The principle of the minimally invasive technique is to implant specific bony plate which is fixed across fractures via small incisions of the skin, muscle, and periosteum. The aim of the study was to find the functional outcomes in patients treated with proximal humerus fractures with a minimally invasive technique using locking compression plates. Methods: The cross-sectional study was conducted in the Department of Orthopedics, Prathima Institute of Medical Sciences, Nagunur, Karimnagar. A total of 39 patients were included in the study. The patients were selected using the inclusion criteria and they underwent operations under general anesthesia followed by early mobilization and follow up at the intervals of 3 months, 6 months and 12 months to evaluate functional outcomes according to Constant-Murley criteria. Results: The fractures were classified according to the NEER/AO/ASIF classification of fractures of the humerus. The type A fractures were found in 20 out of 39 patients 51.28% A1 fractures were in 8 patients A2 in 5 patients and A3 in 7 patients and 19 fractures were type B 48.72% and B1 and B3 had in 7 patients each and B2 had 5 patients. The mean Constant-Murley score was 89.25 points at the end of one year follow up in 2 part fractures. According to Constant-Murley score, 85% had an excellent outcome, 10% had a good functional outcome and 5% had moderate outcomes. All the fractures were united on an average time of 19 weeks (14-24). In the Three-part fractures, the average Constant-Murley score at the end of one year was 81 points. The Constant-Murley score showed 78.94% had excellent outcomes, 15% had a good functional outcome and 5.26% had a moderate outcome. Conclusion: Within the limitation of the present study it can be concluded that minimal invasive plate osteosynthesis with locking compression plate is a good technique for the treatment of proximal humerus fractures. It provides good stability, functional outcomes and minimal post-operative complications