05/01/2026
Pennate muscles feature fibers arranged obliquely to a central tendon, resembling a feather's barbs. This structure allows greater force production compared to parallel-fibered muscles, though with reduced shortening range.я┐╜я┐╜TypesUnipennate muscles have fibers on one side of the tendon, like the extensor digitorum longus.я┐╜ Bipennate muscles feature fibers on both sides, such as the re**us femoris.я┐╜ Multipennate muscles have fibers radiating around multiple tendons, as in the deltoid.я┐╜AdvantagesPennate architecture packs more fibers into a smaller space, increasing physiological cross-sectional area (PCSA) for higher force output.я┐╜ During contraction, fibers rotate, enabling variable gearing that optimizes velocity at low loads and force at high loads.я┐╜ExamplesCommon in limb muscles for powerful movements, like finger flexors or wrist extensors.я┐╜ This design suits physiotherapy rehab, emphasizing strength over excursion in conditions like knee osteoarthritis.я┐╜
Pant Physiotherapy Clinic Near Ghasmandi Road Ramnagar.