Left Acetabular Roof Mri

Metastatic lesions localized in the periacetabular area cause troublesome pain and reduced mobility of the patients.

Left acetabular roof mri.

It is seen in as many as 10 of hips and is typically located at the 12 o clock position both in the coronal and sagittal planes. 22 acetabular depth can be quantified on the same oblique axial images that are used to calculate the alpha angle. The reported incidence is approximately 3 per 100 0. Radiotherapy effectively decreases pain yet it does not restore the ability to load the joint.

Protrusio acetabuli and acetabular retroversion a posteriorly oriented acetabulum can be seen on oblique axial mri of the hip. In the athlete with a suspected stress fracture it is best to choose mri as the first advanced imaging test. The acetabular retroversion will result in an increase in coverage of the anterior aspect of the femoral head. Type 1 which was filled with contrast material on mr arthrograms and type 2 which was filled with cartilage.

Subsequent mri was performed and demonstrated bone marrow oedema bmo in the acetabulum and the femoral head and neck figure 2. A coronal fat saturated t2 weighted mr image of pelvis shows deficient acetabular roof in left hip center edge angle 20 consistent with hip dysplasia. Saf was classified into two types. Epidemiology acetabular fractures are uncommon.

Acetabular fractures are a type of pelvic fracture which may also involve the ilium ischium and or pubis depending on fracture configuration. Three dimensional surface rendered ct image of the right acetabulum obtained in anatomic position with digital transection in the coronal plane shows a 45 roof arc angle and a 10 mm subchondral arc purple area the superiormost 10 mm of the acetabulum and the arc subtended by the 45 roof arc angle. It is located more medially within the acetabular roof than the saf immediately adjacent to the acetabular notch figure 5. It is a thin star shaped focal bare area devoid of articular cartilage and can be mistaken for a pathologic defect at mri and arthroscopy.

Surgical treatment involving resection of metastatic lesions and joint reconstruction using bone grafts is burdened with a high rate of complications. The new high field strength magnets operating at 1 5 tesla are more comfortable for the patient. Mri can be performed rapidly is cost effective and is sensitive and specific for the diagnosis of occult fracture. Figure 1 bone scintigraphy anterior view showed intense uptake in the left acetabular region and less avid uptake in the femoral head and neck compared with the right side.