Understanding Mallet Finger Symptoms, Causes and Treatment

Written by Medicover Team and Medically Reviewed by Dr NVS Vinay , Orthopedics

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1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Mallet finger is a condition that occurs when the tendon responsible for straightening the end joint of a finger is injured. It usually happens when the fingertip is forced to bend further than it should, causing the tendon to tear or detach from the bone.

This injury often occurs during sports activities or accidental impacts such as hitting the fingertip with a ball or closing a door on it. Because fingers are delicate and complex structures, even a small injury can lead to difficulty straightening the fingertip. If the finger droops or cannot fully extend, medical attention should be sought to avoid long-term complications.

What Are the Types of Mallet Finger?

Mallet finger can be classified into several types based on the nature and severity of the injury affecting the tendon or bone.

Closed mallet finger where the tendon is injured but the skin remains intact
Open mallet finger where a cut or wound exposes the tendon
Bony mallet finger involves a small fracture where the tendon attaches to the bone
Soft tissue mallet finger affects mainly the tendon without bone involvement
Chronic mallet finger where the injury was untreated or treated late leading to long-term deformity

What Are the Symptoms of Mallet Finger?

The symptoms of mallet finger usually appear immediately after the injury and mainly affect the end joint of the finger. The damaged tendon prevents the fingertip from straightening normally.

Drooping or bent fingertip
Pain and swelling at the end of the finger
Tenderness around the injured joint
Difficulty straightening the fingertip completely
Bruising or discoloration near the injured area
Reduced range of motion affecting daily activities

What Causes Mallet Finger?

Mallet finger usually occurs due to sudden trauma that forces the fingertip to bend beyond its normal range. This excessive bending damages the extensor tendon responsible for straightening the finger.

Several situations can lead to this injury.

Sports injuries during activities such as basketball or volleyball
Accidental trauma like slamming a finger in a door
Repetitive stress injuries related to occupational activities
Handling or gripping objects incorrectly causing pressure on the fingertip
Degenerative joint conditions such as arthritis that weaken finger structures

When Should You See a Doctor for Mallet Finger?

Medical evaluation is important if the fingertip cannot be straightened or if pain and swelling persist after a finger injury. If any of these symptoms persist, early diagnosis by a doctor helps prevent complications and ensures proper healing.

Drooping fingertip after an injury
Pain and swelling in the finger joint
Difficulty moving or straightening the finger
Bruising or visible deformity of the fingertip
Persistent symptoms that do not improve within a short time

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How Is Mallet Finger Diagnosed?

Diagnosis of mallet finger usually involves a physical examination and imaging tests to determine the extent of tendon damage or bone injury.

Healthcare providers evaluate the finger's movement and review the patient's injury history to confirm the diagnosis.

Physical examination to assess finger drooping and movement
X-rays to check for fractures or bone involvement
MRI or ultrasound for detailed evaluation of tendon injury in complex cases
Assessment of finger stability and range of motion
Review of injury mechanism and symptoms

What Are the Treatment Options for Mallet Finger?

Treatment for mallet finger depends on the severity of the injury and whether the tendon or bone is affected. Early treatment helps ensure proper healing and prevents permanent deformity.

Doctors may recommend one or more treatment approaches.

Finger splinting to keep the fingertip straight while the tendon heals
Continuous splint use for several weeks to allow proper recovery
Surgical repair if the tendon is severely damaged or detached
Realignment of bone fragments in cases of bony mallet finger
Physical therapy to restore finger strength and flexibility after healing

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What Is the Recovery Process for Mallet Finger?

The recovery process for mallet finger depends on the severity of the injury and the treatment method used. Proper splinting and adherence to medical instructions are essential for successful healing.

Continuous splint use for several weeks to maintain finger alignment
Regular follow-up visits to monitor healing progress
Gradual finger movement exercises after splint removal
Physical therapy to restore strength and flexibility
Avoiding activities that may reinjure the finger during recovery

Frequently Asked Questions

1. 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.

2. 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.