Reliable evidence on the effectiveness of NPWT is scarce. Tentative evidence indicates that the effectiveness of NPWT is at least as good as or better than current local treatment for wounds. The need for large high-quality randomised studies is apparent.

Osteomyelitis is an infectious process in bone that occasionally leads to bone destruction. Traditionally, the surgical treatment procedure is performed in combination with systemic and local antibiotics as a two-stage procedure that uses autograft or allograft bone for filling of the cavitary defect. Bioactive glass (BAG-S53P4) is a bone substitute with proven antibacterial and bone bonding properties.One hundred and sixteen patients who had verified chronic osteomyelitis was treated using BAG-S53P4 as part of the treatment. Most of the patients had previously undergone numerous procedures, sometimes for decades. A register of patient data obtained from 11 centers from Finland, Italy, the Netherlands, Germany, Azerbaijan and Poland was set-up and continuously maintained at Helsinki University Central Hospital.The location of the osteomyelitis was mainly in the tibia followed by the femur and then the calcaneus. The median age of the patients was 48 years (15-87). The patients were either treated according to a one-stage procedure without local antibiotics (85 %) or by a two-stage procedure using antibiotic beads in the first procedure (15 %). The minimum follow-up was 1 year (12-95 months, median 31).The cure rate was 104/116, the total success rate 90 % and most of the patients showed a rapid recovery.The study shows that (BAG-S53P4) can be used in a one-stage procedure in treatment of osteomyelitis with excellent results.

The original chapter was corrected. Please find below the summary of the corrections made: Author's name "Arnold J. Suda" was misspelt as Arnold Suda which has been corrected in this version. Author's name "Carlo L. Romanò" was misspelt as Carlo Romano which has been corrected in this version. Affiliations of authors were missing in the previous version. The affiliations have now been included as listed below.

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