What is the bone structure of the hand?
Bones. The human hand has 27 bones: the carpals or wrist accounts for 8; the metacarpals or palm contains five; the remaining fourteen are digital bones; fingers and thumb. The palm has five bones known as metacarpal bones, one to each of the 5 digits. These metacarpals have a head, a shaft, and a base.
What is the bone on the side of your hand?
The carpal bones are bound in two groups of four bones: the pisiform, triquetrum, lunate and scaphoid on the upper end of the wrist. the hamate, capitate, trapezoid and trapezium on the lower side of the hand.
What is the bone on the right side of your wrist?
The eight carpal bones are: scaphoid, a long boat-shaped bone under your thumb. lunate, a crescent-shaped bone beside the scaphoid.
Where are the tendons in your right hand?
There are two types of tendons in the hand, extensor and flexor tendons. Extensor tendons allow you to straighten your fingers while the flexor tendons allow you to bend them. Extensor tendons are located on the back of the hands and directly on the bone just beneath the skin.
What are the parts of a hand called?
Phalanges are the finger bones. Metacarpals are the middle part of the hand bones. Carpals are the wrist bones. Joints are places where bones fit together, allowing movement.
What are the bones in your hand called?
Hand & Wrist Care The technical names for hand bones and finger bones are the metacarpals and phalanges.
What is the side of your hand called?
The front, or palm-side, of the hand is referred to as the palmar side. The back of the hand is called the dorsal side.
What is the bone sticking out of my wrist?
A carpal boss, which is short for carpometacarpal boss, is an overgrowth of bone where your index or middle finger meets the carpal bones. Your carpal bones are eight small bones that make up your wrist.
Why do I have a lump on my wrist bone?
Ganglion cysts are lumps that most commonly develop in the wrist. They’re typically round or oval and are filled with a jelly-like fluid. Ganglion cysts are noncancerous lumps that most commonly develop along the tendons or joints of your wrists or hands. They also may occur in the ankles and feet.
How do you know if you have damaged a tendon in your hand?
If your extensor tendons are damaged, you’ll be unable to straighten 1 or more fingers. If your flexor tendons are damaged, you’ll be unable to bend 1 or more fingers. Tendon damage can also cause pain and swelling (inflammation) in your hand.
What does a torn ligament in the hand feel like?
Signs of a ligament injury include pain and swelling that’s similar to many other hand and wrist injuries. The wrist may also look bruised or discolored, and feel painful for several weeks. In some cases, a ligament injury may go undiagnosed, causing the joint to heal improperly.
What is the top side of your hand called?
The front, or palm-side, of the hand is referred to as the palmar side. The back of the hand is called the dorsal side. There are 27 bones within the wrist and hand.
What ligaments are in the hand?
Ligaments of the Wrist and Hand
| Ligament | Location |
|---|---|
| Anterior radiocarpal ligament | runs from the anterior aspect of the distal end of the radius to the scaphoid, lunate and capitate bones of the wrist |
| Radial collateral ligament | from the styloid process of radius to the scaphoid bone |
Which bone in the wrist is most commonly dislocated?
Most wrist dislocations involve the lunate bone of the proximal row of carpal bones and other bones.
Why is my ulna bone sticking out?
Madelung’s deformity is a rare condition in which the radius—one of the bones in the forearm—becomes curved, forcing the other forearm bone (the ulna) to stick out.
Should I be worried about a lump on my hand?
The bottom line. Most of the time, lumps on your hand or wrist aren’t a cause for concern. But, in rare cases, they may be a sign of a more serious condition. It’s important to follow up with your doctor if you notice a lump that’s grown quickly, is painful, or is accompanied by other symptoms like numbness or tingling …
What does a lump in your hand mean?
The most common cause of a hand lump is a ganglion cyst. These are fluid filled sacs which come from the joint or tendon fluid in the hand. Ganglion cyst are not cancer. Occasionally the cysts will go away on their own. They often fluctuate in size.
How do you know if you tore a tendon or ligament in your hand?
During an MRI scan, magnetic fields and radio waves are used to create images of muscles, bones, and tissue in the hand. An MRI can help to show if a tendon or ligament has torn partially or completely. This imaging test can also help your doctor to determine if other injuries are causing your symptoms.