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Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Finger joint motion generated by individual extrinsic muscles: A cadaveric study | Journal of Orthopaedic Surgery and Research BioMed Central Research article Finger joint motion generated by individual extrinsic muscles A cadaveric study Ashish D Nimbarte Rodrigo Kaz and Zong-Ming Li Open Access Address Hand Research Laboratory Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh PA 15213 USA Email Ashish D Nimbarte - nimbarte.ashish@gmail.com Rodrigo Kaz - rodrigokaz@hotmail.com Zong-Ming Li - zmli@pitt.edu Corresponding author Published II July 2008 Received 22 December 2007 Journal of Orthopaedic Surgery and Research 2008 3 27 doi 10.1186 1749-799X-3-27 Accepted 11 July 2008 This article is available from http www.josr-online.cOm content 3 I 27 2008 Nimbarte et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http creativecommons.org licenses by 2.0 which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Our understanding of finger functionality associated with the specific muscle is mostly based on the functional anatomy and the exact motion effect associated with an individual muscle is still unknown. The purpose of this study was to examine phalangeal joints motion of the index finger generated by each extrinsic muscle. Methods Ten 6 female and 4 male fresh-frozen cadaveric hands age 55.2 5.6 years were minimally dissected to establish baseball sutures at the musculotendinous junctions of the index finger extrinsic muscles. Each tendon was loaded to 10 of its force potential and the motion generated at the metacarpophalangeal MCP proximal interphalangeal PIP and distal interphalangeal DIP joints was simultaneously recorded using a marker-based motion capture system. Results The flexor digitorum profundus FDP generated average flexion of 19.7 41.8 and 29.4 degrees at the MCP PIP and DIP joints respectively. The flexor digitorum superficialis FDS generated
