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Journal of Long-Term Effects of Medical Implants
SJR: 0.145 SNIP: 0.491 CiteScore™: 0.89

ISSN Imprimir: 1050-6934
ISSN En Línea: 1940-4379

Journal of Long-Term Effects of Medical Implants

DOI: 10.1615/JLongTermEffMedImplants.2013010097
pages 301-307

Outcomes of Primary Total Knee Arthroplasty in the Morbidly Obese Patients

Kimona Issa
School of Health and Medical Sciences, Department of Orthopaedics, Seton Hall University, 400 S Orange Ave, South Orange, New Jersey
Mark J. McElroy
Center for Joint Preservation and Replacement, Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, Maryland
Sina Pourtaheri
Seton Hall University, School of Health and Medical Sciences, Department of Orthopaedic Surgery, South Orange Village, NJ
Sujal Patel
Seton Hall University, School of Health and Medical Sciences, Department of Orthopaedic Surgery, South Orange Village, NJ
Julio J. Jauregui
Center for Joint Preservation and Replacement, Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, Maryland; Department of Orthopaedic Surgery and Rehabilitation Medicine, SUNY Downstate Medical Center/University Hospital Brooklyn, Brooklyn, NY
Michael A. Mont
Center for Joint Preservation and Replacement, Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, Maryland

SINOPSIS

The purpose of this study was to assess the clinical and radiographic outcomes of primary total knee arthroplasty (TKA) in morbidly obese patients compared to a cohort who had a normal body mass index (BMI). We reviewed 105 knees in 84 patients who had a minimum BMI of 40 kg/m2 who underwent a primary TKA between 2006 and 2010. There were 17 men and 67 women who had a mean age of 59 years and a mean follow-up of 52 months. Outcomes evaluated included implant survivorship, Knee Society scores, activity scores, and complications. Kaplan-Meier analysis demonstrated statistically similar overall implant survivorship between the morbidly obese and the comparison groups (96 vs 97%). However, the mean Knee Society objective (85 vs 91 points) and functional scores (84 vs 89 points), as well as activity scores (4.2 vs 6.1 points) were lower and complications were higher in morbidly obese patients at final follow-up. It is encouraging that in the morbidly obese patients, total knee arthroplasty can have acceptable results at midterm follow-up, however, these patients may benefit from preoperative counseling to have realistic expectations from their surgery.


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