An Antibiotic-Releasing Bone Void Filling (ABVF) Putty for the Treatment of Osteomyelitis

The number of total joint replacements (TJR) is on the rise with a corresponding increase in the number of infected TJR, which necessitates revision surgeries. Current treatments with either non-biodegradable, antibiotic-releasing polymethylmethacrylate (PMMA) based bone cement, or systemic antibiotic after surgical debridement do not provide effective treatment due to fluctuating antibiotic levels at the site of infection. Here, we report a biodegradable, easy-to-use "press-fitting" antibiotic-releasing bone void filling (ABVF) putty that not only provides efficient antibiotic release kinetics at the site of infection but also allows efficient osseointegration. The ABVF formulation was prepared using poly (D,L-lactide-co-glycolide) (PLGA), polyethylene glycol (PEG), and polycaprolactone (PCL) as the polymer matrix, antibiotic vancomycin, and osseointegrating synthetic bone PRO OSTEON for bone-growth support. ABVF was homogenous, had a porous structure, was moldable, and showed putty-like mechanical properties. The ABVF putty released vancomycin for 6 weeks at therapeutic level. Furthermore, the released vancomycin showed in vitro antibacterial activity against Staphylococcus aureus for 6 weeks. Vancomycin was not toxic to osteoblasts. Finally, ABVF was biodegradable in vivo and showed an effective infection control with the treatment group showing significantly higher bone growth (p < 0.001) compared to the control group. The potential of infection treatment and osseointegration makes the ABVF putty a promising treatment option for osteomyelitis after TJR.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:13

Enthalten in:

Materials (Basel, Switzerland) - 13(2020), 22 vom: 11. Nov.

Sprache:

Englisch

Beteiligte Personen:

Hasan, Raquib [VerfasserIn]
Wohlers, Abbey [VerfasserIn]
Shreffler, Jacob [VerfasserIn]
Mulinti, Pranothi [VerfasserIn]
Ostlie, Hunter [VerfasserIn]
Schaper, Codi [VerfasserIn]
Brooks, Benjamin [VerfasserIn]
Brooks, Amanda [VerfasserIn]

Links:

Volltext

Themen:

Bone biomaterials
Bone regeneration
Bone void filler
Controlled drug delivery
Infection
Journal Article
Osteomyelitis
Staphylococcus aureus
Total joint replacement
Vancomycin
Vancomycin free-base

Anmerkungen:

Date Revised 30.03.2024

published: Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.3390/ma13225080

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM317546694