Evaluation of Osteotomy Accuracy and Rotational and Angular Alignment for Cranial Closing Wedge Ostectomy Performed With and Without Alignment Aids

Autor: Michael J. Toscano, Terrance D. Emmerson, Neil J. Burton, Bruce A. Smith, Anna M. Groth, A. M. Wallace, Benito de la Puerta, Elena S. Addison, Tony Black
Rok vydání: 2014
Předmět:
Zdroj: Veterinary Surgery.
ISSN: 0161-3499
Popis: Objective: To (1) investigate the use of K-wires as alignment aids for cranial closing wedge ostectomy (CCWO) and (2) evaluate their effect on osteotomy accuracy and angular/rotational alignment. Study Design: Cadaveric study. Animals: Cadaveric pelvic limbs (n=20). Methods: CCWO was performed with and without alignment aids on 20 cadaveric pelvic limbs. CT scans were performed pre- and post-operatively to evaluate tibial torsion and valgus/varus deformity. Digital photographs of the ostectomized bone wedges were used to assess divergence of the 2 osteotomies, and the area of the medial and lateral aspects measured to assess osteotomy angulation within the dorsal plane. Results: Osteotomy divergence angle, the difference between the area of the medial and lateral aspects of the ostectomized wedges, and the difference between the pre- and post-operative angles of valgus/varus deformity were all significantly smaller for the alignment aid group. The difference in pre- and post-operative tibial torsion was not significantly different between groups. Conclusions: K-wires can be used successfully as alignment aids during CCWO and help to create a significantly more orthogonal osteotomy. This allows a significant reduction in the difference between the preoperative and postoperative angles of valgus or varus, which may reduce the risk of developing a clinically important iatrogenically introduced valgus/varus deformity postoperatively.
Databáze: OpenAIRE
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