![]() ![]() If the side ligaments are torn, the patient may have pain on the side of a joint, and the joint may be loose.A direct blow to the tip of a finger can cause tendon or ligament damage, as well as fracture or dislocation of the bones.Animal bites are another common cause of finger injuries. The finger may also be jammed, twisted, or stretched playing sports. What Are Common Causes of Finger Injuries?Ī finger may be injured by a direct blow or cut. Damaging the nerve can cause numbness on the side of the finger supplied by the nerve.Sensation to the finger is supplied by four nerves, two (dorsal and volar digital nerves) running along each side of the finger.A tendon can also be torn away from its bony attachment, which is called an avulsion fracture.Both the tendon and its sheath can be damaged by a laceration (cut) or a crush injury.Tendons lie just under the skin of the fingers and are covered by a protective sheath. ![]() Tendons are the fibrous bands that attach muscles to bones and allow the flexible, precise movements of the joints.A ligament may be torn by a forceful stretch or blow, leaving the joint unstable and prone to further injury.Ligaments are the tough tissues that hold two bones together and stabilize a joint.Usually, a dislocation causes damage to the surrounding ligaments (ligaments hold bone to bone), which are stretched and remain damaged even after the dislocation is reduced (put back in place).Finger dislocations commonly happen due to a direct blow to the finger (like while playing ball sports).A dislocation is an injury to a joint that causes a bone to move out of its normal alignment with another bone.A fracture of a phalanx may be an isolated injury, but it is often associated with injury to tendons, ligaments, fingernails, or other soft tissue.Each finger (except the thumb) has three bones, or phalanges: the proximal (closest) phalanx (plural-phalanges), the middle phalanx, and the distal (furthest) phalanx.If a fingernail is injured by a direct blow, the underlying bone may also be broken.The fingernail and the underlying nail bed are the most commonly injured part of the hand.With an amputation, tissue is completely cut or torn away from the finger. Many different types of finger injuries are common:Ī laceration (cut) may only go through the skin, or it may cut through blood vessels, nerves, and tendons that lie just under the skin.Īn avulsion occurs when part of the skin or soft tissue is torn off. Careful treatment allows for a faster and more complete recovery. If not treated properly, serious finger injuries can lead to permanent deformity and loss of function. Picture of nail bed laceration resulting in a subungual hematomaįinger injuries range from minor cuts and scrapes to wounds with significant damage to bone, tendons, and ligaments. ![]()
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