Composition of the postero-anterior-anterior-posterior (PA AP) muscle chain: The main chain has 4 muscle groups, each with a specific function: The Sentinel Group of the Vertical Axis: Deep posterior muscles of the spine: Multifids. Inter
Composition of the postero-anterior-anterior-posterior (PA AP) muscle chain: The main chain has 4 muscle groups, each with a specific function: The Sentinel Group of the Vertical Axis: Deep posterior muscles of the spine: Multifids. Inter
Composition of the postero-anterior-anterior-posterior (PA AP) muscle chain: The main chain has 4 muscle groups, each with a specific function: The Sentinel Group of the Vertical Axis: Deep posterior muscles of the spine: Multifids. Inter