title: Orthopaedic applications of a validated force-based biomechanical model of the index finger.
abstract: An anatomically realistic biomechanical model of the index finger was created using a force-based approach in order to predict the isometric fingertip force or dynamic movement based on the forces of 7 index finger musculotendons. The model was validated for static forces through comparison with experimental results from 5 cadaver specimens. The model reliably simulated the isometric fingertip force produced by loading individual tendons. The average error in fingertip force direction was less than 2° and the average error in magnitude was less than 10% across finger postures for each muscle. Subsequent employment of the model to examine force transmission from the long flexors revealed a strong dependence of joint contact force on finger posture for a given tendon load. This may have ramifications for osteoarthritis as high joint contact forces are thought to contribute to the disease.
authors.forename: Dan
authors.initials: D
authors.lastname: Qiu
authors.forename: Derek G
authors.initials: DG
authors.lastname: Kamper
mesh_terms: D005384:Finger Joint / Q000033:anatomy & histology / Q000502:physiology; D005385:Fingers / Q000033:anatomy & histology* / Q000473:pathology; D006801:Humans; D008953:Models, Anatomic; D008954:Models, Biological; D018482:Muscle, Skeletal / Q000502:physiology; D009983:Orthopedic Equipment