What is aseptic necrosis of the femoral head


  • Quiet hip disease

  • Quiet hip disease

    Aseptic necrosis of the femoral head - a serious disease of the hip joint due to disruption of the structure of bone tissue, the microcirculation and fatty degeneration of the bone marrow.

    What is aseptic necrosis of the femoral headThe problem of degenerative lesions of osteoarticular apparatus is complex, primarily because of the lack of clear ideas about their nature and location, among other diseases.

    Currently, a degenerativediseases of the joints include deforming arthrosis (osteoarthritis), degenerative-dystrophic lesions with cystoid restructuring articulated bones, aseptic osteonecrosis.

    Changes in the structure of bone andrelevant pathological processes are marked with a number of diseases. They arise as a result of several factors: micro traumas, acquired or congenital deformations exceeding the limit of physical activity, hormonal and metabolic disorders, infectious and allergic diseases, systemic diseases associated with impaired immune homeostasis, toxic effects, infections, previous orthopedic procedures, and others.

    The pathological deviations from normal tissue formation sequence generation can occur at any time of life.

    Clinically, changes in the structure of the bone tissuediseases that are inherently degenerative-dystrophic processes manifest increasing deformation of epiphyses and apophyses of bones, pain, and dysfunction of the hip joints.

    After analyzing the structural and radiographic changes, we introduced the four stages of the division of avascular necrosis of the femoral head.

    I stage. Microscopic changes in bone structure andsubchondral osteonecrosis. Amazed cancellous femoral head cartilage material with an unmodified and a zone of structural change is not more than 10%.

    Stage II. Impression fracture. Femoral head surface has cracks of the "cracked shell." The load area of ​​trabeculae are cracked or irregularly shaped lesions mikrokollapsa. The zone of structural change is not more than 10-30%.

    Stage III. Fragmentation. Characterized by irregular contours of the femoral head, mild collapse, the emergence of a few pockets of seals or cystic degeneration. Changes interarticular space (contraction or expansion). The zone of structural change is not more than 30-50%.

    Stage IV. Complete destruction of the head. Head shape is changed, portions of the collapse of irregular shape or collapse the entire head. The structure of trabecular dissolved or sealed, the strip fractures of irregular shape. Internal or external edge of the acetabulum ectopic undergo changes. Interarticular space narrowed or disappeared. There is a dislocation or subluxation. Zone Structural changes of 50-80%.

    The duration of the flow stage I is 6 months, II step - 6 months, III stage - 3-6 months, followed by a transition stage IV.

    Using the data of regular check-ups and examinations data and trauma therapists contact detection algorithm of the disease has been formed.

    Because the clinical manifestations are alarming and requirecomprehensive and dynamic evaluation of hip joint pain, pain in the groin area to return to the knee joint, limitation of movement in the hip joint, muscular atrophy signs, unmotivated pain in the knee joint. Particular attention is given to patients who are at-risk groups.

    Leave a reply