Congenital deformity of the paw in a captive tiger: case report

Rahal, Sheila Canevese; Volpi, Reinaldo dos Santos; Teixeira, Carlos Roberto; Machado, Vânia Maria Vasconcelos; Soares, Guilherme D. P.; Neto, C. Ramires; Linn, Kathleen

doi:10.1186/1746-6148-8-98

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…This is the first detailed study of a tetrapod limb expressing distal autopodial clefting; no such descriptive study has been performed on humans or mouse laboratory models with similar phenotypes. While case studies exist for humans and in the veterinary literature (reviewed in Duijf et al, ; Harasen, ; Rahal et al, ), these descriptions are primarily on the osteology and reconstructive approaches and lack any information about musculature.…”

Section: Discussionmentioning

confidence: 99%

Comparative musculoskeletal anatomy of chameleon limbs, with implications for the evolution of arboreal locomotion in lizards and for teratology

Molnár

Díaz

Skorka

et al. 2017

Journal of Morphology

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Chameleon species have recently been adopted as models for evo-devo and macroevolutionary processes. However, most anatomical and developmental studies of chameleons focus on the skeleton, and information about their soft tissues is scarce. Here, we provide a detailed morphological description based on contrast enhanced micro-CT scans and dissections of the adult phenotype of all the forelimb and hindlimb muscles of the Veiled Chameleon (Chamaeleo calyptratus) and compare these muscles with those of other chameleons and lizards. We found the appendicular muscle anatomy of chameleons to be surprisingly conservative considering the remarkable structural and functional modifications of the limb skeleton, particularly the distal limb regions. For instance, the zygodactyl autopodia of chameleons are unique among tetrapods, and the carpals and tarsals are highly modified in shape and number. However, most of the muscles usually present in the manus and pes of other lizards are present in the same configuration in chameleons. The most obvious muscular features related to the peculiar opposable autopodia of chameleons are: (1) presence of broad, V-shaped plantar and palmar aponeuroses, and absence of intermetacarpales and intermetatarsales, between the digits separated by the cleft in each autopod; (2) oblique orientation of the superficial short flexors originating from these aponeuroses, which may allow these muscles to act as powerful adductors of the "super-digits"; and (3) well-developed abductor digiti minimi muscles and abductor pollicis/hallucis brevis muscles, which may act as powerful abductors of the "super-digits."

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Section: Discussionmentioning

confidence: 99%

Comparative musculoskeletal anatomy of chameleon limbs, with implications for the evolution of arboreal locomotion in lizards and for teratology

Molnár

Díaz

Skorka

et al. 2017

Journal of Morphology

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“…Up to now, two bilateral cases have been presented (3,4). The disorder has been seen in many mammal species such as dogs (11), cats (20), foals (1), sheep (17), calves (18), primates (5), tigers (16), and amphibians (10). In humans, it is frequently seen with tibial aplasia, craniofacial defects (cleft palate), and urogenital anomalies (13).…”

Section: Introductionmentioning

confidence: 99%

2 yaşlı melez ırk bir köpekte ektrodaktili olgusu

Karsli

Bakici

2021

Veteriner Hekimler Derneği Dergisi

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Ectrodactyly is a rare anomaly seen in the appendicular skeleton and characterized by a cleft or split between bone and soft tissue in the distal regions of the extremities. Ectrodactyly may be associated with the absence and hypoplasia of several carpal-metacarpal bones, phalanx duplication, or metacarpal synostosis. In this case report, a 2-years-old mixed breed male dog was presented withhold up the left forelimb and inspectional abnormality with a cleft. In the radiographic images, it was observed that the fourth phalanx and the fourth distal carpal bone were absent in the related extremity, the cleft extended up to the carpal joint and there was an incongruity between the radius and ulna. The cleft between the metacarpal bones was stabilized using 2 lag screws and corticocancellous bone graft. The incongruity between the carpal joints was eliminated by pancarpal arthrodesis and ulna ostectomy was performed for the incongruity between radius and ulna. It has been observed that postoperative physical therapy exercises with correlated methods have positive long-term results in the related extremity.

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“…The disorder has been reported in many of mammalian species such as dogs (3), cats (22), sheep (20), cattle (13), primates (16), humans (21), and tiger (19). In humans the condition can also be seen in combination with ectodermal dysplasia or cleft palate and main reason is usually genetic (9).…”

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confidence: 99%

Surgical management of ectrodactyly in a Turkish Kangal dog

Yardımcı¹,

Önyay²

2017

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Summary:Ectrodactyly is an exceptional congenital disorder which is seen at the distal part of the limbs and characterized with longitudinal bony and soft tissue clefts. These clefts can include digits, metacarpal bones, carpal joint or radius-ulna. A male, 18 week-old, Turkish Kangal dog was presented with the right forelimb lameness and inspectional abnormality with a long and wide cleft starting from the distal manus to the carpo-metacarpal joint. The long cleft between metacarpal bones was fixed with two lag screws after filling the gap with corticocancellous bone block and fusion podoplasty. Short term clinical results were favourable following the surgery, but long term clinical outcome was less favourable because the dog revealed mild lameness due to the erosion of skin surrounding the digital pads. Finally, this problem was solved by using pad protectors when walking on rough grounds.Keywords: Congenital anomaly, dog, ectrodactyly, fusion podoplasty. Kangal ırkı bir köpekte ektrodaktili'nin cerrahi sağaltımıÖzet: Ektrodaktili, bacağın distal kısmındaki yumuşak ve kemik dokuda uzunlamasına yarık ile karakterize, ender görülen konjenital bir hastalıktır. Bu yarık; parmakları, metakarpal kemikleri, karpal eklemi ve radius ulna'yı da kapsayabilir. Dört buçuk aylık, Kangal ırkı, erkek bir köpek sağ ön ayağında topallık ve dış bakıda belirlenebilen distalden başlayan ve karpometakarpal ekleme kadar uzanan, uzun ve geniş bir yarık şikayeti ile getirildi. Metakarpal kemikler arasındaki geniş yarık, kortikokansellöz blok kemik grefti ve füzyon podoplastiden sonra iki lag vidası ile stabilize edildi. Operasyonu takiben kısa dönem sonuçları olumlu iken, uzun dönem sonuçlarına bakıldığında, parmakların taban yastıklarının etrafındaki derinin erozyonundan dolayı hafif topallık gözlendi. Sonuç olarak bu problem de sert zeminde yapılan yürüyüşlerde koruyucu ped uygulaması ile çözüldü. Anahtar sözcükler: Ektrodaktili, füzyon podoplasti, konjenital anomali, köpek.

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Congenital deformity of the paw in a captive tiger: case report

Cited by 4 publications

References 9 publications

Comparative musculoskeletal anatomy of chameleon limbs, with implications for the evolution of arboreal locomotion in lizards and for teratology

Comparative musculoskeletal anatomy of chameleon limbs, with implications for the evolution of arboreal locomotion in lizards and for teratology

2 yaşlı melez ırk bir köpekte ektrodaktili olgusu

Surgical management of ectrodactyly in a Turkish Kangal dog

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