The lumbricals are four, small, worm-like muscles on each hand. These muscles are unusual in that they do not attach to bone.

Oct 30, 2023 · This is an article on the anatomy, function, and pathology of the lumbrical muscles of the hand. Start learning this group of four muscles here.

The lumbrical muscles comprise 4 intrinsic muscles of the hand and are involved in flexion of the metacarpophalangeal joint (MCPJ) and extension of the proximal interphalangeal and distal …

Nov 6, 2025 · There are four lumbricals - each associated with a digit. They originate from the tendon of the flexor digitorum profundus.

The lumbrical muscles of hand are four slender, worm-like (resembling lumbricus) intrinsic muscles located deep within the midpalmar space. They are unique among hand muscles as …

Mar 6, 2025 · On each hand, the lumbricals are four tiny, worm-like muscles. However, they attach proximally to the flexor digitorum profundus muscles and distally to the extensor …

Lumbricals are intrinsic hand muscles that flex the MCP joints and extend the IP joints. The lumbrical muscles of the hand are four slender, worm-like intrinsic muscles located in the …

• Lumbrical I can be innervated by ulnar nerve. • Lumbrical II can be innervated by ulnar, or by median and ulnar nerves. • Lumbrical III can be innervated by median nerve.

The lumbricals are deep muscles of the hand that flex the metacarpophalangeal joints and extend the interphalangeal joints. It has four, small, worm-like muscles on each hand. These muscles …

May 6, 2025 · The lumbrical muscles are intrinsic muscles of the hand that play a role in complex hand movements, such as holding a pen, and contribute to the hand's overall dexterity.