الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Humeral shaft fractures account for approximately 3% of all orthopedic injuries. In the last few years incidence of these fractures has increased as a result of the higher prevalence of road traffic and occupational accidents, resulting in a significant burden to society from lost productivity. This study involved 21 patients with humeral shaft fractures that treated with MIPO technique. The patients were admitted to the orthopedic department Tanta University Hospital during the period from February 2020 to February 2021, with follow up period of 6-12 months. All items of information concerning each patient were collected and recorded using the patient information sheet. Patients were examined to determine their general condition and presence of any medical disorders and other associated injuries. Preoperative serological examination (Blood count, Kidney and Liver function tests, prothrombin time and activity and Fasting blood sugar) and X-Rays (plain X-ray AP and lateral views of the injured humerus showing shoulder and elbow joints). In this study, age ranges between (18-73) years. Seventeen males (81.0%) and four females (19.0%) were injured. The commonest mechanism of injury was indirect trauma e.g., road traffic accident and falling from height (71.4%), while direct trauma was (28.6%). The classification of the humeral fracture according to AO was 12-B subtypes (61.9%) and the 12-C (38.1%) subtype, twelve 12 (57.1%) patients were non-smokers and 9 (42.9%) patients were smokers. Intra operative blood loss range (70-120 ml) with mean value 90.95 ± 21.43 and operative time (90-120 min) with mean value 101.9 ± 12.89 All patients were assessed radiologically by X rays and clinically using Q-DASH score, the mean follow up was 8.2 months. Thirteen cases had solid union in up to 14 weeks, seven cases had their union in more than 14 weeks and one case had nonunion 24 weeks post-operatively. According to Q-DASH score, the functional outcome was satisfactory in (85.7 %). The functional result was significantly affected by smoking, duration of union, type of the fracture, presence of complication and associated medical problems. On studying the post-operative complications, we had two cases of superficial wound infection managed by oral antibiotic and frequent dressing, one case of radial nerve palsy underwent revision and exploration of the radial nerve that was recovered by close follow up and one case had non-union.