Sentences with phrase «of femoral heads»

Signs of hip dysplasia found on X-ray include shallow sockets, irregular shape of femoral heads, looseness of the joint and degenerative joint disease or osteo - arthritis.

We recently developed a method to simplify the DLS score calculation; a simple linear measurement (the S measurement) on radiographs for subluxation of femoral heads to be applied to the assessment of both unaffected and dysplastic joints.

The seating of the femoral heads in the acetabular sockets is examined and the presence or absence of hip arthritis is assessed.

However, the study provides initial clinical evidence that larger, size - matched grafts have the potential to improve outcomes when resurfacing cartilage defects of the femoral head in the hip joint.

MRI revealed decreased blood flow to the injured area and osteonecrosis in 80 percent of patients in the superomedial quadrant of the femoral head.

Reno et al. (2003)(but see Plavcan et al., [2005] and the reply by Reno et al., [2005]-RRB- challenged this premise with an analysis of the sexual dimorphism of femoral head diameter in Au.

The hip muscles act on three mutually perpendicular main axes, all of which pass through the center of the femoral head, resulting in three degrees of freedom and three pair of principal directions: Flexion and extension around a transverse axis (left - right); lateral rotation and medial rotation around a longitudinal axis (along the thigh); and abduction and adduction around a sagittal axis (forward - backward); [29] and a combination of these movements (i.e. circumduction, a compound movement in which the leg describes the surface of an irregular cone).

Miokovic et al. (2011) divided the gluteus maximus into upper and lower regions at the point of greatest cross-sectional area of the femoral head, which resulted in the lower gluteus maximus being around 60 % of the total and the upper gluteus maximus being around 40 % of the total by volume.

With the removal of the femoral head this hip joint develops a false fibrous joint over time.

In other words, the instability created by weak supportive ligaments keeps the body from being able to manufacture a deep, smooth hip socket for the ball to fit snuggly into, resulting in the flattening of the acetabulum (hip socket) and a squaring of the femoral head (the ball).

Post-surgical femoral head ostectomyThe FHO procedure is indicated for the treatment of hip dysplasia, dislocated hips, non-repairable fractures of the femoral head, and some diseases of the hip (i.e. Legg Perthes).

In dogs with this disease the blood supply to the femoral head is compromised resulting in necrosis of the femoral head.

Arthritis is a common side effect of Hip Dysplasia due to the movement of the Femoral Head.

Legg - Perthes disease has many «aliases:» Legg - Calve - Perthes disease, aseptic necrosis of the femoral head, and avascular necrosis of the femoral head.

Legg - Calve - Perthes disease (Avascular or Aseptic Necrosis of the Femoral Head) is the condition in which the femoral head starts to degenerate.

Note the irregular shape of the femoral head («ball» portion of the «ball and socket» joint of the hip) on the right side of the picture.

With time, the top surface of the femoral head will become flattened and misshapen as the cartilage and underlying bone collapses.

She has now had an FHO (Femoral Head Ostectomy, removal of the femoral head) and is starting a slow recuperation.

Legg - Perthes disease: a disease where the blood vessels feeding the femoral head (top part of the thigh bone) shrink, leading to starvation and death of the femoral head (the ball of the ball - and - socket joint of the hip).

The acetabulum (the hip socket) is easily deformed by continual movement of the femoral head.

Smaller breeds of dogs may have a similar condition called Legg - Calve - Perthes Disease or avascular necrosis of the femoral head and neck.

This is an avascular (pertaining to inadequate blood supply), aseptic (not infected), developmental osteonecrosis (dying of bone tissue) of the femoral head and neck, found almost entirely in toy or other small breeds.

OFA radiologists evaluate the hip joints for congruity, subluxation, the condition of the acetabular margins and acetabular notch, and the size, shape, and architecture of the femoral head and neck.

Three - Plane Intertrochanteric Osteotomy: Portions of the femoral head are cut in order to change the angle at which it fits into the acetabulum.

The DI ranges from 0 to 1 and is calculated by measuring the distance the center of the femoral head moves laterally from the center of the acetabulum and dividing it by the radius of the femoral head.

Canine hip dysplasia (CHD) is a mostly inherited disease involving abnormal development of the femoral head and acetabulum.

A DI of 1 indicates complete luxation with little or no coverage of the femoral head.

The procedure involves a surgical breaking of the pelvic bones and a realignment of the femoral head and acetabulum restoring the coxofemoral weight - bearing surface area and correcting femoral head subluxation.

Full range of motion in the canine hip joint includes the ability of the femoral head to move outward and away from the acetabulum to a certain degree.

The exact cause is not known but there is poor blood supply to the head of the femur which causes collapse of the femoral head and neck followed by resorption and remodeling.

Legg - Calve - Perthes disease is also known as avascular necrosis of the femoral head.

In most cases of canine hip dysplasia, the acetabulum is rather shallow or not deep enough to allow for the more secure fit of the femoral head.

Other potential problems in the breed include patella luxation (dislocating kneecap), hip dysplasia (degeneration or malformation of the hip joint), Legg - Perthes (breakdown of the femoral head, the «ball» of the ball - and - socket hip joint), and a form of encephalitis apparently unique to the breed.

The normal hip consists of femoral head, which is round like a ball and connects the femur to the pelvis; the acetabulum, which is the socket of the pelvis; and the fibrous joint capsule and lubricating fluid that make up the joint.

69 % of the dogs examined had limb shortening — especially in small breeds having surgery for avascular necrosis of the femoral head.

Hip dislocation is the common term for the separation of the femoral head from the pelvic acetabulum.

A limp may remain because the leg is shortened by removal of the femoral head and neck, some loss of range of motion and a gait abnormality persists, and the thigh and hip muscles remain somewhat atrophied.

Indications include developmental bone problems such as avascular necrosis of the femoral head (Legg - Perthes Disease), irreparable fractures, hip luxation that can not be successfully managed by other methods, and arthritis for reasons other than joint infection.

The five most common indications for a FHO included degenerative joint disease, avascular necrosis of the femoral head, capital epiphyseal and femoral neck fracture, comminuted acetabular or pelvic fracture, and non-reducible or chronic coxofemoral luxation.

Gendreau C, Cawley AJ: Excision of the femoral head and neck: the long term results of 35 operations: J Am Animal Hospital Assn, 13:605 - 608, 1977 5.

Fig 2: X-ray of a miniature poodle after total hip replacement to treat avascular necrosis of the femoral head.

Legg - Calve - Perthes disease is also known as avascular or aseptic necrosis of the femoral head.

Not all dogs with hip dysplasia will have a positive Ortolani test, so the veterinarian will also take X-rays to examine the shape of the femoral head and the acetabulum and to look for evidence of arthritis in the hip.

As mentioned, surgery involves removal of the femoral head under general anesthesia.

There are many reasons why a pet might benefit from removal of the femoral head and neck.

Many arthropathies are developmental, including aseptic necrosis of the femoral head, patellar luxation, osteochondrosis, elbow dysplasia, and hip dysplasia.

The femoral head is held in place by a thick ligament called the «capital» ligament or simply the «round ligament of the femoral head.»

This is an expensive procedure that involves the replacement of the femoral head and neck with copper chrome or titanium.

While the major reason for hip replacement is to treat disabling HD, other disorders can also benefit: Legg - Calvé - Perthes disease, permanent dislocation from trauma, bad fracture of the femoral head and neck, hereditary or environmental defects in union of bone centers, and excision arthroplasties that have failed to solve the problem.

In 1966, Henricson, Norberg and Olsson refined the definition of CHD describing it as: «A varying degree of laxity of the hip joint permitting subluxation during early life, giving rise to varying degrees of shallow acetabulum and flattening of the femoral head, finally inevitably leading to osteoarthritis.»