Arthroscopic removal of a solitary osteochondroma interfering with the podotrochlear apparatus in a foal

Abstract Objective To report the diagnostics, surgical treatment, and outcome of a juvenile foal with solitary osteochondroma (SO) interfering with the podotrochlear apparatus. Study design Case report Animal One 36‐day‐old Arabian colt. Methods Clinical, radiographic, ultrasonographic, computed tomographic, and histopathologic examinations were required to characterize and treat an SO located at the palmar aspect of the diaphysis of the second phalanx of the left forelimb. This SO caused severe distal interphalangeal joint (DIPJ) inflammation, marked interference with the podotrochlear apparatus, and associated lameness. Results Despite the small size of the foal's foot, complete resection of the SO was possible via palmar DIPJ arthroscopy by using motorized equipment. Full resolution of the lameness was achieved within 3 months of surgery. Conclusion Atypical SO located on the palmar aspect of the second phalanx can cause marked nonseptic inflammation of the DIPJ and interference with the podotrochlear apparatus and should be considered among the differential diagnoses for severe lameness in juvenile foals. Arthroscopic resection of the SO led to an excellent outcome.

[1]  R. Tucker.  What is an osteochondroma? , 2020, Equine Veterinary Education.

[2]  S. Messier,et al.  Effect of Presurgical Iodine-Based Disinfection on Bacterial Colonization of the Equine Peripodal Region. , 2015, Veterinary surgery : VS.

[3]  I. Wright,et al.  Clinical, radiological and ultrasonographic features, treatment and outcome in 22 horses with caudal distal radial osteochondromata. , 2012, Equine veterinary journal.

[4]  J. Caron,et al.  Comparison of conventional and alternative arthroscopic approaches to the palmar/plantar pouch of the equine distal interphalangeal joint. , 2011, Equine veterinary journal.

[5]  M. Altay,et al.  Manifestations and management of osteochondromas: a retrospective analysis of 382 patients. , 2006, Acta orthopaedica Belgica.

[6]  A. Rijkenhuizen,et al.  Endoscopic removal of osteochondroma at the caudodistal aspect of the radius: an evaluation in 4 cases , 2001 .

[7]  D J Flemming,et al.  Imaging of osteochondroma: variants and complications with radiologic-pathologic correlation. , 2000, Radiographics : a review publication of the Radiological Society of North America, Inc.

[8]  B. Berridge,et al.  A Digital Osteochondroma as the Cause of Lameness in a Foal , 1998, Veterinary and Comparative Orthopaedics and Traumatology.

[9]  J. Callanan,et al.  Congenital solitary osteochondroma affecting the tarsus in a filly foal , 1996 .

[10]  R. Welch,et al.  Arthroscopic approach and intra-articular anatomy of the palmaroproximal or plantaroproximal aspect of distal interphalangeal joints. , 1992, Veterinary surgery : VS.

[11]  C. Patton,et al.  Solitary osteochondroma of the radius in three horses. , 1988, Journal of the American Veterinary Medical Association.

[12]  J. L. Shupe,et al.  Hereditary multiple exostoses. Hereditary multiple exostoses in horses. , 1981, The American journal of pathology.

[13]  R. L. Lundvall.  Periosteal new bone formation of the radius as a cause of lameness in two horses. , 1976, Journal of the American Veterinary Medical Association.

[14]  J. L. Shupe,et al.  Hereditary multiple exostosis. A comparative genetic evaluation in man and horses. , 1975, The Journal of heredity.

[15]  M. Emmerson,et al.  The Age and Manner of Epiphyseal Closure in the Forelegs of Two Arabian Foals1 , 1966 .