Unicompartmental knee arthroplasty achieves greater flexion with no difference in functional outcome, quality of life, and satisfaction vs total knee arthroplasty in patients younger than 55 years. a propensity score-matched cohort analysis - Goh, G SH; Bin Abd Razak, H R; Tay, D KJ; Chia, S L; Lo, N N; Yeo, S J (J Arthroplasty, 2018)