J Zoo Wildl Med.: Holding power of three different pin designs in the femur and ulna of the common buzzard (Buteo buteo).
Fractures (Care and treatment)
Lopez Garcia, M.
Lopez Beceiro, A.M.
|Publication:||Name: Journal of Avian Medicine and Surgery Publisher: Association of Avian Veterinarians Audience: Academic Format: Magazine/Journal Subject: Health Copyright: COPYRIGHT 2012 Association of Avian Veterinarians ISSN: 1082-6742|
|Issue:||Date: March, 2012 Source Volume: 26 Source Issue: 1|
|Product:||SIC Code: 3841 Surgical and medical instruments|
|Geographic:||Geographic Scope: United States Geographic Code: 1USA United States|
External skeletal fixation is generally considered the best
stabilization technique for immobilizing avian long-bone fractures, but
one of its major complications is the failure of bone fixation pin
interface or the loss of holding power. Consequently, this study is
aimed at elucidating which pin design offers more pull-out strength in
certain bones of the common buzzard (Buteo buteo). To achieve this
objective, 3 pin designs (a smooth design and 2 negative profile
threaded designs, with different thread pitch) were placed in 5
positions along the femur and ulna of the common buzzard. The pin
pull-out strength was measured with the purpose of comparing medullary
and pneumatic bones, insertion sites, and pin designs. Threaded pins
with a negative profile showed greater holding power than smooth pins (P
< .05). When comparing holding power between the ulna and femur, no
differences were found for smooth pins, whereas threaded pins showed
more pull-out strength in the ulna than in the femur (P < .05). There
were no differences observed related to pin location along the same bone
when considering the same pin type. These results suggest that negative
profile threaded pins have more holding power than smooth pins and that
pneumatic bones provide less pull-out strength to negative profile
threaded pins than medullary bones.
|Gale Copyright:||Copyright 2012 Gale, Cengage Learning. All rights reserved.|