What does subchondral collapse mean?

What does subchondral collapse mean?

A subchondral fracture is a fracture of the trabecular cancellous bone just beneath the subchondral bone plate without disruption of the articular surface 1.

How do you treat a collapsed hip?

If osteonecrosis has advanced to the point where the femoral head has already collapsed, the most successful treatment is total hip replacement. In this procedure, your doctor removes the damaged bone and cartilage, then positions new metal or plastic joint surfaces to restore the function of your hip.

What does collapsed hip mean?

If you have osteonecrosis of the hip, your blood vessels gradually cut off nourishment to the top of the thighbone (femur) where it fits in the hip socket. Without blood, the head of your femur dies and collapses. This can make it painful to move your hip, and you may develop arthritis and a limp.

Is subchondral collapse a fracture?

Subchondral insufficiency fractures are non-traumatic fractures that occur immediately below the cartilage of a joint. Although low bone density may be present concurrently, it is not the underlying cause of subchondral insufficiency fractures in the majority of patients.

How do you fix a subchondral fracture?

Subchondroplasty is a technique indicated for treatment of early subchondral fractures or stress related marrow edema associated with osteoarthritis and involves the injection of synthetic calcium phosphate into the trabecular space, providing mechanical support.

How do you treat a subchondral fracture?

Subchondral insufficiency fracture of the femoral head (SIFFH) is characterized by acute onset hip pain without overt trauma. It appears as a low intensity band with bone marrow edema on T1-weighted MRI. The most common course of treatment is protected weight bearing for a period of several weeks.

What causes lack of blood flow to the hip?

Avascular necrosis is a painful bone condition that gets worse over time and can affect your mobility. It occurs when something cuts off blood flow to one of your bones. Causes include broken bones, dislocated hips, radiation therapy and alcohol misuse.

How long does it take for a subchondral fracture to heal?

Traditionally, conservative therapy is continued for 3 months, but it has been demonstrated that in reversible cases of subchondral fracture, bone marrow edema required an average of 5 months to resolve,7 so a longer period of conservative treatment and observation may be preferable.

How are subchondral insufficiency fractures treated?

What causes a subchondral fracture?

Subchondral insufficiency fractures (SIF) are a type of stress fracture which occurs below the cartilage on the weight bearing surface of a bone. SIF occur when normal physiological forces are repeatedly applied to an area of bone compromised by non-tumorous disease, resulting in fracture.