and the trunnion. Jones, C.S., Gaillard-Campbell, D. & Gross, T.P. Long-term clinical outcomes of the Biomet M2a-38: a retrospective review of 335 total hip arthroplasty cases. J Orthop Surg Res 18, 721 (2023). https://doi.org/10.1186/s13018-023-04223-4

Hip Resurfacing – An Alternative To Total Hip Replacement

The primary advantages of hip resurfacing are stability, functionality, durability, and bone preservation. Over the past 15 years, technology has changed dramatically allowing surgeons to perform hip resurfacing with minimal blood loss and good pain control.

Hypersensitivity to Metals in Metal-on-Metal Hip Arthroplasty: A Prospective Study of 135 Lymphocyte Transformation Tests

Preliminary 2021

Hip resurfacing: is female gender an absolute or relative contraindication?

Annals of Joint. 2020.

Hip resurfacing arthroplasty in young patients: international high-volume centres' report on the outcome of 11,382 metal-on-metal hip resurfacing arthroplasties in patients

Hip international. 2020

Hip resurfacing as an outpatient procedure: a comparison of overall cost and review of safety

Musculoskeletal Surgery. 2020

Femoral Fixation Methods in Hip Resurfacing Arthroplasty: An 11-Year Retrospective Comparison of 4013 Cases

JOA. 2019

Early Cup Shifts: A Previously Unrecognized Phenomenon in Hip Arthroplasty

Acta Scientific Orthopedics. 2019

Prevention of Metallosis in Hip Resurfacing: Confirmation of the RAIL Guideline in 2466 Cases

EC Ortho. 2019.

Reducing the risk of early femoral failure after metal-on-metal hip resurfacing arthroplasty

European Orthopaedics and Traumatology. 2014.

Metal-on-metal hip resurfacing in patients younger than 50 years: a retrospective analysis

Journal of Orthopaedic Surgery and Research. 2017

Hip resurfacing arthroplasty for end-stage arthritis caused by childhood hip disease

Hip International. 2019

Optimizing Acetabular Component Bone Ingrowth: The Wedge-Fit Bone Preparation Method

Advances in Orthopedics; 2019

We investigate the efficacy of a modified acetabular bone-preparation technique in reducing the incidence of two clinical problems (lack of bone ingrowth and cup shift) identified in hip resurfacing arthroplasty.

Acetabular Debonding: An Investigation of Porous Coating Delamination in Hip Resurfacing Arthroplasty

Advances in Orthopedics. 2018

Minimally invasive posterior approach for hip resurfacing

Tech Orthop. 2010.

A prospective analysis has demonstrated improved clinical results and no increased compli- cations when employing MIS techniques for HRA using a posterior approach. Key

Comparative study between patients with osteonecrosis and osteoarthritis after hip resurfacing arthroplasty

Acta Orthop Belg. 2012.

The purpose of this study was to compare the clinical outcomes of osteonecrosis (ON) and osteoarthritis (OA) patients after metal-on-metal hip resurfacing arthroplasty (HRA).

Interventions for Improving Hip resurfacing Outcomes in women: A high Volume Retrospective Study

Journal of Arthroplasty 2017.

Comparison of Cemented and Bone Ingrowth Fixation Methods in Hip Resurfacing for Osteonecrosis

The Journal of Arthroplasty. 2016

Background: The optimal surgical treatment for osteonecrosis of the femoral head has yet to be 20 elucidated. To evaluate the role of femoral fixation techniques in hip resurfacing, we present a 21 comparison of the results for two consecutive groups: Group 1 (75 hips) received hybrid hip 22 resurfacing implants with a cemented femoral component; Group 2 (103 hips) received 23 uncemented femoral components. Both groups received uncemented acetabular components. Conclusions: This study demonstrates a superior outcome for cases of osteonecrosis with 36 uncemented hip resurfacings compared to cases employing hybrid devices.

Reducing the failure rate of hip resurfacing in dysplasia patients: a retrospective analysis of 363 cases

BMC Musculoskeletal Disorders. 2016.

Background: Arthritis secondary to developmental hip dysplasia often mandates implant surgery at a relatively young age. Hip resurfacing arthroplasty (HRA), compared with standard stemmed total hip arthroplasty (THA), affords a more active lifestyle including extreme-motion activities but stimulates concerns pertaining to implant failure. Conclusions: We believe the interventions reported here, combined with sufficient surgeon experience and properly designed implants, afford patients with mild developmental dysplasia a more active lifestyle with favorable implant survival.

Outcomes After Revision Of Metal-on-metal Hip Resurfacing Arthroplasty

J Arthroplasty. 2012

We report the results of 58 hip resurfacing arthroplasties (HRA) revised by a single surgeon with an average of 5.2±2.6 years follow-up. The four most common causes for revision were acetabular component loosening, femoral neck fracture，femoral component loosening, and adverse wear related failure (AWRF). In 95% of cases (55/58), the revision bearing was a large metal-on-metal type including in all seven AWRF cases; three cases were revised to ceramic-onpolyethylene. There were two repeat revisions due to acetabular component loosening.

Incidence of adverse wear reactions in hip resurfacing arthroplasty: a single surgeon series of 2,600 cases

Hip International. 2013

A single surgeon performed 2,559 metal-on-metal hip resurfacing arthroplasties in 2,109 patients. The Corin Cormet 2000 (393 cases) and Biomet Recap implants (2,166 cases) were used in our series. In this study, the adverse wear failure (AWF) rate was 0.27%. At 10 years postoperatively, our Kaplan-Meier cumulative revision rate for AWF was 1% for all patients, 0.2% for men, 2.6% for women, and 9% for patients with a diagnosis of dysplasia.

Current Status Of Modern Fully Porous Coated Metal-on-metal Hip Resurfacing Arthroplasty

Arthroplasty. J Arthroplasty. 2013 May 13. pii: S0883-5403(13)

Between March 2007 and July 2010, 1000 consecutive fully porous coated hip resurfacing arthroplasties (HRA) were performed by a single surgeon in 871 patients. The average length of follow-up was 3 ± 1 years. Three cases (0.3%) in three patients showed adverse wear related failures. Another 17 (1.7%) failures were identified at the time of this study. Using any failure of any component as the endpoint, the survivorship rate was 98.8% at two years and 97.4% at five years.

A Safe Zone For Acetabular Component Position In Metal-on-metal Hip Resurfacing Arthroplasty

J Arthroplasty. 2013.

*WINNER OF THE 2012 HAP PAUL AWARD*. A safe zone for acetabular component positioning in hip resurfacing (RAIL: Relative Acetabular Inclination Limit) was calculated based on implant size and acetabular inclination angle (AIA). For AIA below the RAIL, there were no adverse wear failures or dislocations, and only 1% of caseswith ion levels above 10 μg/L. Other than high inclination angle and small bearing size, female gender was the only other factor that correlated with high ion levels in the multivariate analysis.

Total Knee Arthroplasty With Fully Porous Coated Stems In The Treatment Of Large Bone Defect

J Arthroplasty. 2013.

Between February1999 and April 2006, 25 patients (28 knees) underwent a TKA by a single surgeon. At an average final follow-up of 7±2years (range, 3-10years), 34 (100%) of 34 fully porous stems had achieved bone ingrowth. However, one case (3%) had a component loosening due to the de-bonding of sheets of beads from the stem.

Hip Resurfacing With The Biomet Hybrid Recap-magnum System

J Arthroplasty. 2012

7-year results. 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.

Is There Added Risk In Resurfacing A Femoral Head With Cysts?

Journal of Orthopaedic Surgery and Research. 2011

Femoral head cysts have been identified as a risk factor for early femoral failures after metal-on-metal hip resurfacing arthroplasty (HRA) based on limited scientific data. However, we routinely performed HRA if less than 1/3 of the femoral head appeared destroyed by cysts on the preoperative radiograph.

Risk Factor Analysis For Early Femoral Failure In Metal-on-metal Hip Resurfacing Arthroplasty

J Orthop Surg Res. 2012

The importance of appropriately selecting patients based on factors such as bone mineral density, body mass index, age, gender, and femoral component size has been demonstrated in many studies as an aid in decreasing the rate of revisions and improving the outcomes for patients after hip resurfacing arthroplasty (HRA).

Clinical Outcome Of The Metal-on-metal Hybrid Corin Cormet 2000 Hip Resurfacing System

J Arthroplasty. 2011

An 11-year follow-up study. This report extends the follow-up for the largest center of the first multicenter US Food and Drug Administration investigational device exemption study on metal-on-metal hip resurfacing arthroplasty up to 11 years. A single surgeon performed 373 hip resurfacing arthroplasties using the hybrid Corin Cormet 2000 system.

Prevalence Of Dysplasia As The Source Of Worse Outcome In Young Female Patients After Hip Resurfacing Arthroplasty

International Orthopaedics. 2012

Smaller femoral component size has been implicated as underlying the risk factor that explains the higher failure rate in women who have a hip resurfacing arthroplasty (HRA). We suspect that the diagnosis of dysplasia may be a more important causative risk factor than either small component size or female gender.

The First 100 Fully Porous-coated Femoral Components In Hip Resurfacing

Bull NYU Hosp Jt Dis 2011.

Uncemented fixation of implants to bone is a proven technology in traditional hip arthroplasty surgery. However, cement fixation is currently the standard method for the femoral component in hip resurfacing.

Comparison Of Fully Porous-coated And Hybrid Hip Resurfacing

Orthopedic Clinics of North America.2011

A minimum 2-year follow-up study. The purpose of this study was to compare clinical and radiological outcomes of the first 191 fully porous-coated hip resurfacing arthroplasties with 96 hybrid hip resurfacing arthroplasties performed during the same period at a minimum 2-year follow-up to evaluate the initial fixation of uncemented femoral resurfacing components.

Comparison Of Unilateral And Rapidly Staged Bilateral Hip Resurfacing Arthroplasty

Acta Orthop Belg. 2011

The purpose of this study was to compare the clinical results and complication rates after unilateral vs. staged bilateral metal-on-metal hip resurfacing arthroplasty (HRA) when using a comprehensive blood management program, to determine if there was increased risk for staged HRAs.

Hip Resurfacing In Patients Who Have Osteonecrosis And Are 25 Years Or Under

Clin Orthop Relat Res. 2011

Young patients with osteonecrosis (ON) treated with THA often have suboptimal function and radiographic failure with eventual revision. Resurfacing may be an option because of potentially increased functionality and decreased radiographic failure, although neither has been confirmed in the literature.

Is Resurfacing Arthroplasty Appropriate For Posttraumatic Osteoarthritis?

Clin Orthop Relat Res. 2011

High survival has been reported for resurfacing arthroplasty in patients with femoral deformities. Also, hardware removal may not always be necessary with resurfacing arthroplasty and may eliminate some of the difficulties performing total hip arthroplasty (THA) in patients with posttraumatic osteoarthritis.

Intraoperative Radiographs For Placing Acetabular Components In Hip Resurfacing Arthroplasty

Clin Orthop Relat Res. 2011

Various clinical and biomechanical studies suggest certain acetabular positions may be associated with higher wear and failure rates in modern metal-on-metal hip resurfacing arthroplasties. However, there are no widely available, reliable, and cost-effective surgical techniques that ensure surgeons are able to place an acetabular component within the safe range of inclination angles after hip resurfacing surgeries.

Metal-on-metal Resurfacing With An Uncemented Femoral Component.

J Bone Joint Surg Am, 2008

A 7-year follow-up study: Metal-on-metal hip resurfacing with hybrid fixation has been introduced as an alternative to standard total hip arthroplasty, especially for young and active patients. There are few studies in the literature on the midterm results of cementless femoral side resurfacing. The purpose of this study was to present our seven-year clinical results of a series of twenty cementless metal-on-metal hip resurfacing procedures.