3/28/2024 0 Comments Xray of normal hip![]() ![]() The purposes of this study were: first, to compare the bilateral symmetry of the bilateral acetabular and proximal femoral medullary morphology by preoperative template measurement in patients undergoing bilateral hip arthroplasty second, to measure the range of normal values of bilateral hip joint differences and their relationship with body weight, age, and sex third, to study the range of the normal variations of bilateral anatomical differences and fourth, to explore the correlation of variations between anatomical parameters. Previous studies have focused on the bilateral femoral asymmetry, but studies on asymmetry have mainly concentrated on bone density changes, mechanical strength, the rotation angle, the lower limb length, and the distal femur very few reports have focused on the morphological symmetry of the proximal femur. However, this method is based on the bilateral symmetry of the lower limbs. At present, the commonly used method is to measure the template of THA through the contralateral hip joint, to restore the leg length and offset. When the proximal femur is deformed by degeneration, such as femoral neck fracture, hip dysplasia, coxa plana and similar conditions, measurements of the normal anatomy often become difficult. The success of hip arthroplasty depends on accurate matching of the prosthesis with the morphology of femur and the acetabulum, which also promotes the development of morphological studies of the femoral medullary cavity. Total hip arthroplasty (THA) effectively relieves pain in the hip joints and restores hip joint function. Additionally, the difference in the morphology of the hip medullary cavity is not present in a single plane but is synergistically affected by multiple adjacent planes. Conclusionīilateral symmetry was present among the patients with normal morphology of the hip medullary cavity, theoretically confirming the feasibility of structural reconstruction of the hip joint using the hip joint on the uninjured side. The difference in the use of stem size is not due to the morphological difference of bilateral medullary cavity, but due to the different of 1- or 2-stage surgery. Among various anatomical parameters, a correlation was present between medullary cavity widths of T + 20, T, and T − 20. Among the demographic factors, there was a correlation between body weight and NSA. ResultsĮxcept for the isthmus width, there were no significant differences in the anatomical morphology of the hip joint. Postoperative measurements included stem size, difference of leg length and offset. Anatomical parameters, including the acetabular abduction angle and trochanteric height, were measured using the Noble method. Imaging data included 224 patients X-ray and 30 CT data at the end of the cohort. ![]() This study included 224 patients (448 hips) who were diagnosed with osteoarthritis (OA) and avascular necrosis (AVN) of the femur head, and underwent bilateral primary total hip arthroplasty (THA) in our hospital from January 2012 to August 2020. We investigated the bilateral hip symmetry and range of anatomical variations by measurement and comparison of bilateral hip anatomical parameters. ![]() The application of the anatomical parameters of the contralateral hip joint to guide the preoperative template of the affected side relies on the bilateral hip symmetry.
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