What if your next diabetic foot osteomyelitis case could include a tool that delivers high-local antibiotic concentrations and fills dead-space in the same step? For orthopaedic surgeons managing complex diabetic foot infections, STIMULAN® (calcium-sulfate beads) may offer exactly that — not as a silver bullet, but as a strategic adjunct.
Clinical context
Diabetic foot osteomyelitis (DFO) is a major challenge in orthopaedics — polymicrobial biofilms, impaired perfusion, dead-space after debridement, and high rates of recurrence complicate surgical success. Local antibiotic delivery has therefore emerged as an adjunctive strategy. (diabeticstudies.org)
What the Product offers
STIMULAN is a resorbable calcium-sulfate matrix that can be loaded intraoperatively with antibiotics selected per culture. It can fill bone voids or soft-tissue dead-space while eluting high local antibiotic concentrations. In vitro data show inhibition of polymicrobial diabetic foot infection strains with zones of inhibition of 15-40 mm using vancomycin/gentamicin loaded beads. (microbiologyresearch.org)
Evidence summary
A retrospective review of 19 patients with Wagner Grade 3-4 diabetic foot ulcer + osteomyelitis treated with STIMULAN reported 84% complete healing at 1-month and 0% amputations at 24 months. (Thieme)
A cohort study of diabetic osteo-articular infections treated with CaSO₄ beads achieved a 92% eradication rate but also reported 62% wound drainage as a safety issue. (PubMed)
A systematic review on local antibiotic delivery systems for DFO concluded that although healing rates appear adequate in case-series, evidence remains limited, especially for amputation-reduction or randomized data. (RCA Storage)
Key considerations for orthopaedic practice
Patient selection: STIMULAN should be considered when adequate surgical debridement is achieved and dead-space management is required.
Antibiotic loading: Culture-guided antibiotics must be selected for mixing; systemic therapy remains essential.
Dead-space management: Use STIMULAN to fill bone/soft tissue cavities created by debridement — it is not a substitute for surgical clearance.
Safety & drainage: Be aware of wound drainage—studies report rates of up to 60% in foot osteomyelitis settings. Monitoring and appropriate wound care are crucial. (PubMed)
Cost-effectiveness & long-term outcome: While promising, definitive data on limb salvage, recurrence prevention, and cost-benefit are still lacking.
Conclusion
For orthopaedic surgeons treating diabetic foot osteomyelitis, STIMULAN offers a biologically plausible, technically feasible adjunct: a resorbable antibiotic carrier that addresses dead-space and delivers high local antibiotic concentrations. The current data are encouraging but not definitive — STIMULAN should be integrated into multidisciplinary pathways rather than replacing standard surgical-medical care.
Selected References:
Chatzipapas C, Karaglani M, Tilkeridis K, Drosos GI. Local antibiotic delivery systems in diabetic foot osteomyelitis. Review of Diabetic Studies 2021. (RCA Storage)
Fletcher J, Porter R, Boulton Z, et al. In vitro efficacy of antibiotic loaded calcium sulfate beads (Stimulan®) against polymicrobial DFI communities. J Med Microbiol 2022. (microbiologyresearch.org)
Chon H.T.W., Hamish M., Kirupananthan P., et al. STIMULAN® antibiotic beads for the treatment of diabetic foot infection. Arab J Infectious Diseases 2021. (Thieme)
By Dr. Amany Adam — Clinical Pharmacist & Healthcare Portfolio Lead, AKSIA Healthcare
