A BONE CEMENT

摘要

A bone cement comprises a zinc-based glass and polyalkenoate acid. In addition, the cement comprises a controlled amount of tri-sodium citrate (Na3C6HsO7) ("TSC"). The cement has enhanced rheology without negatively impacting on the mechanical properties. Controlled addition of TSC significantly improves the rheology of the bone cements, increasing working and setting times (illustrated in Fig. 1). For three formulations of the working time can be adjusted from less than 50 seconds to almost 120 seconds; concomitantly working times improve from 58 seconds to duration in excess of 300s.