30/06/2025
How amazing is your hand:
• The human hand consists of 27 bones, including the eight carpal bones, five metacarpal bones, and 14 phalanges. The carpal bones form two rows, with the proximal row comprising the scaphoid, lunate, triquetrum, and pisiform, while the distal row includes the trapezium, trapezoid, capitate, and hamate.
• Your hand has 3 key nerves, such as the median, ulnar, and radial nerves. They provide motor and sensory functions. The median nerve is vital for thumb and finger movement. The Ulnar nerve assists with intrinsic movements which helps with writing and other fine motor tasks. The radial nerve innervate the muscles that open our fingers.
•We have muscles inside (intrinsic muscles) the hand and muscles outside (extrinsic muscles) the hand that controls finger movement.
•Muscles are attached to bones by Tendons. These are the flexor tendons, which allow for finger flexion, and the extensor tendons, enabling extension.
• The vascular supply is primarily provided by the radial and ulnar arteries, which branch into smaller arteries to nourish the hand’s tissues. Additionally, the superficial palmar arch, formed by the ulnar artery, plays a crucial role in supplying blood to the fingers. The intricate interplay of these structures allows for the hand’s remarkable dexterity and functionality.
• There are also many ligaments that connect bone to bone and keep the joints together.
All anatomical structures work together in bance and if balance is disturbed there is usually a functional outcome.
OT’s assist with restoration of function while treating other associated symptoms such as pain, scars, etc.
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