A Study of Functional Outcome and Assessment of Role of Proximal Humerus Internal Locking System (Philos) Plating in Elderly Population with Proximal Humerus Fracture: A Case Series

Introduction: The purpose of the study was to assess the functional outcome of proximal humerus fractures (2 part, 3 part, and 4 part) managed with a proximal humerus internal locking system (PHILOS). Materials and Methods: This retrospective study included 27 cases of proximal humerus fractures managed surgically between February 2021 and February 2022 with a proximal humerus internal locking system (PHILOS) plate. NEER classification was used to categorize the fractures. Functional assessment was done using Constant Murley’s shoulder score and disabilities of the arm, shoulder, and hand. Subjects having metastatic and pathological fractures; associated fractures in the ipsilateral limb; having major nerve injury and cases of open fracture were excluded from this study. Results: The mean age was 55.63 ± 10.37 years. Of the total 27 cases of proximal humerus fractures, functional outcome was excellent (score 85–100) in 3.70% (n = 1) cases, good (score 71–85) in 81.49% (n = 22) cases, moderate (score 56–70) in 14.81% (n = 4), and poor (score 0–55) in none of the (n = 0) cases. In 92.60% of cases, follow-up showed no complications. Varus collapse and subacromial impingement, both occurring in 3.70% (n = 1) of the subjects, were noted in this study. Conclusion: Based on the findings of this retrospective study, it can be opined that PHILOS plating appears to be a secure option for proximal humerus fracture cases. It offers solid fixation, prompt mobilization, and excellent functional outcomes as observed in this study. In addition, very few post-operative complication rates again support our conclusion. Keywords: PHILOS, proximal humerus fracture, elderly individuals, disabilities of the arm, shoulder, and hand score, osteosynthesis.