The association between procedure volume and post-procedure outcomes such as mortality or perioperative complications has been studied since the 1970s for a wide variety of procedures. A clear understanding of the implications of procedure volume for healthcare policy is critical because payers in both the private and public sectors have begun to develop policies that incorporate procedural vol...

Numbers of patients are suffering from aseptic loosening after total hip replacement, which can need further revision surgery. Particle-induced osteolysis has been considered as a major cause of aseptic loosening after hip joint replacement. This is a prospective study, and there are 82 patients of unilateral osseous arthritis and 10 normal physical examination people in our hospital for this s...

TANNER MCGINN, BS RESEARCH ASSISTANT RUBIN INSTITUTE FOR ADVANCED ORTHOPEDICS CENTER FOR JOINT PRESERVATION AND REPLACEMENT SINAI HOSPITAL OF BALTIMORE BALTIMORE, MARYLAND MORAD CHUGHTAI, MD RESEARCH FELLOW DEPARTMENT OF ORTHOPAEDIC SURGERY CLEVELAND CLINIC CLEVELAND, OHIO ANIL BHAVE, PT PHYSICAL THERAPIST RUBIN INSTITUTE FOR ADVANCED ORTHOPEDICS CENTER FOR JOINT PRESERVATION AND REPLACEMENT SI...

Prophylactic antimicrobial regimens providing adequate drug levels in tissue during surgery and for periods of 24 hours to 14 days are of proven effectiveness in reducing infection rates after joint arthroplasty. Although most surgeons employ short regimens of < 24 hours' duration, their efficacy has not been clearly established for joint replacement in placebo-controlled trials. Careful prepar...

A passive forward kinematics knee model was used to predict knee motion of a total joint replacement. Given ajoint angle, maps of articular surfaces, and patient-specific ligament properties, this model predicted femorotibial contact locations based on the principle of ligament-strain minimization. The model was validated by physical experiments on a commonly implanted knee prosthesis, showing ...

INTRODUCTION Total joint replacement is considered a surrogate measure for symptomatic end-stage osteoarthritis. It is unknown whether the adipose mass and the distribution of adipose mass are associated with the risk of primary knee and hip replacement for osteoarthritis. The aim of the present investigation was to examine this in a cohort study. METHODS A total of 39,023 healthy volunteers ...

BACKGROUND Preclinical durability testing of hip replacement implants is standardised by ISO-14242-1 (2002) which is based on historical inverse dynamics analysis using data obtained from a small sample of normal healthy individuals. It has not been established whether loading cycles derived from normal healthy individuals are representative of loading cycles occurring in patients following tot...

35 Background. Preclinical durability testing of hip replacement implants is standardised by 36 ISO-14242-1 (2002) which is based on historical inverse dynamics analysis using data 37 obtained from a small sample of normal healthy individuals. It has not been established 38 whether loading cycles derived from normal healthy individuals are representative of loading 39 cycles occurring in patien...

BACKGROUND Hip and knee arthroplasties are common and successful procedures, however, success and durability are not guaranteed. The revision burden, defined as the ratio of implant revisions to the total number of arthroplasties in a specific period, is a measure of the steady state of arthroplasty success in a given registry. This study examines the hypothesis that revision burden would be si...