Functional outcome of intramedullary interlocking nail in the treatment of Shaft humerus fractures - a prospective study

Abstract

INTRODUCTION : Humerus shaft fractures are common orthopedic injuries, often resulting from trauma and the choice of treatment remains a topic of debate. Intramedullary interlocking nailing is a minimally invasive surgical technique that provides excellent bio- mechanical stability, particularly in diaphyseal fractures and facilitates early mobilization. This prospective study evaluates the functional outcomes of intramedullary interlocking nailing in the treatment of Shaft humerus fractures. OBJECTIVES : - To examine the functional results of intramedullary interlocking nails used to treat closed shaft humerus fractures. - To study the common complications associated with humerus nailing, such as non- union rate, infection, rotator cuff dysfunction and need for secondary procedures.

MATERIALS AND METHODS : The present study involved 40 cases with shaft humerus fractures treated with Intramedullary Interlocking nails. Patient were followed up for minimum of 6 months. Inclusion criteria were patients of age above 18 years and below 70 years with closed and segmental fractures. Functional outcome evaluation was done using DASH score. Radio logical union, intra-operative data, and complications were documented.

RESULTS : The study observed fracture union in 95% of cases, with an average time to union of 10-16weeks.At the final follow-up, the average mean DASH score was 16.51, indicating adequate elbow, arm, and shoulder function. Out of 40 patients, 6(15%) patients had excellent functional outcomes,26(65%) patients had good results, 6(15%) patients had fair outcome and with 5% having poor outcome which needed secondary procedures for union.

CONCLUSION : Intramedullary interlocking nailing is an effective and reliable method for managing shaft humerus fractures, providing excellent functional outcomes and high rates of fracture union and acceptable complications. Early mobilization and minimal surgical morbidity make it a good option. Intamedullary interlocking nailing for humerus shaft fractures results in significant functional recovery, as evidenced by improved DASH scores at 6 months. This highlights its efficacy as a minimally invasive treatment option with favorable long-term outcomes.