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Perosomus elumbis in a day old udah neonate lamb in Sokoto, Nigeria

Author(s): A. Bello | M.A. Umaru | M.S. Abubakar | S. Buhari | Umar A.A.

Journal: Scientific Journal of Zoology
ISSN 2322-293X

Volume: 2;
Issue: 1;
Start page: 12;
Date: 2013;
Original page

Keywords: Perosomus elumbis | Congenital | Ankylosis | Hypoplasia | Udah lamb

Perosomus elumbis is a rare congenital anomaly of unknown aetiology. It is characterized by errors of morphogenesis resulting in multi-organs malformations that produce a deformity of the caudal one third of the foetus. Spinal and pelvic malformations are evident, structural anomalies such as arthrogryposis of the hind limbs, ankylosis of joints, with associated malformations of the musculature. This is a case of a new born Uda lamb, with the Chief complaint of inability to stand two hours after lambing. History revealed that the dam delivered them as twins, one of which was normal. On clinical examination the lamb was recumbent but alert. The fore limbs were well developed and appeared normal. The lumbo-sacral area was excessively narrow, with a skin fold attaching the crus (Tibia and Fibula). There was an ankylosis of the stifle and hock joint and were maintained in a flexed position. The response to pin prick on the hind limb was poor. However, both anal and vulval openings were patent. Radiography revealed hypoplasia of the lumbar vertebrae, pelvic girdle, the iliac wing, the ischium and the pubis. There is a convergence of the lschial arches towards the public symphisis; the wing of the ischium is absent bilaterally. There is an ankylosis of the stifle and tarsal joints in flexed position. However, all the bones of the hind limbs are present.

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