What is TFCC Tears (Triangular Fibrocartilage Complex)?
The triangular fibrocartilage complex (TFCC) is an important structure located on the ulnar (little finger) side of the wrist. It is composed of several interconnected components, including cartilage, ligaments, and a meniscus-like disc, all of which work together to stabilise and support the wrist.
The TFCC plays a key role in stabilising the distal radioulnar joint (DRUJ), which allows rotation of the forearm (such as turning the palm up and down). It also acts as a shock absorber between the end of the ulna and the carpal bones, helping to distribute load across the wrist during gripping and weight-bearing activities. Damage to the TFCC can disrupt these functions, leading to pain, instability, and reduced wrist function.
Causes
TFCC injuries can occur due to both acute trauma and gradual degeneration.
Acute tears are commonly caused by a fall onto an outstretched hand, particularly when the wrist is extended and the forearm is rotated. These injuries may also occur during sports or activities that involve forceful twisting or loading of the wrist. Repetitive strain is another contributing factor. Activities that involve repeated forearm rotation—such as using tools, racquet sports, or manual labour—can place ongoing stress on the TFCC, leading to microtrauma and eventual tearing.
Degenerative TFCC tears tend to occur with ageing as the tissues gradually wear down. This process may be accelerated in individuals with ulnar variance (where the ulna is slightly longer than the radius), which increases pressure on the TFCC. Degenerative tears are often seen in middle-aged and older adults and may develop without a specific injury.
Symptoms
Symptoms of a TFCC tear can vary in severity but typically affect the ulnar side of the wrist. Common symptoms include:
- Pain on the little finger side of the wrist, especially with gripping, lifting, or twisting movements
- Clicking, popping, or a sense of catching within the wrist
- Weakness of grip strength
- Difficulty or discomfort when rotating the forearm (e.g., turning a doorknob or using a screwdriver)
- A feeling of instability or reduced confidence in the wrist during load-bearing activities
Symptoms may be aggravated by activities that involve weight-bearing through the wrist, such as pushing up from a chair or performing push-ups. In some cases, mild swelling or tenderness may also be present.
Diagnosis
Diagnosis of a TFCC tear is based on a combination of clinical history, physical examination, and imaging findings. A healthcare provider will assess the location and nature of the pain, as well as any history of trauma or repetitive use.
During examination, specific clinical tests are performed to stress the TFCC and reproduce symptoms. These may include ulnar deviation of the wrist, compression of the joint, and rotational movements of the forearm. Tenderness over the TFCC region and pain with these manoeuvres can help support the diagnosis. Because TFCC injuries can mimic other wrist conditions, careful assessment is important to differentiate them from ligament injuries, tendon problems, or arthritis.
Imaging
Imaging is often used to confirm the diagnosis and evaluate the extent of injury. MRI scans are commonly used to assess the TFCC, as they provide detailed images of soft tissue structures, including cartilage and ligaments. They can help identify tears, degeneration, or associated injuries. MR arthrography (MRI with contrast injected into the joint) may improve detection of small or partial tears. Wrist arthroscopy is considered the gold standard for diagnosing TFCC injuries, as it allows direct visualisation of the structure from within the joint.
Treatment
Conservative (Non-operative)
Initial management of TFCC tears is usually conservative, particularly for minor or degenerative injuries, with the aim of reducing pain, allowing healing, and restoring function. Non-surgical treatment options may include splinting or bracing to immobilise the wrist and reduce strain on the TFCC, activity modification to avoid movements that worsen symptoms such as heavy lifting or repetitive twisting, and physiotherapy exercises designed to improve wrist stability, strength, and range of motion once pain has settled. Medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) may also be used to help manage pain and inflammation, while corticosteroid injections can provide targeted anti-inflammatory effects and temporary symptom relief. Many patients experience gradual improvement with these conservative measures over time.
Surgical treatment
If symptoms persist despite adequate conservative treatment, or if there is significant instability of the distal radioulnar joint, surgical intervention may be considered. Wrist arthroscopy is the most common surgical approach and is minimally invasive. During this procedure, a small camera is inserted into the wrist joint, allowing the surgeon to directly assess the TFCC. Depending on the type and location of the tear, the surgeon may debride (remove) damaged or frayed tissue to reduce irritation, or repair the TFCC using sutures, particularly in younger patients or in tears located in areas with good blood supply. In more complex or severe cases, additional procedures may be required to address underlying issues such as ulnar variance.
Recovery
Recovery following surgery varies depending on the procedure performed but typically involves a period of immobilisation followed by rehabilitation to restore motion, strength, and function. Outcomes are generally good, particularly when the condition is appropriately diagnosed and treated.