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Hip dysplasia

Hip dysplasia is a congenital disease that, in its more severe form, can eventually cause lameness and painful arthritis of the joints. It is caused by a combination of genetic and environmental factors. It can be found in many animals and occasionally in humans, but is common in many dog breeds, particularly the larger breeds. more...

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Description

In the normal anatomy of the hip joint, the thigh bone (femur) joins the hip in the hip joint, specifically the caput ossis femoris. The almost spherical end of the femur articulates with the hip bone acetabulum, a partly cartilaginous mold into which the caput neatly fits. It is important that the weight of the body is carried on the bony part of the acetabulum, not on the cartilage part, because otherwise the caput can glide out of the acetabulum, which is very painful. Such a condition also may lead to maladaptation of the respective bones and poor articulation of the joint.

In dogs, the problem almost always appears by the time the dog is 18 months old. The defect can be anywhere from mild to severely crippling. It can cause severe osteoarthritis eventually.

Causes

In dogs, there is considerable evidence that genetics plays a large role in the development of this defect. There might be several contributing genetic factors, including a femur that does not fit correctly into the pelvic socket, or poorly developed muscles in the pelvic area. Large and giant breeds are susceptible to hip dysplasia, and cocker spaniels and Shetland sheepdogs are also known to suffer from it. Cats are also known to have this condition, especially Siamese.

Detection

The classic diagnostic technique is with appropriate X-Rays and hip scoring tests. These should be done at an appropriate age, and perhaps repeated at adulthood - if done too young they will not show anything. Since the condition is to a large degree inherited, the hip scores of parents should be professionally checked before buying a pup, and the hip scores of dogs should be checked before relying upon them for breeding.

Prevention

Overfeeding puppies and young dogs, particularly in the giant breeds, might aggravate the problem or bring it on earlier, because pups tend to be more active, less aware of their physical limitations, and have immature bones and supporting structures carrying their weight. Dogs from breeds which are known to be prone to dysplasia, can be kept slightly leaner than normal until around 2 years old, by which time the bones are full strength and the animal can be easily brought up to its normal adult weight. Overexercising young dogs whose bones and muscles have not yet fully developed might also be a contributing factor.

Symptoms

Dogs might exhibit signs of stiffness after rising from rest, reluctance to exercise, bunny-hopping gait, lameness, pain, or wasting away of the muscle mass in the hip area. Radiographs often confirm the presence of hip dysplasia, but radiographic features may not be present until two years of age in some dogs. Moreover, many affected dogs do not show clinical signs, but some dogs manifest the problem before seven months of age, while others do not show it until well into adulthood.

Read more at Wikipedia.org


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Hereditary Bone and Joint Diseases in the Dog: Osteochondroses, Hip Dysplasia, Elbow Dysplasia $118.25 Hip Dysplasia (The Essential Guide to Natural Pet Care) $2.50
Canine Hip Dysplasia and Other Orthopedic Problems $5.00 Idiopathic Hip Dysplasia (International Practice and Research - Bailliere's Clinical Orthopaedics) $69.90
Universal Ultrasound Urged to Find Hip Dysplasia.(Statistical Data Included) : An article from: Family Practice News $5.95 Nonsurgical treatment to regain hip abduction motion in Perthes disease: a retrospective review.(Original Article) : An article from: Southern Medical Journal $5.95
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Bernese periacetabular osteotomy for hip dysplasia in young adults
Hip dysplasia is one of the most common disorders of the hip, presenting in the first three years of life. Literature has shown that an association exists ...
Congenital hip dysplasia
A condition of abnormal development of the hip, resulting in hip joint instability and potential dislocation of the thigh bone from the socket in the pelvis.
Universal Ultrasound Urged to Find Hip Dysplasia - Statistical Data Included
BRECKENRIDGE, COLO. -- Serious consideration should be given to universal ultrasound screening of newborns for signs of developmental dysplasia of the ...
Meyer Dysplasia as a Cause of Hip Pain in Children
Meyer dysplasia is a rare condition that affects the femoral epiphysis in young children. This developmental disorder of the hip is characterized by ...
Screening for Developmental Dysplasia of the Hip
Screening programs relying primarily on physical examination techniques for the early detection and treatment of congenital hip abnormalities have not ...
significance of at-risk factors in ultrasound surveillance of developmental dysplasia of the hip, The
A TEN-YEAR PROSPECTIVE STUDY Of the 34 723 infants born between 1 June 1992 and 31 May 2002, the hips of 2578 with clinical instability or at-risk factors ...
Three-dimensional anatomy of the hip in osteoarthritis after developmental dysplasia
Using radiography and computer tomography (CT) we studied the morphology of 83 hips in 69 Caucasian adults with osteoarthritis secondary to developmental ...
Outcome of revision hip arthroplasty in patients with a previous total hip replacement for developmental dysplasia of the hip
Our aim was to determine if the height of the cup, lateralisation or the abduction angle correlated with functional outcome or survivorship in revision ...

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