Comparison between the effects of platelet-rich plasma and bone marrow concentrate on defect consolidation in the rabbit tibia

• Published in: Clinics (São Paulo, Brazil) Vol. 66; no. 10; pp. 1787 - 1792
• Main Authors: Batista, Marco Antonio, Leivas, Tomaz Puga, Rodrigues, Consuelo Junqueira, Arenas, Géssica Cantadori Funes, Belitardo, Donizeti Rodrigues, Guarniero, Roberto
• Format: Journal Article
• Language: English
• Published: Elsevier España, S.L.U 01.10.2011; Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo
• Subjects: Basic Research; Bone substitutes; Fracture healing; Histology; Radiology; Tomography; Radiology; Tomography; Fracture healing; Histology; Bone substitutes
• ISSN: 1807-5932; 1980-5322
• DOI: 10.1590/S1807-593220110007000018

To perform a comparative analysis of the effects of platelet-rich plasma and centrifuged bone marrow aspirate on the induction of bone healing in rabbits. Twenty adult, male New Zealand rabbits were randomly separated into two equal groups, and surgery was performed to create a bone defect (a cortical orifice 3.3 mm in diameter) in the proximal metaphysis of each rabbit's right tibia. In the first group, platelet-rich plasma was implanted in combination with β-tricalcium phosphate (platelet-rich plasma group), and in the second group, centrifuged bone marrow in combination with β-tricalcium phosphate (centrifuged bone marrow group) was implanted. After a period of four weeks, the animals were euthanized, and the tibias were evaluated using digital radiography, computed tomography, and histomorphometry. Seven samples from each group were evaluated. The radiographic evaluation confirmed the absence of fractures in the postoperative limb and identified whether bone consolidation had occurred. The tomographic evaluation revealed a greater amount of consolidation and the formation of a greater cortical bone thickness in the platelet-rich plasma group. The histomorphometry revealed a greater bone density in the platelet-rich plasma group compared with the centrifuged bone marrow group. After four weeks, the platelet-rich plasma promoted a greater amount of bone consolidation than the bone marrow aspirate concentrate.