The feline humerus

S. J. Langley-Hobbs; M. Straw

doi:10.1055/s-0038-1632922

Veterinary and Comparative Orthopaedics and Traumatology, Table of Contents

Vet Comp Orthop Traumatol 2005; 18(01): 01-06
DOI: 10.1055/s-0038-1632922

Review Article

Schattauer GmbH

The feline humerus

An anatomical study with relevance to external skeletal fixator and intramedullary pin placement

Authors

S. J. Langley-Hobbs

¹The Queens Veterinary School Hospital, The Department of Veterinary Medicine, University of Cambridge, Cambridge, U.K.
M. Straw

²Beechwood Veterinary Hospital, Bessacarr, Doncaster, South Yorkshire, U.K.

Abstract

Summary

The humeri of eleven feline cadavers were dissected and safe anatomical areas for placing external skeletal fixator pins were determined. Relevant measurements taken of the humeral condyle enabled a determination of a safe pin diameter range of 1.5 to 2.2 mm for transcondylar pins. Further anatomical measurements allowed recommendations to be made to angle pins in the distal humerus in a distolateral proximomedial direction so that the ESF pin penetrates the far cortex at least 20 mm proximal to the medial epicondyle in order to avoid pin penetration of the supracondylar foramen. Cross sections taken of the distal humerus revealed that passage of an IM pin into the medial aspect of the humeral condyle was possible in less than half the cases.

Keywords

Feline - humerus - external skeletal fixator - intramedullary pin

Full Text

References

References
1 Aron DN, Dewey CW. Application and postoperative management of external skeletal fixators. Vet Clin North Am Small Anim Pract 1992; 22 (1) 85.
2 Boyd JS. A colour atlas of clinical anatomy of the dog and cat. Bucks, UK: Wolfe Publishing Ltd; 1991: 98-147.
3 Done SH, Goody PC, Evans SA, et al. The dog and cat. Veterinary Anatomy 1996; 3: 10.8-10.15.
4 Dyce KM, Sack WO, Wensing CJG. Textbook of Veterinary Anatomy. Philadelphia: WB Saunders 1987; 81-4.
5 Egger EL. Complications of external fixation: A problem orientated approach. Vet Clin North Am Small Anim Pract 1991; 21 (4) 705-33.
6 Evans HE, Delahunta A. Miller's Guide to the dissection of the dog. Philadelphia: WB Saunders; 1988: 10-50.
7 Harari J. Complications of external skeletal fixation. Vet Clin of North Am Small Anim Pract 1992; 22 (1) 99-107.
8 Guerin SR, Lewis DD, Lanz OI. et al. Comminuted supracondylar humeral fractures repaired with a modified type I external skeletal fixator construct. J Small Anim Pract 1998; 39: 525-32.
9 Hudson LC, Hamilton WP. Atlas of feline anatomy for veterinarians. Philadelphia: WB Saunders; 1993: 60-63 96-97.
10 Klause SE, Schwarz PE, Egger EL, Piermattei DL. A modification of the unilateral type II external skeletal fixator configuration for primary and secondary support of supracondylar humeral and femoral fractures. Vet Comp Orthop Traumatol 1990; 3: 130-4.
11 Marti JM, Miller A. Delimitation of safe corridors for the insertion of external fixator pins in the dog 1: Hindlimb. J Small Anim Pract 1994; 35: 16-23.
12 Marti JM, Miller A. Delimitation of safe corridors for the insertion of external fixator pins in the dog 2: Forelimb. J Small Anim Pract 1994; 35: 78-85.
13 Matthiesen DT. Fractures ofthe humerus. VetClin North Am Small Anim Pract 1992; 22 (1) 12-123.
14 Smith RN. Fusion of ossification centres in the cat. J Small Anim Pract 1969; 1: 523.
15 Turner TM. Fractures of the bones of the front limb. In: Small animal orthopaedics. Olmstead ML. ed Missouri: Mosby-Year Book Inc.; 1995: 205-7.
16 Withrow SJ. Principles of intramedullary pinning and cerclage wiring. Proc AAHA 1980; 47: 351-62.