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Canine Achondroplasia

Achondroplasia is variously referred by orthopedic specialists as asachondroplastic dwarfism, chondrodystrophia fetalis, chondrodystrophy syndrome, congenital osteosclerosis, dwarf, and osteosclerosis congenita. These various definitions mean the same abnormal development of bone from cartilage.1 Offspring can look normal at birth and weaning, but at the age of 2.5 to 4 months the longitudinal growth of the spine and leg bones can retard in the dwarfs compared with the normal littermates. Most dwarfs perform well, even in the field.5 Canine achondroplasia can be a mild condition, with slightly bowing or simply short legs, causing no discomfort to the animal. Severe achondroplasia requires extensive orthopedic surgery to both alleviate pain and allow the dog to function normally. This surgery, most frequently an ulna, or radius surgery, is generally performed at one year of age when bone growth is nearly complete. Surgical success is variable.

References

  1. Sharon L. Vanderlip D.V.M. The Shih Tzu Handbook, Barron's Educational Series 2005, p. 120
  2. Clair A Francomano, MD, FACMG, Achondroplasia, Jan. 2006, gentests.org
  3. Brian Funaki, MD, Achondroplasia, CHORUS, September 2006
  4. Achondroplasia, Genetic Home Reference, December 14, 2007
  5. Hanssen I, Falck G, Grammeltvedt AT, Haug E, Isaksen CV. Hypochondroplastic dwarfism in the Irish setter, J Small Anim Pract. 1998 Jan;39(1):10-4.


Related Conditions

Achondroplasia

Acromegaly

Ankylosing Spondylitis

Arthritis

Breed Predisposition to Panosteitis

Bursitis

Cervical Vertebral Instability

Canine Dermatomyositis

Canine X-linked Muscular Dystrophy

Craniomandibular Osteopathy

Dysplasia Epiphysealis Hemimelica

Ectromelia

Exostosis

Fibrodysplasia ossificans

Genu valgum

Hemimelia

Hemivertebrae

Hip Dysplasia

Intervertebral Disc Disease

Juvenile Osteoporosis

Legg-Calve-Perthes Disease

Masticatory Muscle Myositis

Musculoskeletal Disorders

Mitochondrial Myopathy

Myositis

Osteoarthritis

Osteochondrodysplasia

Osteochondrosis

Osteogenesis Imperfecta

Osteomyelitis

Panosteitis

Patellar Luxation

Prognathism

Pseudoachondroplastic Dysplasia

Rhabdomyolysis

Scoliosis

Spondylosis deformans

Tracheal Collapse

Transitional Vertebral Segments

Musculoskeletal Diseases






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