Stress fractures are classified as fatigue, resulting from normal bone being subjected to abnormal repetitive forces, and insufficiency, due to normal stress placed on abnormal bone. Stress injuries are most commonly seen in endurance athletes, such as runners and military recruits, as well as recreational athletes with sudden increase in activity. However, because stress injuries may progress to complete fracture and result in prolonged recovery or career-ending complications, it is imperative to identify these injuries early. Stress injuries are due to a mismatch between native bone strength and chronic mechanical load applied on bone over time. Recently, high-resolution conventional MR imaging is replacing MR arthrography at many centers. If symptoms or clinical exam findings suggest intra-articular pathology, dedicated small field-of-view (FOV) MR arthrography of the hip is considered the imaging method of choice. For symptoms of generalized pain or nonspecific physical exam findings, imaging is best performed with conventional MRI of the pelvis and hip. According to the American College of Radiology Musculoskeletal Imaging Criteria, MRI is the next appropriate imaging method in those individuals with negative radiographs. Anteroposterior view of the pelvis is standard, and dedicated views of the symptomatic hip are often performed in the athletic hip which include cross-table lateral, frog-leg lateral, or Dunn lateral. Femoral neck horizontal plane - femoral neck torsion.The radiographic examination is a critical component in the diagnostic evaluation and treatment decision-making process and considered the first-line imaging technique in the evaluation of hip pain.Femoral neck frontal plane - angle of inclination.However there are some signs on the frontal plane (crossover sign etc). Acetabulum coverage horizontal plane - acetabular version.Acetabulum coverage frontal plane - lateral centre edge etc.Many of the measurements can be conceptualised as follows in the frontal and horizontal plane. It is almost exclusively used in the paediatric population to assess for slipped upper femoral epiphysis (SUFE) and Perthes disease. bilateral examination allows for better visualisation of the hip joints and femoral neck.lateral projection to aid and diagnose femoroacetabular impingement (FAI) due to its increased sensitivity for detecting femoral head-neck asphericity.the ideal projection for bilateral hip or femur trauma.lateral projection demonstrating the neck of the femur without movement of the either limb.can only be conducted on unilateral hip trauma.lateral projection demonstrating the neck of the femur without movement of the affected limb.standard rolled lateral view demonstrating the femoral neck and acetabular rim can only be performed on non-trauma patients.often only performed in follow up studies.demonstrates the hip joint in the AP plane, with the limb internally rotated so the neck of the femur is in profile.Hip radiographs are performed for a variety of indications including 3.2 Acetabular Depth and Coverage Calculations.3.1 Acetabular Orientation and Morphology.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |