Heterotopic vascularized growth plate transfer in juvenile dogs

✍ Scribed by Mitsunori Shigetomi; Professor Wayne A. Morrison; Kevin C. O'Loughlin; Kazuhiro Sakai; Noriyuki Kuwata; Ichiro Ohta; Peter G. Hayward; John V. Hurley; Bernard McC. O'Brien

• Book ID: 102948006
• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 715 KB
• Volume: 15
• Category: Article
• ISSN: 0738-1085
• DOI: 10.1002/micr.1920151014

✦ Synopsis

Abstract

Prior animal studies of vascularized epiphyseal transfers placed growth plates in 2 bone systems where the independent growth of epiphyses and their response to altered stresses has been difficult to assess. This study assessed growth of vascularized ulnar epiphyses transferred to the ipsilateral humerus of 12‐week‐old puppies. Growth was permitted by a specially designed extensible plate. Control groups showed that humeral dissection, osteotomy and ostectomy alone do not stimulate growth. In 4 puppies initial growth of the transferred epiphysis was seen but late collapse and formation of bridging callus occurred so that overall humeral length at maturity was not significantly different from control humeri. Physical forces inherent in heterotopic transfer may preclude long term growth of transferred epiphyses particularly in sites of higher relative load. The extensible plate used here may be a useful device in the fixation of transferred epiphyses with growth potential. © 1994 Wiley‐Liss, Inc.