Publications by authors named "Carlos Alberto Souza Macedo"
Objective: To analyze the histological behavior of bovine lyophilized grafts (BLG) produced according to a protocol developed by the first author, in humans over a 49-month period by measuring the graft/bone neoformation ratio in relation to the total mineralized area.
Methods: This was a case series involving 12 patients: eight females (66%) and four males (34%), totaling 13 biopsies. BLG was used, and surgical reintervention was subsequently required during the period 2000 to 2011.
Unlabelled: To evaluate the physicochemical characteristics of lyophilized bovine grafts manufactured on a semi-industrial scale (Orthogen; Baumer S/A*) in accordance with a protocol previously developed by the authors.
Methods: The lyophilized bovine bone grafts were characterized by means of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffractometry (XRD), thermogravimetric (TG) analysis, differential exploratory scanning calorimetry (DSC) and Fourier-transform infrared (FT-IR) spectroscopy.
Results: Ca was the main component (60%) found in the samples, followed by P (28%) and O (5%).
Objective: To analyze the clinical and radiological outcomes from total hip arthroplasty using the Biomec prosthesis over a 20-year period (1988 to 2009).
Methods: The patients were evaluated clinically in accordance with the Merle d'Aubigné and Postel functional classification, and underwent anteroposterior (AP) radiography of the pelvis and the operated joint in lateral view. The variables evaluated were acetabular and femoral osteolysis, polyethylene wear, nail migration, follow-up and clinical outcomes.
Background: This is a cohort trial (1997-2005) of 49 patients submitted to an acetabular component revision of a total hip arthroplasty, using impacted human and bovine freeze-dried cancellous bone grafts (H&FDBG) and a reinforcement device.
Objective: To compare clinical/radiographic graft incorporation capability between cancellous bone grafts.
Patients/methods: There were two groups: I (n=26) receiving human grafts and II (n=25) receiving bovine grafts.