Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: General Orthopaedics
Abstract number: 26718
BONE LENGTHENING BY ILIZAROV TECHNIQUE: CAMPARISON OF
OSTEOINDUCTIVE EFFECT OF CANCELLOUS BONE AND BMP IN DOG
Maryam REZAGHOLI 1 , Seifollah DEHGHANI NAZHVANI 2
1 Department of Surgery, Zshiraz (IRAN), 2 Department of surgery, School of
Veterinary Mrdicine, Shiraz (IRAN)
The Ilizarov technique is commonly used for treatment of open and close fractures,
non unions, bone tumors and infections. In this study the Ilizarov technique was used
in combination with BMP and cancellous bone for bone lengthening in dog. 15 mix
breed dogs were used. They were anesthetized and the left radius and Ulna were
exposed and were cut transversely by osteotom. Two Ilizarov pins were installed at
each fragment end of the radius perpendicular to each other 2.5 cm apart. The pins
were connected to the Ilizarov rings using adaptors and the rings were connected to
each other by vertical bars using the same adaptors. The two fragments of bone
were pulled apart gradually using Dehdashti extender applied to the bars and rings,
so that the ideal gap made between two fragments ends was more than bone
diameter. The dogs were divided randomly into 3 groups: 1.Group one: No bone
treatment. 2. Group two: The fracture gap was filled with BMP. 3. Group three: The
fracture gap was filled with autogenous cancellous bone. They were evaluated
clinically, radiographically and biomechanically. Bone formation, callus formation and
union in the gap in 3 groups were not statistically significant which can be due to the
low number of the samples. In biomechanical evaluation the load was statistically
significant in BMP group compared to cancellous group, but both BMP and
cancellous groups were significantdifferent compared to the healthy bone. Although
Ilizarov technique has many advantages for long bone lengthening but it also has
many complications including: infection, fracture of the bone, deformity of the limb.
Therefore further study in this area is required for dogs.
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