Anatomy and Function of the Hand

Apr 24, 2025

Parts of a Hand

Overview

  • The hand is composed of numerous bones and moving parts that work in unison to perform a wide array of tasks.
  • Capable of executing both delicate movements and tasks requiring significant strength.

Hand Anatomy

Bones

  • Phalanges:
    • These are the bones of the fingers.
  • Metacarpals:
    • These form the middle part of the hand.
  • Carpals:
    • These comprise the wrist bones.

Joints

  • Allow for the movement by fitting bones together.

Ligaments

  • Soft tissues that connect bone to bone, providing joint stability.

Muscles

  • Soft tissues that contract and relax to facilitate hand movement.

Synovial Lining

  • Produces fluid within joints to ensure smooth movements.

Volar Plates

  • Rigid tissues stabilizing joints, preventing hyperextension of fingers.

Tendon Sheaths

  • Fluid-filled tubes that surround, protect, and guide tendons.

Tendons

  • Cord-like tissues connecting muscles to bones.

Blood Vessels

  • Responsible for transporting blood to and from the hand.

Nerves

  • Facilitate the sensation and movement coordination.

Palmar Fascia

  • A firm layer of soft tissue that stabilizes the palm.

Additional Resources

  • Saint Luke's provides an array of resources for various needs such as finding providers, accessing patient resources, and understanding conditions and treatments.
  • They offer assistance and services via their hotline and online platforms.