Accurate prosthetic cup placement is very important in total hip arthroplasty (THA). When the surgeon is impacting the acetabular cup, it is assumed that the patient's pelvis is perpendicular to the operating table. In reality the pelvis may not be truly lateral, and error in patient positioning may influence the resultant cup orientation. The primary aim of this study was to examine the accuracy of patient positioning prior to THA. A secondary aim was to see if patient BMI influenced the accuracy of positioning.Introduction
Objectives
Past research has focused on complications of bony fixation of navigation reference frames such as fractures and cutting errors. This study investigates the consequences of the use of iliac crest percutaneous navigational array pins in terms of pain, irritability and the impact on quality of life.Introduction
Objective
Leg length and offset are important considerations in total hip arthroplasty (THA). Navigation systems are capable of providing intra-operative measurements, which help guide the surgeon in leg length and offset adjustment. This controlled study investigates whether the use of computer navigation leads to more accurate achievement of pre-operative leg length and offset targets in THA.Introduction
Objective
Leg length and offset are important considerations in total hip arthroplasty (THA). Navigation systems are capable of providing intra-operative measurements of leg length and offset, and high accuracy has been shown in experimental studies. This Introduction
Objective
Lower limb mal-alignment as a result of fracture malunion can result in knee degenerative arthritis or predispose to early arthroplasty failure due to the altered mechanical axis. The choice of corrective osteotomy is often determined by potential complications. Opening wedge osteotomy is associated with poor bone healing especially in adult diaphyseal bone. Distraction osteogenesis enables gradual deformity correction with the gap filled by regenerate bone. Bone formation however is formed less favourably in the diaphysis and metaphyseal osteotomy is advised. We present a consecutive series of adult tibial diaphyseal correction using the Taylor Spatial Frame utilising the method of distraction osteogenesis. 15 adults, 11 male and 3 female, underwent tibial deformity correction. A mid diaphyseal osteotomy was made using minimal soft tissue dissection and an osteotome. The site was determined by the centre of rotation of angulation (CORA). After a 6 day latency period distraction was undertaken by the Taylor Spatial Frame. Patients were encouraged to fully weight bear throughout the treatment process. Following regenerate consolidation the frame was removed and a below knee weight bearing cast applied for 4 weeks.Introduction
Method
