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Peer-reviewed veterinary case report

Dog with shoulder muscle damage and stiffness seen on CT scans

By Mikkelsen, Marthe Aamodt & Ottesen, Nina·Published in Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·2021·Department of Companion Animal Clinical Sciences·View original on PubMed

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Original publication title: CT findings in a dog with subacute myopathy and later fibrotic contracture of the infraspinatus muscle.

Species:
dog

Plain-English summary

A 5-year-old Norwegian elkhound was brought to the vet because it suddenly started limping and had ongoing shoulder pain for three weeks. A special scan showed that the muscle in its shoulder was swollen and changing in appearance, indicating a problem. After two months, the dog developed a condition where the muscle became stiff and contracted, which is known as fibrotic contracture. The vet performed surgery to cut the affected muscle, and the biopsy confirmed the muscle had both atrophy and signs of healing.

People also search for: dog limping shoulder pain · Norwegian elkhound muscle problems · fibrotic contracture treatment for dogs

Abstract

A 5-year-old Norwegian elkhound was referred due to an acute onset of lameness and persistent shoulder pain over a period of 3 weeks. Computed tomography demonstrated an enlarged, hypoattenuating right infraspinatus muscle with peripheral contrast enhancement and a nonenhancing center, without concurrent lesions in superficial structures or bones. The right infraspinatus muscle showed progressive atrophy on consecutive CT studies. The dog developed clinical symptoms compatible with fibrotic infraspinatus contracture 2 months after the initial presentation, and was treated with infraspinatus tenotomy. Histopathological diagnoses based on intraoperative biopsy samples were fibrotic muscle atrophy and muscle hypertrophy with regeneration.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/30884008/