Two randomised, controlled trials have been reported on Granulox. In a first study (n=28), Arenberger et al (2011) showed 93% healing at 6 months with Granulox and 7% without in chronic lower-limb wounds. In a second study over 13 weeks by Arenbergerova et al (2013), the medical efficacy of a combination therapy plus Granulox was compared with therapy without Granulox. It found a 53% size reduction with Granulox versus 21% worsening in the standard care group. Granulox was also examined comparatively with traditional treatment concepts (conventional dry therapy and hydroactive therapy) by Von Eiff (2013). It was found that conventional dry treatment took on average 301 days until wound closure. Hydroactive therapy took 91 days and combination therapy (which included Granulox) took 60 days. No studies have yet been published into pressure ulcers in this area.