Introduction: Total hip arthroplasty (THA) is the treatment of choice in patients aged <30 yearssuffering from end-stage hip arthropathy. Aim: This systematic review aimed to determine the improvement in the functional outcomes among young patients (<30 years of age) who underwent THA. Methods:We searched a total of 7 electronic databases including PubMed, Embase, and Cochrane central using a comprehensive search strategy to retrieve the relevant articles. We undertook a meta-analysis using a random effect model to assess whether THA in patients aged less than 30 years resulted in significant functional improvement. The primary outcome of the study was an increase (change before & after THA) in Harris Hip Score. Results: A total of 17 articles (all case series) collectively representing the outcome among 751 patients (and 945 hips) were included in the review. The mean age of patients was 24.3 (range 12-30) years. The most common underlying indication for THA was Avascular necrosis (AVN) (39%). The mean difference between the HHS, at the last, follow-up visit and the pre-operative HHS was 42 (95% CI 37- 44; p-value <0.00001). Among 945 hips, 73 (7.2%) required revision. The annualized rate of revision was 0.86%.Conclusion: THA of all types resulted in significant functional improvement among young patients.