1. Successful nonoperative management of chronic osteoarthritis pain of the knee: safety and efficacy of retreatment with intra-articular hyaluronans 
Mark Pagnano, M.D., Geoffrey Westrich, M.D. 
Osteoarthritis and Cartilage 
Volume 13, Issue 9, Pages (September 2005)
DOI: /j.joca
Copyright © 2005 OsteoArthritis Research Society International Terms and Conditions

2. Fig. 1
Visual analog scale (VAS) pain scores (0–100) after two courses of five weekly injections of sodium hyaluronate (MW 500–730kDa) in a retrospective survey of 52 patients with osteoarthritis of the knee38. All patients had followed a standard assessment protocol, and the mean interval between cycles 1 and 2 was 11.2 months.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2005 OsteoArthritis Research Society International Terms and Conditions