title: S53P4 bioactive glass and fibrin glue for the treatment of osteochondral lesions of the knee - a preliminary in vivo study in rabbits.
abstract: The role of the subchondral bone and the importance of treating both bone and cartilage in cases of chondral and osteochondral lesions of the knee have been highly emphasized. There are no current studies on the experimental use of bioactive glass S53P4 (BonAlive®) as granules in the treatment of osteochondral lesions of the knee. Our preliminary study was designed to establish an experimental model and assesses the effect of glass granules fixed with fibrin compared to fibrin alone as fillers of the osteochondral defects created in the weight-bearing and partial weight-bearing regions of the distal femur in six adult rabbits. We found that the size of the distal femur in adult domestic rabbits allows the creation of 4 mm diameter and 5 mm deep osteochondral defects on both the medial femoral condyle and the trochlea, bilaterally, without significantly affecting the activity level of the animals. Retention of the glass granules in the defects was achieved successfully using a commercially available fibrin sealant. At five weeks post-implantation, we found macroscopic and microscopic differences between the four types of defects. The use of bioactive glass S53P4 for filling condylar osteochondral defects in rabbit femora led to the initiation of an early bone repair process, observed at five weeks after implantation, while the filling of trochlear defects with fibrin glue resulted in the appearance of cartilaginous tissue characteristic of endochondral ossification.
authors.affiliation: Department of Otolaryngology, University of Medicine and Pharmacy of Tirgu Mures, Romania; ghe.muhlfay@gmail.com.
authors.forename: AncuŢa Marilena
authors.initials: AM
authors.lastname: Zazgyva
authors.forename: Simona
authors.initials: S
authors.lastname: Gurzu
authors.forename: Ioan
authors.initials: I
authors.lastname: Jung
authors.forename: Örs
authors.initials: Ö
authors.lastname: Nagy
authors.forename: Gheorghe
authors.initials: G
authors.lastname: Mühlfay
authors.forename: Tudor Sorin
authors.initials: TS
authors.lastname: Pop
mesh_terms: D000818:Animals; D005260:Female; D015718:Fibrin Tissue Adhesive / Q000494:pharmacology*; D005898:Glass / Q000737:chemistry*; D007430:Intraoperative Care; D007719:Knee Joint / Q000187:drug effects* / Q000473:pathology* / Q000601:surgery; D011817:Rabbits; D014945:Wound Healing / Q000187:drug effects
chemical_list: D015718:Fibrin Tissue Adhesive; C403922:bioactive glass S53P4