COMPARATIVE EFFICACY OF TENSION BAND WIRE, DCP AND POP FOR THE TREATMENT OF OLECRANON AVULSION FRACTURE IN DOGS

Abstract

The treatment of avulsion fractures of the points of different bones which serve as the insertion of tendons, muscles and ligaments needs particular attention in order to enable these orthopedic patients to rehabilitate and ambulate normally. The main objective while treating these patients is to convert distracting forces of muscles into compressive forces. To achieve desired results, the procedures of tension band wire, compression plate and plaster of Paris applied on surgically avulsed Olecranon fracture, which gave us chance to ascertain the comparative efficacy of these techniques. A total number of 12 mongrel dogs divided into 3 groups Group A, Group B and Group C comprising 4 dogs each. In Group A the Olecranon of the dog surgically exposed and an avulsion transverse fracture is created by manual saw and fracture fragment is held in place by two Kirschner wires and Cerclage wire of 2mm in fashion of eight giving fracture site a proper strong compression. In Group B the surgically avulsed Olecranon fracture repaired using dynamic compression plate of 3.5mm 6 holes. In Group C Olecranon fracture created surgically but only external coaptation by POP done. All the dogs were kept in kennel cages for a period of sixteen weeks and evaluated on clinical and radiographic evidences. The analysis of the results indicates that tension band wire is a better choice for fixing the avulsed Olecranon with good callus formation and wound healing. Also studied comparison of Serum Calcium, Phosphorus and Alkaline phosphate values increased in first 10 days for all three groups but for Group A returned to normal on 60^th day with the proper callus formation and for Group B it took more than 60 days. For Group C the ALP values have no significance as there was no callus formation. It indicates that serum Alkaline Phosphatase can be a good prognostic indicator in the fracture healing of Olecranon avulsion fracture in adult dogs. Euthanasia was performed after the completion of experimental period.