TFCC Tear (Triangular Fibrocartilage Complex Tear)

Overview

The triangular fibrocartilage complex (TFCC) is a small but important structure on the little-finger (ulnar) side of the wrist. Made of cartilage and ligaments, it cushions the wrist, helps the forearm rotate smoothly, and stabilizes the joint where the two forearm bones meet at the wrist. A TFCC tear is a disruption of this complex.

TFCC tears fall into two main groups. Traumatic tears result from a single injury, such as a fall onto an outstretched hand or a forceful twist of the wrist, and are common in athletes and younger people. Degenerative tears develop gradually from wear and aging, and are more common in older adults. TFCC injuries are a leading cause of ulnar-sided wrist pain. Many improve with rest and therapy, while others need procedures to relieve pain and restore stability.

Symptoms

The hallmark of a TFCC tear is pain on the little-finger side of the wrist, along with other features:

• Pain on the ulnar (little-finger) side of the wrist
• Pain that worsens with twisting motions, such as turning a doorknob or using a wrench
• A clicking, popping, or catching sensation with wrist movement
• Swelling on the outer wrist
• Weakness of grip
• A feeling of instability, especially when rotating the forearm or loading the wrist
• Pain when pushing up from a chair or leaning on the hand

Symptoms may be worse with activities that load and twist the wrist, and they can persist for weeks or months if the injury is not addressed.

Causes

TFCC tears arise from injury or gradual wear:

• Falls onto an outstretched hand: A common traumatic cause, loading and twisting the wrist.
• Twisting injuries: Forceful rotation of the forearm, as in racquet sports, golf, or gymnastics.
• Direct impact: A blow to the wrist or a sudden pull.
• Degeneration with age: The cartilage naturally thins and weakens over the years, making tears more likely from minor stress.
• Variation in bone length: When the ulna is relatively long compared with the radius, the extra pressure on the TFCC can contribute to degenerative tears.

Risk Factors

• Sports that load or twist the wrist, such as tennis, golf, gymnastics, and racquet sports
• Falls onto an outstretched hand
• Jobs involving repetitive wrist rotation or heavy use of tools
• Older age, with degenerative TFCC changes
• A relatively long ulna bone (ulnar positive variance)
• A previous wrist fracture or injury

Diagnosis

Diagnosis combines a focused exam with imaging:

• Physical exam: Pressing on the ulnar side of the wrist and performing maneuvers that stress the TFCC to reproduce pain or a click.
• X-rays: Used to check bone alignment and the relative length of the forearm bones, and to rule out fractures.
• MRI: The main imaging test for soft-tissue tears; sometimes performed with contrast dye injected into the joint for better detail.
• Wrist arthroscopy: A minimally invasive look inside the joint that is the most accurate way to confirm and grade a tear, and can be used to treat it at the same time.

Treatment

Many TFCC tears improve without surgery, and treatment is tailored to the type and severity of the tear:

• Rest and activity modification: Avoiding painful twisting and loading to let the injury settle.
• Splinting or bracing: A wrist splint or brace to limit motion and support healing.
• Anti-inflammatory measures: Ice and pain relievers; a corticosteroid injection may be used in some cases.
• Hand therapy: Exercises to restore motion, strength, and stability once pain allows.
• Surgery: If symptoms persist or the wrist is unstable, arthroscopic surgery can repair a tear or trim a degenerative one. When a long ulna is contributing, a procedure to shorten the bone may be considered.

Recovery time varies; non-surgical treatment may take several weeks to a few months, and surgery is followed by a period of rehabilitation.

Prevention

Not all TFCC tears can be prevented, but you can reduce the risk and protect the wrist:

• Use proper technique in sports that load or twist the wrist
• Strengthen the wrist and forearm muscles
• Wear wrist supports or guards when appropriate
• Warm up before activity and avoid sudden overloading
• Address wrist pain early rather than continuing to play through it

When to See a Doctor

See a doctor if you have ongoing pain on the little-finger side of the wrist, especially with twisting motions, or if you notice clicking, weakness, or a sense of instability that does not improve with rest. A hand or wrist specialist can confirm the diagnosis and guide treatment.

Seek prompt care after a significant wrist injury with severe pain, marked swelling, or a deformed wrist, and seek emergency care if the hand becomes numb, tingly, pale, or cold, which can indicate injury to nerves or blood vessels.

Related Topics

Frequently Asked Questions

References

1. American Society for Surgery of the Hand. Triangular fibrocartilage complex (TFCC) injuries.
2. American Academy of Orthopaedic Surgeons (OrthoInfo). Wrist Sprains.
3. Mayo Clinic. Wrist pain — Causes.
4. MedlinePlus, U.S. National Library of Medicine. Wrist injuries and disorders.