TFCC Injury
Upper LimbOverview
TFCC injury is a common cause of ulnar-sided wrist pain affecting the cartilage, ligaments, and tendons that stabilize the distal radioulnar joint (DRUJ) and ulnar wrist. Injuries may be acute traumatic or chronic degenerative, with variable presentations from mild inflammation to complete ligamentous disruption. Accurate diagnosis and early intervention are crucial to prevent chronic instability and functional impairment.
Pathophysiology
The TFCC acts as a shock absorber and stabilizer for the distal radioulnar joint. Acute injuries typically result from forced supination with wrist extension (falling on outstretched hand) or repetitive rotational activities causing microtrauma to the triangular fibrocartilage disc, ulnocarpal ligaments (ulnolunate, ulnotriquetral), and the dorsal/volar radioulnar ligaments. Chronic injuries develop from repetitive stress in racquet sports, gymnastics, or occupational activities. Degenerative tears are common with aging and may coexist with ulnar impaction syndrome.
Patient Education
The TFCC is a vital stabilizer on the inner (pinky) side of your wrist that absorbs shock and controls rotation; protecting it from twisting forces and impact during activity is essential for recovery and prevention of chronic instability.
Typical Presentation
Site
Ulnar-sided wrist pain, particularly over the ulnar fovea (between ulnar head and pisiform); may radiate into the forearm or hand
Quality
Sharp, clicking, catching, or dull aching pain; sensation of instability or 'clunking' during rotation
Intensity
Mild to moderate (3-7/10) in chronic cases; severe (7-10/10) in acute traumatic injuries; often increases with activity and improves with rest
Aggravating
Gripping, twisting/rotation movements (especially supination with ulnar deviation), ulnar deviation, weight-bearing through extended wrist, racquet sports, repetitive pronation/supination
Relieving
Rest, immobilization, ice application, anti-inflammatory medications, avoiding rotational activities
Associated
Weakness in grip and pinch strength, swelling over ulnar aspect of wrist, positive ulnocarpal fovea sign, positive TFCC stress test, clicking or clunking sensation with forearm rotation, possible loss of pronation/supination range
Orthopaedic Tests
Ulnar Fovea Sign
Procedure
Patient seated with the forearm resting in neutral. Press your thumb into the soft spot between the ulnar styloid and the flexor carpi ulnaris tendon, between the palmar surface of the ulnar head and the pisiform. Compare with the other wrist.
Positive Finding
Marked tenderness that the patient recognises as their pain, compared with the other side.
Sensitivity / Specificity
Reference: Tay SC, Tomita K, Berger RA. The "ulnar fovea sign" for defining ulnar wrist pain: an analysis of sensitivity and specificity. J Hand Surg Am. 2007;32(4):438-44. Schmauss D, Pöhlmann S, Lohmeyer JA, Germann G, Bickert B, Megerle K. Clinical tests and magnetic resonance imaging have limited diagnostic value for triangular fibrocartilaginous complex lesions. Arch Orthop Trauma Surg. 2016;136(6):873-80. Ou Yang O, McCombe DB, Keating C, Maloney PP, Berger AC, Tham SKY. Ulnar-sided wrist pain: a prospective analysis of diagnostic clinical tests. ANZ J Surg. 2021;91(10):2159-2162.
Interpretation
Points to a foveal (deep) tear of the TFCC attachment or an ulnotriquetral ligament injury. Also check distal radioulnar joint stability: foveal tears tend to come with an unstable DRUJ. The reference previously shown for this test could not be matched to any published paper and has been withdrawn. The original study (272 arthroscopy patients) reported 95% sensitivity and 87% specificity for foveal disruption and ulnotriquetral ligament tears. Larger later cohorts testing it against any TFCC lesion found specificity of 44–48%. It is more useful for foveal (peripheral) tears than as a general TFCC test.
Ulnocarpal Stress Test (ULCT / Ulnar Stress Test)
Procedure
Hold the patient's wrist in full ulnar deviation, press along the long axis of the hand towards the forearm, then passively rotate the forearm from pronation to supination.
Positive Finding
Reproduction of ulnar-sided wrist pain, with or without a click.
Interpretation
A positive test points to the ulnocarpal region: TFCC tear, ulnocarpal impaction or lunotriquetral injury. It does not tell these apart. Follow with the fovea sign, DRUJ stability and lunotriquetral tests, and imaging if symptoms persist.
Lunotriquetral Ballottement Test
Procedure
Stabilise the lunate between the thumb and index finger of one hand. With the other hand, hold the triquetrum and pisiform and move them palmar and dorsal relative to the lunate. Compare with the other wrist.
Positive Finding
Pain, more movement than on the other side, or crepitus between the lunate and triquetrum.
Interpretation
Suggests lunotriquetral ligament injury. Findings are subtle in this area, and MR arthrography or arthroscopy is usually needed to confirm it.
Supination Lift Test
Procedure
Patient seated, elbows bent to 90°, forearms fully supinated. The patient places both palms flat against the underside of a heavy table (or against the examiner's hands) and lifts upwards.
Positive Finding
Pain at the ulnar side of the wrist and/or difficulty lifting on the affected side.
Interpretation
A positive test suggests a peripheral TFCC tear. Like the other ulnar-sided tests, it is best combined with the fovea sign, DRUJ stability testing and imaging. A literature search (Europe PMC, September 2026) found no study reporting the diagnostic accuracy of this test, so no figure is shown. (The previous name carried "SLIL", which refers to the scapholunate ligament on the other side of the wrist.)
Extensor Carpi Ulnaris (ECU) Subluxation Test
Procedure
With the elbow bent and the wrist in slight ulnar deviation, ask the patient to move the forearm from pronation into full supination while you feel the ECU tendon over the back of the ulnar head. Adding resisted wrist extension and ulnar deviation in supination can bring the subluxation on.
Positive Finding
The ECU tendon visibly or palpably snaps out of its groove in supination and back in pronation, reproducing the patient's pain.
Interpretation
Suggests ECU subsheath injury with tendon instability — a separate problem from a TFCC tear, although both cause ulnar-sided pain and can occur together. Painless snapping in both wrists can be normal, so compare sides. A literature search (Europe PMC, September 2026) found no study reporting the diagnostic accuracy of this test, so no figure is shown.
⚠ Red Flags
- •Severe swelling and bruising suggesting acute ligamentous rupture or fracture
- •Signs of vascular compromise (pale, cold hand; diminished radial/ulnar pulses)
- •Complete loss of forearm pronation/supination suggesting acute DRUJ dislocation
- •History of high-energy trauma with severe mechanism
- •Systemic inflammatory disease presentation (polyarticular involvement, morning stiffness >1 hour)
⚡ Yellow Flags
- •Work-related injury with pending compensation claims or litigation
- •Psychosocial distress or catastrophizing about wrist function
- •Excessive health anxiety about cancer or serious pathology
- •Poor adherence to previous treatment recommendations
- •Chronic widespread pain or history of fibromyalgia
- •Secondary gain from symptom presentation
Osteopathic Techniques
Region
Distal radioulnar joint and TFCC
Technique
Rationale
Gentle oscillatory movements of the DRUJ promote synovial fluid nutrition, reduce pain, and improve proprioceptive feedback while respecting TFCC integrity in early phases of recovery
Region
Forearm (flexor and extensor compartments)
Technique
Rationale
Reduces muscular tension and trigger points in pronators/supinators (pronator teres, supinator, flexor carpi ulnaris) to decrease compensatory stress on the TFCC and improve fascial mobility
Region
Distal radioulnar joint
Technique
Rationale
Muscle energy techniques to the forearm rotators restore balanced pronation/supination without aggressive mobilization, reducing DRUJ hypermobility and allowing early proprioceptive training
Region
Wrist and ulnocarpal complex
Technique
Rationale
Functional techniques maintain the wrist in positions of comfort while gently encouraging normal arthrokinematics, reducing pain and facilitating neural motor control without triggering protective spasm
Region
Cervical spine and upper thoracic
Technique
Rationale
Addresses upper kinetic chain dysfunction and postural adaptations that may increase compensatory stress through the wrist, particularly in desk workers or those with poor posture
Region
Forearm lymphatic drainage
Technique
Rationale
Gentle lymphatic drainage from the forearm and wrist reduces local swelling, improves tissue fluid dynamics, and supports the inflammatory phase of healing without aggressive mobilization
Rehabilitation Exercises
Gentle Forearm Pronation/Supination Pendulums
Flexor Carpi Ulnaris Stretch (Wrist Extension with Radial Deviation)
Extensor Carpi Ulnaris Stretch (Wrist Flexion with Radial Deviation)
Forearm Supination with Dumbbell (Thumbs-Up Position)
Forearm Pronation with Dumbbell (Thumbs-Down Position)
Grip Strengthening with Therapy Ball or Putty
Wrist Radial/Ulnar Deviation Resistance with Dumbbell
Single-Arm Stability Ball Weight Support (Modified)
Wrist Proprioception Exercises on Unstable Surface (Wobble Board with Hand Support)
Cervical Spine Postural Re-education and Scapular Stabilization
Resisted Forearm Rotation with Resistance Band
Sport-Specific or Activity-Specific Wrist Stabilization Training (Racquet Swing Simulation, Gripping Patterns)
Referral Criteria
- •Persistent ulnar-sided wrist pain unresponsive to conservative management after 6-8 weeks
- •Clinical suspicion of DRUJ dislocation or fracture (imaging required)
- •Significant functional loss or inability to perform occupation/sport despite rehabilitation
- •Suspected complete TFCC tear with instability (may require surgical consultation)
- •Signs of vascular or nerve compromise
- •Evidence of systemic inflammatory disease or polyarticular involvement
- •Imaging findings requiring specialist interpretation (MRI or MR arthrography)
- •Recurrent instability episodes or chronic DRUJ hypermobility unresponsive to proprioceptive training