How is AVN diagnosed in hip fracture?
How is AVN diagnosed in hip fracture?
An associated stress fracture (arrowhead) is noted within the femoral neck. Early detection of hip AVN is critical, as all treatments geared towards preservation of the femoral head are more successful early in the course of the disease. Of all imaging tests, MRI is the most sensitive means to diagnose AVN.
What is avavn of the hip?
AVN of the hip is a significant cause of morbidity in the United States, and can affect patients both young and old. With disease progression, articular surface collapse and secondary osteoarthritis develop, and the end result in many patients is total hip replacement.
What are the classification of AVN on MRI?
The MRI staging classification of Mitchell et al. (see Table 1) describes four classes of AVN based on the signal characteristics within the center of the lesion on T1 and T2-weighted images. This classification may be useful in grading lesion acuity, as infarcted bone will tend to progress through the classes of signal intensity over time.
What are the signs and symptoms of abnormal abnormality of the hip?
Abnormality involves approximately 20% of the entire articular surface and more than 50% of the weight-bearing surface of the femoral head. A moderate joint effusion is also present on this side. Loss of cartilage superiorly with small osteophytes indicates early osteoarthritis. The right hip is grossly unremarkable.
Can a total joint replacement provide a successful treatment for adolescent hip AVN?
Can a total joint replacement provide a successful treatment for adolescent hip AVN? Yes—the success of total hip replacement is very predictable and will relieve the pain associated with hip AVN in the adolescent; however, the artificial hip is not as durable as the natural hip.
What types of X-rays are performed in the workup of AVN?
Patients might undergo plain X-rays that are “normal” or have very subtle findings during this phase. Patients who have an MRI will demonstrate the typical changes of early AVN.
