الفهرس 
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Abstract
The aim of the current study was to evaluate the results of displaced proximal ulnar fracture fixation using pre-contoured hook plate.
The study was done on thirty three patients admitted to El Hadara University Hospital from March 2009 to August 2011.
All patients on admission after there complete survey for exclusion of other associated pathology were assessed by complete history, clinical examination and radiological study.
The fractures were classified according to Mayo’s classification focused mainly on type II (stable simple and stable comminuted fractures) and type III (unstable simple and unstable comminuted fractures).
Fracture fixation was done through direct posterior approach with the patient is laterally positioned, after fracture reduction provisional fixation by two K-wires, small splitting of triceps over the tip of olecranon to allow application of the hook of plate, then long small set partially serrated applied in first hole to be inter-fragmentally through the fracture then the remaining holes are filled for completing the fixation. After removal of the K-wires and checking the stability closure of layers was done.
The operated limb was immobilized in an above elbow back slab for 2 weeks to allow incision healing, then all patients start mobilization after these 2 weeks to allow gaining full range of motion and avoid stiffness.
Among this study there were thirty three patients with mean age 45± 13.8 years with age range 24-80 years. Nineteen patients (57.6%) were left elbow affected and 14 patients (42.4%) were right elbow affected, 22 patients (66.7%) presented with direct trauma while 6 patients (18.2%) had indirect trauma and 5 patients (15.2%) had combined mechanism of trauma. This study included 11 patients (33.3%) with comminuted unstable fracture, 10 patients (30.3%) were stable non-comminuted fractures, 6 patients (18.2%) were stable comminuted fractures and 6 patients were unstable non-comminuted fractures. The occupation of these patients were 11 (33.3%) heavy manual workers, 7 (21.2%) moderate workers, 4 (12.1%) light workers and 11 (33.3%) house wives. The mean time lapsed before surgery was 4.7 days (range 2 days- 4 weeks). Postoperatively all patients were immobilized in above elbow back slab 26 patients (78.8%) kept in slab for 2 weeks, while 7 (21.2%) kept in slab 4 weeks.
At the end of follow up period which ranged from (6-15 months), with mean 10.3±1.82 months the results were assessed using a scoring system modified according to Murphy et al. which include assessment of pain, function, range of motion and radiological examination.
The final results at the end of the follow up period were 29 patients (87.9%) ended with satisfactory results (score 16 -19 points), while only 4 (12.1%) ended with unsatisfactory results wi