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Subject: Veterinary Surgery and Radiology × End date: 2009 × Start date: 2009 × Type: Thesis ×
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    ThesisItemOpen Access
    EVALUATION OF LOCKING COMPRESSION PLATE AND THE CONVENTIONAL LIMITED CONTACT DYNAMIC COMPRESSION PLATE FIXATION TECHNIQUES FOR FEMORAL FRACTURE REPAIR IN DOGS
    (SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI - 517 502. (A.P.) INDIA, 2009-01) MANOHAR, P; DHANA LAKSHMI, N(MAJOR); SURESH KUMAR, R .V.; CHANDRASEKAR RAO, T.S
    ABSTRACT : Twelve dogs presented to the college hospital with unstable femoral diaphyseal fractures which were diagnosed by clinical signs, orthopaedic examination and survey radiography were taken as clinical material for the study. The breed, age, sex wise incidence, cause and type of fracture were studied. The dogs were equally divided into group I and II and the fractures were stabilized with selected indigenously made conventional Limited Contact-Dynamic Compression Plate (LC-DCP) along with normal DCP screws (Group I) and new Locking compression plate (LCP) along with locking screws (Group II) following standard AO/ASIF procedures. Selection of appropriate size of plate and screws according to age, body weight and type of fracture provided good fracture stability. In both the groups, no technical difficulties were observed while application of LC - DCP and LCP. The outcome of fracture stabilization and healing was evaluated with postoperative lameness grading, radiography and biochemical analysis. In both the groups, stabilization showed good clinical outcome with complete normal limb usage within seven weeks except in one case of group I where fixation failure with screw loosening and fragments separation was recorded by second week. In this case, the fracture was again stabilized with IMP and LC-DCP which was healed later. In group II, no implant failure or screw loosening was observed except in one case there was slight bending of plate without much disturbance to alignment. The overall average healing time in both the groups was 6-12 weeks. The fractures showed radiographically excellent postoperative healing of cortical union, absence of fracture lines with limited and also bridging callus. Statistical analysis revealed a highly significant difference (P < 0.01) in increase of serum alkaline phosphatase and calcium in group II when compared to group I whereas non significant difference was observed in phosphorus levels. Based on present study, it was concluded that both conventional LC-DCP and LCP were good for stabilization of unstable femoral fractures for early limb ambulance and excellent healing. However the application of LCP was found easier than LC-DCP with advantages like self tapping locking screws, less precontouring of plate and combi-hole for both fixed and angle fixation of screws. Although using LCP with locking screws was two times more expensive than using the LC-DCP with cortical screws, this LCP was more advantageous for offering excellent stabilization and early return to function in comminuted diaphyseal femoral fracture repair than LC-DCP.