ANDRE PEDRINELLI
Projetos de Pesquisa
Unidades Organizacionais
Instituto de Ortopedia e Traumatologia, Hospital das Clínicas, Faculdade de Medicina
LIM/41 - Laboratório de Investigação Médica do Sistema Músculoesquelético, Hospital das Clínicas, Faculdade de Medicina
LIM/41 - Laboratório de Investigação Médica do Sistema Músculoesquelético, Hospital das Clínicas, Faculdade de Medicina
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- The influence of femoral tunnel position in single-bundle ACL reconstruction on functional outcomes and return to sports(2014) FERNANDES, Tiago Lazzaretti; FREGNI, Felipe; WEAVER, Kayleen; PEDRINELLI, Andre; CAMANHO, Gilberto Luis; HERNANDEZ, Arnaldo JoseThe purpose of this study was to radiographically investigate the influence of femoral tunnel placement in ACL reconstruction on early outcomes and return to sports due to anatomic and nonanatomic positioning. A prospective study was conducted from 2008 to 2010, with 86 athletes who underwent ACL reconstruction between anteromedial (AM) footprint and high AM position. Knee functional outcomes (IKDC objective and subjective, Tegner score, and Lysholm scale) return to sports and complications were analyzed at 6- and 12-month follow-up. At follow-up, it was observed that tunnel projection along Blumensaat's line was correlated with functional outcomes on Tegner scale (at 6 and 12 months) and IKDC subjective (at 12 months). There was a significant difference in mean tunnel projection along Blumensaat's line when analyzing return to sports (73 +/- A 1.4 and 79 +/- A 1.7 %, respectively, for projections on return vs. no return to sports, p = 0.02) and complications (73 +/- A 1.3 vs. 78 +/- A 1.6 %, respectively, for projections on no complications vs. complications, p = 0.03). No differences were stated on coronal view. These correlations between tunnel positioning on functional outcomes could not be explained by demographic or baseline characteristics. The clinical relevance of this study is that tunnel positioning along AM footprint and high AM position represented by tunnel projection along Blumensaat's line is associated with early return to sports on previous Tegner level and better functional outcome in athletes. III.
- Description of an evaluation system for knee kinematics in ligament lesions, by means of optical tracking and 3D tomography,(2014) FERNANDES, Tiago Lazzaretti; RIBEIRO, Douglas Badillo; ROCHA, Diogo Cristo da; ALBUQUERQUE, Cyro; MARTINS PEREIRA, César Augusto; PEDRINELLI, André; HERNANDEZ, Arnaldo JoséObjective: To describe and demonstrate the viability of a method for evaluating knee kine matics, by means of a continuous passive motion (CPM) machine, before and after anterio cruciate ligament (ACL) injury. Methods: This study was conducted on a knee from a cadaver, in a mechanical pivot-shif simulator, with evaluations using optical tracking, and also using computed tomography. Results: This study demonstrated the viability of a protocol for measuring the rotation an translation of the knee, using reproducible and objective tools (error<0.2mm). The mech anized provocation system of the pivot-shift test was independent of the examiner an always allowed the same angular velocity and traction of 20 N throughout the movement. Conclusion: The clinical relevance of this method lies in making inferences about the in viv behavior of a knee with an ACL injury and providing greater methodological quality in futur studies for measuring surgical techniques with grafts in relatively close positions.