Abstract: Humeral fracture account for 5-8% of all fractures in adults. Most of these fractures tend to heal; however, up to 33 % will develop non-union. Humeral fracture non-union causes major functional disability, chronic pain and reduced quality of life. Data on the functional outcomes of operational management of humeral fracture non-union at Moi Teaching and Referral Hospital (MTRH) Eldoret are scanty. This study intends to close the knowledge gap and advance the field.