Mallet Finger: Causes, Symptoms and Treatment

This condition occurs when the tendon responsible for straightening the end joint of a finger is injured. Typically, mallet finger happens when the finger is forced to bend further than it should, causing the tendon to tear or detach from the bone. The most common cause is a sudden impact to the fingertip, such as hitting it while playing sports or accidentally closing a door on it. 

Remember, our fingers are delicate and complex, so even a small injury can lead to a mallet finger. If you ever experience difficulty straightening the end of your finger or notice it drooping, it's essential to seek medical attention promptly.

Symptoms of Mallet Finger

Symptoms include pain, swelling, and the inability to fully extend the fingertip. If you suspect you have a mallet finger, seeking medical attention is important for proper diagnosis and treatment to prevent long-term complications.

  • Mallet finger may present with a drooping or bent fingertip due to a tendon injury.
  • Patients may experience pain, swelling, and tenderness at the base of the affected finger.
  • Difficulty straightening the fingertip completely is a common symptom of mallet finger.
  • Bruising or discoloration around the injured area can be observed in some cases.
  • Impaired range of motion in the affected finger may be noticed, affecting daily activities.

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Causes of Mallet Finger

This injury typically results from a forceful blow to the fingertip or excessive bending of the finger. Additionally, accidents during everyday tasks, like catching a falling object or tucking in sheets, can also lead to this condition. Understanding the causes of mallet finger can help individuals take preventive measures to avoid such injuries.

  • Trauma from sports injuries, such as basketball or volleyball, can lead to a mallet finger by forcing the finger to bend excessively.
  • Accidental trauma, like slamming a finger in a door, can result in a mallet finger injury, causing the extensor tendon to tear or detach.
  • Occupational injuries, common among manual laborers or individuals working with heavy machinery, can cause mallet finger due to repetitive stress on the finger.
  • Arthritis or other degenerative joint conditions can weaken the finger's structure, making it more susceptible to developing a mallet finger deformity.
  • Incorrectly handling or gripping objects, especially if the force is applied at the fingertip, can result in a mallet finger injury.

Types Of Mallet Finger

Mallet finger, also known as baseball finger, can be classified into three main types based on severity: Type I involves a minor tendon injury resulting in slight drooping of the fingertip; Type II is characterized by a more significant tendon rupture causing noticeable drooping; and Type III is the most severe, where the tendon is completely detached from the bone, leading to a prominent deformity. Treatment varies depending on the type of mallet finger, with options ranging from splinting and physical therapy to surgical intervention for more severe cases.

  • Closed Mallet Finger: Occurs when the extensor tendon is injured but the overlying skin remains intact.
  • Open Mallet Finger: Involves a cut or wound over the extensor tendon, exposing it to the external environment.
  • Bony Mallet Finger: Involves a fracture at the insertion of the extensor tendon, affecting the bone as well.
  • Soft Tissue Mallet Finger: Injuries that primarily involve the soft tissues around the distal interphalangeal joint without bone involvement.
  • Chronic Mallet Finger: Refers to cases where the injury was not promptly treated, leading to long-term deformity or dysfunction.

Risk Factors

Mallet finger, a condition where the extensor tendon of the finger is damaged, can be caused by various risk factors. Additionally, underlying issues like arthritis or previous finger injuries can predispose individuals to mallet finger. Understanding these risk factors can help individuals take preventive measures to reduce the chances of experiencing mallet finger.

  • Trauma to the fingertip, such as hitting it against a hard surface, is a common risk factor for mallet finger.
  • Sports activities like basketball or volleyball that involve catching or throwing a ball increase the risk of developing mallet finger.
  • Occupational hazards, such as jobs that require repetitive finger movements or heavy lifting, can predispose individuals to mallet finger.
  • Age-related changes in the tendons and ligaments of the fingers can make older adults more susceptible to mallet finger injuries.
  • Having a history of previous finger injuries or conditions like arthritis can weaken the finger structures, making mallet finger more likely.

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Diagnosis of Mallet Finger

In some cases, an MRI or ultrasound may be recommended for a more detailed view of the tendon and surrounding structures. Additionally, the patient's medical history and mechanism of injury are considered during the diagnostic process to ensure an accurate assessment and appropriate treatment plan.

  • Diagnosis of mallet finger involves a physical examination by a healthcare provider.
  • X-rays may be used to assess the extent of the injury and confirm the diagnosis.
  • The healthcare provider will also inquire about the mechanism of injury and any symptoms experienced.
  • Assessing the range of motion and stability of the affected finger is crucial for diagnosis.
  • Differential diagnosis may be considered to rule out other conditions with similar symptoms.

Treatment for Mallet Finger

Mallet finger, also known as baseball finger, is a condition where the extensor tendon at the tip of the finger is damaged, leading to the inability to fully extend the finger. Treatment options for mallet finger typically depend on the severity of the injury. In mild cases, a splint may be sufficient to immobilize the finger and allow the tendon to heal properly. More severe cases may require surgery to reattach the tendon or realign the joint. 

Physical therapy is often recommended to help regain strength and flexibility in the affected finger. It is important to follow the healthcare provider's recommendations closely to ensure optimal healing and prevent long-term complications. In some cases, a combination of splinting, surgery, and therapy may be necessary for the best outcome in mallet finger treatment.

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Frequently Asked Questions

What early signs should I look for with mallet finger?

Swelling, pain, and inability to fully straighten the finger are early signs of mallet finger.

What precautions should be taken for mallet finger?

Use a splint to keep the finger straight, avoid using the injured hand for heavy activities, and follow up with a healthcare provider for proper assessment and guidance on recovery.

Are there any risks associated with untreated mallet finger?

Yes, untreated mallet finger can lead to permanent deformity and limited finger movement.

What steps should I take for the management of mallet finger?

For mallet finger, wearing a splint for at least 6 weeks and seeking medical advice is recommended for proper management of the condition.

Is mallet finger likely to come back after treatment?

Mallet finger may recur if the injury is not properly managed or if there is another trauma to the finger after treatment.

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