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Limb sparing achieved by ray amputation for osteosarcoma of the left third metacarpal bone in a labrador
  1. Jon L Hall1 and
  2. Sarah L Mason2
  1. 1 Department of Veterinary Medicine, University of Edinburgh Royal Dick School of Veterinary Studies, Edinburgh, UK
  2. 2 Department of Oncology, Southfields Veterinary Specialists, Basildon, UK
  1. Correspondence to Dr Jon L Hall; jon.hall{at}


A seven-year-old male neutered labrador weighing 35 kg with a two-week history of left forelimb lameness was diagnosed with osteosarcoma of the third metacarpal bone. No pulmonary metastases were detected and ray amputation (removal of the left third metacarpal bone and third phalanx en bloc) was performed. Circumferential sutures were placed around metacarpals II and IV to realign the adjacent bones and digits during the healing period. The dog received six cycles of single-agent carboplatin (300 mg/m2) postoperatively. Restaging nine months postoperatively revealed no evidence of metastasis or recurrence. Two years postoperatively, the dog has no evidence of complications or lameness. Thoracic limb amputation and postoperative adjunctive therapy are considered the gold standard treatment for appendicular osteosarcoma; however, an oncological compartment excision of this bone tumour was performed with similar outcome for the patient while preserving the limb.

  • neoplasia
  • dog
  • osteosarcoma
  • limb sparing
  • metacarpal
  • chemotherapy
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  • Contributors JLH was the primary surgeon and SLM was the primary oncologist treating the patient. Report preparation was equally shared according to their respective specialties.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data sharing statement No additional data are available.

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