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Finger Dislocation – Causes, Symptoms & Treatment

A finger dislocation occurs when the bones of a finger joint are forced out of their normal position. It is a common injury caused by falls, sports accidents, or direct trauma.

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Things worth knowing about "Finger Dislocation"

A finger dislocation occurs when the bones of a finger joint are forced out of their normal position. It is a common injury caused by falls, sports accidents, or direct trauma.

What Is a Finger Dislocation?

A finger dislocation is an injury in which the bones forming a finger joint are completely displaced from their normal alignment, so that the joint surfaces no longer make proper contact. It is one of the most common hand injuries, particularly in sports. The proximal interphalangeal (PIP) joint (the middle knuckle) is most frequently affected, followed by the metacarpophalangeal (MCP) joint (the base knuckle). A subluxation refers to a partial displacement where some joint contact remains.

Causes

Finger dislocations typically result from a sudden force applied to the finger. Common causes include:

Falls in which the finger is bent backward or sideways
Sports injuries, especially in ball sports such as volleyball, basketball, or handball
Direct blows or crushing injuries to the finger
Traffic accidents or workplace accidents

Associated injuries to the joint capsule, ligaments, or tendons are common and can increase the severity of the condition.

Symptoms

Typical signs of a finger dislocation include:

Visible deformity or abnormal positioning of the finger
Severe pain at the affected joint
Swelling and bruising (hematoma)
Limited or absent range of motion
Numbness or tingling if nerves are affected

Diagnosis

Diagnosis is made through a clinical examination, during which the physician assesses the deformity, joint stability, and range of motion. X-rays are essential to confirm the dislocation and to rule out or identify associated fractures. In complex cases, MRI (magnetic resonance imaging) may be used to evaluate ligament, tendon, and capsule injuries in greater detail.

Treatment

First Aid

As a first measure, the affected hand should be immobilized and cooled using an ice pack wrapped in a cloth (never directly on the skin). Self-reduction without medical supervision is strongly discouraged, as it carries the risk of injuring nerves, blood vessels, or tendons.

Reduction

The primary treatment is reduction -- the process of realigning the displaced bones back into their correct position. This is performed by a physician after administering pain relief or local anesthesia. Following successful reduction, the correct joint alignment is confirmed with a follow-up X-ray.

Immobilization and Rehabilitation

After reduction, the finger is immobilized using a splint or supportive bandage, typically for two to four weeks depending on injury severity. This is followed by physiotherapy to gradually restore mobility and prevent joint stiffness.

Surgical Treatment

Surgery may be required in cases involving associated fractures, tendon ruptures, or significant ligament damage that compromises joint stability. Surgical intervention aims to reconstruct the damaged structures and restore normal joint function.

Prognosis

With prompt and appropriate treatment, the outlook for an uncomplicated finger dislocation is generally good. Residual swelling and mild stiffness may persist for several weeks to months. Consistent follow-up care and physiotherapy significantly improve long-term outcomes.

References

Rockwood and Green's Fractures in Adults, 9th Edition, Wolters Kluwer, 2020.
Leggit JC, Meko CJ: Acute Finger Injuries: Part I. Tendons and Ligaments. American Family Physician, 2006; 73(5): 827-834.
World Health Organization (WHO): Musculoskeletal conditions overview. Available at: https://www.who.int/news-room/fact-sheets/detail/musculoskeletal-conditions

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