Clementi D, et al. - Authors compared the effectiveness of intra-articular injections of an ultra-high molecular weight viscosupplement (UHMW-HA, Fermathron S) with a medium molecular weight hyaluronan (MMW-HA, Hyalubrix 60) in hip osteoarthritis (OA). Results demonstrated safety and efficacy of UHMW-HA for hip osteoarthritis. They noted an equal effectiveness of a single dose of UHMW-HA as has been seen with 2 doses of MMW-HA, thereby, resulting in similar reductions of pain and disability.