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A sudden blow to the fingertip during sports or daily activities can leave the fingertip drooping and difficult to straighten. This common but often misunderstood injury, known as mallet finger, affects the delicate tendon that controls the end of the digit. Understanding the condition can help you recognize symptoms early and seek appropriate care.
At Georgia Hand, Shoulder & Elbow, serving patients in Marietta and Atlanta, GA, our team evaluates and treats a wide range of hand injuries. If you suspect that your finger injury requires medical attention, contactus today.
A mallet finger is an injury to the thin, terminal extensor tendon that straightens the end joint of a finger or thumb. This structure attaches to the distal phalanx bone and helps keep the fingertip straight. When the tendon is damaged, the fingertip droops and cannot actively straighten. The affected joint is called the distal interphalangeal (DIP) joint.
In simple terms, mallet finger is an injury that prevents the tendon from doing its job. Without treatment, the posture of the tip may remain bent.
In some cases, a secondary condition known as swan neck deformity can develop. This is when the distal interphalangeal joint (last finger joint) is in flexion (bent upwards) and the proximal interphalangeal (PIP) joint (next joint along) is in hyperextension (bent downwards).
Most mallet finger injuries occur when an object, like a baseball, strikes the tip of your finger and forces it to bend suddenly. This often happens during sports, particularly baseball and basketball.
These injuries can happen when an unyielding, rigid, or solid object hits the fingertip straight on. The force may cause the thin tendon that straightens the end joint to tear or pull away from the bone. In some cases, a fragment of the distal phalanx bone broke away along with the tendon. This type of injury is called an avulsion injury.
Other causes may include:
Children’s mallet finger injuries are also seen in youth sports. While many cases are straightforward, doctors recommend seeking treatment within the first week of the injury.
The hallmark sign of a mallet injury is that the fingertip droops and cannot be actively lifted. Straightening the fingertip may still be possible if someone else lifts it, but the patient may not be able to straighten the end joint on their own.
Common symptoms include:
Because the interphalangeal joints allow fine motor function, even a small tendon injury may affect grip strength and dexterity. If untreated, an untreated mallet finger may lead to poor function or swan neck deformity, where the middle joint becomes hyperextended, and the fingertip remains bent.
If you have signs of mallet finger, seek medical help as this injury requires medical treatment.
A doctor must carefully evaluate the injured finger through a physical examination and imaging studies. During the evaluation, the provider may perform what is commonly referred to as a mallet finger test. This involves asking the patient to extend their finger.
X-rays are frequently ordered to determine whether the distal phalanx bone broke away from the tendon attachment site.
While the diagnosis is often straightforward, careful evaluation helps determine whether non-surgical care is appropriate or whether surgical repair may be considered.
When a mallet finger is treated promptly, it can help avoid stiffness or deformity.
Most mallet finger injuries can be managed without surgery, particularly when there is no significant fracture or joint instability. Non-surgical treatment typically involves continuous splinting of the end joint.
Patients are usually instructed to:
The splint helps maintain the fingertip straight position so the terminal extensor tendon can heal. Even brief bending during the healing period may interrupt progress, so compliance is important.
Surgical repair may be considered if:
In some procedures, a temporary pin may be placed across the joint to hold it in proper alignment during healing. Because surgery carries a risk for infection and other complications, doctors weigh the potential benefits carefully before recommending operative care.
If the injury becomes chronic, joint fusion may be recommended.
Recovery timelines vary depending on the severity of the injury and whether surgery was required. Many patients treated promptly with splinting achieve acceptable function and appearance over time.
During the healing process:
After splint removal, some mild drooping or stiffness may persist. Hand therapy may help improve motion and strength, particularly in complex cases or when the injury involves the joint in the thumb or multiple fingers and thumb.
If your fingertip droops and cannot straighten after an impact, or if you suspect a mallet finger injury requires professional care, early evaluation may make a meaningful difference in your recovery.
Our specialists at Georgia Hand, Shoulder & Elbow provide comprehensive assessment and treatment for conditions affecting the fingers and thumb. Contact our Marietta or Atlanta office today to schedule an appointment and learn more about your options for restoring comfortable, confident hand function.
Randall Alexander, MD
Most mallet finger injuries happen when an unyielding, rigid, or solid object, like a baseball, strikes the tip, forcing the DIP joint to bend suddenly. This may tear the terminal extensor tendon or pull a small piece of bone away with the tendon.
While many cases are not emergencies, a mallet finger injury requires medical evaluation. If there is significant swelling, blood beneath the nail, or you have an open fracture, prompt care is especially important.
Most mallet finger injuries are treated non-surgically with continuous splinting. When treated promptly and worn as directed, many patients achieve acceptable function and alignment.
In an untreated mallet finger, the fingertip may remain bent. Over time, this may contribute to stiffness and a swan neck deformity.
Splinting often lasts six to eight weeks, though recovery times vary. Your doctor must carefully evaluate healing progress before allowing full activity.
