Disorder - Ectrodactyly

Organ Systems Involved
Musculoskeletal

Alternative disorders described within LIDA

Elbow joint incongruity/luxation; Syndactyly (incomplete separation of interdigital clefts); Digital contracture

Alternative Names
Split hand/foot deformity; Lobster claw defect; Cleft hand; Oligodactyly; Hypodactyly; Appendicular skeletal dystosis

Presenting Signs

Ectrodactyly is an inherited disorder causing the bones in the front paws to develop abnormally. One or more sets of finger and wrist bones are absent or poorly developed, and those present may be joined. The gap that results gives the paw a claw-like appearance. The condition varies according to the degree of bone deformity. Signs can worsen over time as the limbs are used. Animals may be mildly lame or unable to place any weight on the affected leg. The affected limb is usually shorter than the normal limb and the paw may be turned upside down, leaving the animal to walk on the top-side of the paw. All reported instances in cats have occurred in the fore-legs and only on one side of the body.

Cats at Risk

There is no sex predilection but this condition has been reported to occur as part of several syndromes.

Treatment

Surgical: long-term outcome depends upon severity of the abnormality and time of diagnosis. Kittens with mild deformities may have the affected leg plastered until four to five months of age for support and to limit limb use. Severe cases may require surgical reconstruction or amputation. Affected cats should not be mated.

PubMed References
Ectrodactyly

Contributor
Natalie Adby