Anatomical and kinematic characteristics of the forelimb in orangutans: Basic information for development of a musculoskeletal model

2014 Fiscal Year Final Research Report

• Project/Area Number: 25840171
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Physical anthropology
• Research Institution: Nippon Veterinary and Life Science University
• Principal Investigator: OISHI Motoharu 日本獣医生命科学大学, 獣医学部, 講師 (40549557)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: オランウータン / 前肢 / 筋 / 回内-回外可動域 / 垂直木登り / 肘関節の可動域

Outline of Final Research Achievements

In order to construct its musculoskeletal model we described the anatomical and kinematic characteristics of the forelimb in orangutans. The force-generating capacities of the elbow flexor muscles were larger than those of the elbow extensors. The range of forearm rotation was 156.7° (pronation: 79.3°, supination: 77.4°). During the later part of the support phase the elbow joint maintained the flexion angle of about 80°, while the angle of the shoulder joint decreased. Within the limitations set by a small sample size, the present data is useful for development of a mathematical model of the forelimb musculoskeletal systems.

Free Research Field

生物学、人類学、自然人類学