Juniper Publishers Journal of Orthopedic and Orthoplastic Surgery

 Juniper Online Journal of Orthopedics & Orthoplastic Surgery Abstract A narrative literature review of risk factor or predictor for Complex Regional Pain Syndrome (CRPS) or Reflex Sympathetic Dystrophy (RSD) was performed in the English language. Female sex, elderly people between the age of 45 and 65, pregnancy, intra-articular fracture, comminuted and displaced fracture, high energy trauma, severe fracture, strong pain after fracture, decreased sympathetic vasoconstrictor response after fracture, nerve and spinal cord injury, ankle dislocation, ankle fracture, injury in the extremities, treatment to the upper limb, motor nerve injury, decreased function before operation, poor physical functioning, higher median household income, economic compensation via work disability, social or psychological stress, good to excellent school performers, osteoporosis, hypertriglyceridemia, rheumatoid arthritis, musculoskeletal comorbidities, history of allergies, skin hypers...

 Juniper Online Journal of Orthopedics & Orthoplastic Surgery Background Owing to recent improvements in the quality, shape and surface area of the implants for total hip arthroplasty, wear problems, which is one of the chronic complications of total hip arthroplasty, have been solved up to a certain level. However, instability and dislocation of the implants, which is the second most common complication after component loosening, remain unsolved, negatively affecting quality of life and furtherly causing failure of implants. Using femoral head implants smaller than the patient’s natural femoral head is a major cause of dislocation. We would like to discuss several issues of using large head implants as a bearing surface. Wear Contact surface and sliding distance are major factors in the occurrence of wear particles. As the diameter of the femoral head increases, contact area and the sliding distance of the articular su...