Understanding the Biomechanics of Lever Arm Disorders in Cerebral Palsy
Volume 10 | Issue 1 | January-April 2024 | Page: 09-13 | Jayanth Sampath, Taral Nagda
DOI- https://doi.org/10.13107/ijpo.2024.v10i01.172
Submitted: 01/02/2024; Reviewed: 14/02/2024; Accepted: 18/03/2024; Published: 10/04/2024
Authors: Jayanth Sampath MS Ortho [1], Taral Nagda MS Ortho [2]
[1] Department of Paediatric Orthopaedics, Rainbow Children’s Hospital, Bangalore, Karnataka, India.
[2] Department of Paediatric Orthopaedics, SRCC NH Children’s Hospital, Mumbai, Maharashtra, India
Address of Correspondence
Dr. Jayanth S. Sampath,
Rainbow Children’s Hospital, Bangalore, Karnataka, India.
E-mail: jayanthdoc@gmail.com
Abstract
Levers in the human body play an important role in facilitating efficient movement. Muscle forces act around the axis of movement of adjacent joints. The normal moment of a joint (M) is the product of the muscle force (F) and the length of lever arm (d). The primary neurological insult in cerebral palsy (CP) causes shortening of muscles, joint contractures, and torsional abnormalities in bones. The resulting ineffective lever arm leads to a failure to produce an appropriate torque and subsequent gait abnormalities. Therefore, the effects of lever arm dysfunction should be considered when gait improvement surgery is being offered to children with CP. This review will explain the role of levers in normal human biomechanics and the significance of lever arm dysfunction in the management of CP.
Keywords: Biomechanics, Lever arm, Disorder, Cerebral palsy
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| How to Cite this Article: Sampath J, Nagda T | Understanding the Biomechanics of Lever Arm Disorders in Cerebral Palsy | International Journal of Paediatric Orthopaedics | January-April 2024; 10(1): 09-13 . https://doi.org/10.13107/ijpo.2024.v10i01.172 |
