Prosthetic joint infection (PJI) complicates ∼1% of arthroplasties but accounts for considerable morbidity. Both the timing and features of PJI can vary widely. Patients may present with early (≤3 months post-operatively), delayed (3-24 months) or late disease (>24 months). They may be acutely unwell with systemic signs of sepsis or describe only a chronically painful joint with or without sinu...

Arthroplasty, the practice of rebuilding diseased biological joints using engineering materials, is often used to treat severe arthritis of the knee and hip. Prosthetic joints have been created in a “biomimetic” manner to reconstruct the shape of the biological joint. We are at a disadvantage, however, in that metals and polymers used to replace bone and articular cartilage often wear out too s...

BACKGROUND AND PURPOSE Obesity increases the risk of deep infection after total joint arthroplasty (TJA). Our objective was to determine whether there may be body mass index (BMI) and weight thresholds indicating a higher prosthetic joint infection rate. PATIENTS AND METHODS We included all 9,061 primary hip and knee arthroplasties (mean age 70 years, 61% women) performed between March 1996 a...

Lower limb amputation significantly affects the quality of the leg amputee’s daily life. Recent advancements in embedded electronics and electromechanical actuators have propelled the recent development of powered artificial legs [1-3]. Usually, finite-state machine (FSM) is utilized in the design of powered prosthetic legs to control the knee joint impedance or knee position in each gait phase...

Abstract: This paper describes an electrically powered prosthetic system controlled by electromyography (EMG) signal detected from the skin surface of the human body. The research of electrically powered prosthetic systems is divided into two main subjects. One is the design of the joint mechanism. We propose the use of an adaptive joint mechanism based on the tendon-driven architecture. This m...

BACKGROUND Exploring knee joint physiological functional stiffness is crucial for improving the design of prosthetic legs that aim to mimic normal gait. This study hypothesizes that knee joint stiffness varies among different activities of daily living, additionally while the knee performs natural movements; the magnitude of the stiffness indicates the degree of energy storage element sufficien...

A case of postoperative prosthetic hip joint infection due to Campylobacter fetus subsp. fetus is described. Difficulties in isolation and antimicrobial susceptibility testing of this organism are discussed.

This paper presents a comparative experimental study of flexion-extension movement in healthy elbow and in the prosthetic elbow joint fixed on an original experimental bench. Measurements were carried out in order to validate the functional morphology and a new elbow prosthesis type ball head. The three-dimensional (3D) model and the physical prototype of our experimental bench used to test elb...