 The research presented in this paper investigated the use of coffee husks as a reinforcement material for polymethyl methacrylate, PMMA, composites. The study found that adding coffee husks to PMMA composites improved their mechanical and tribological properties, making them more suitable for use in artificial hip joints. Additionally, the authors constructed a finite element model to simulate the behavior of the composites under human loading conditions, which confirmed the positive effects of the coffee husks on the composites' performance. This article was authored by Ahmed Foley, Ibrahim Al Nasser, Abdulaziz K. Asafin and others.