What it is
The triangular fibrocartilage complex stabilises the ulnar side of the wrist. Irritation or instability causes pain with forearm rotation, gripping, or weight bearing through the hand. In young athletes, repetitive load is common in racquet sports, gymnastics, stick sports, or falls onto the hand. It can also follow growth‑related length changes at the wrist.
Care settles pain, restores strength and control, and returns sport in stages. Surgery is considered when instability or persistent pain continues despite a thorough programme.
What happens when it occurs
The complex resists rotation and ulnar deviation. Repeated strain or a single twist can irritate the tissue. Early protection and bracing reduce symptoms. Strength for forearm rotation control and ulnar‑sided stabilisers builds tolerance. Technique and equipment changes reduce provocation.
Common causes and risk factors
- Racquet and stick sports with heavy rotation and ulnar deviation
- Gymnastics and weight-bearing on the hands
- Positive ulnar variance after distal radius growth plate changes
- Falls that force the wrist into rotation
Who is most affected
Adolescents in racquet, stick, and gymnastic programmes. Dominant wrists are common.
Typical symptoms
- Ulnar‑sided wrist pain with rotation or gripping
- Clicking or a sense of giving way in some cases
- Reduced tolerance for push and weight bearing on the hands
When to seek care
If pain persists beyond a week or two of rest, or if there is a sharp event with ongoing instability.
How we diagnose
History, ulnar fovea palpation, stress tests for rotation and deviation, and assessment of forearm and shoulder control. MRI with arthrogram is used when symptoms persist or surgery is considered.
Management
- A short period of bracing or taping to reduce rotation stress
- Task and technique changes for sport skills and tools
- Strength for pronation and supination control, ulnar deviators, and grip
- Shoulder and trunk strength to share the load
- Arthroscopic debridement or repair in selected cases
Rehabilitation milestones
Phase 1 weeks 0 to 2: pain control, brace for tasks, neutral wrist loading only.
Phase 2 weeks 2 to 6: progressive forearm rotation strength, controlled gripping, cardio and shoulder work.
Phase 3 weeks 6 to 12: sport skill progressions, partial weight bearing through hands.
Phase 4 months 3 to 6: return to complete competition volumes by criteria.
Readiness to progress
- Pain-free rotation strength within 90 per cent
- Grip endurance matched to the sport role
- Sport drills completed without next-day symptoms
Prevention
- Plan season volumes with rotation-heavy sports
- Use equipment sizes that match the hand and reduce extreme wrist angles
- Maintain forearm rotation and ulnar‑sided strength
Australia snapshot
- Regular in tennis, hockey, and gymnastics programmes
- Dominant wrist involvement is frequent
- Most adolescents recover without surgery when bracing and strength are combined with a technique change.
Latest insights
Rotation control and equipment choice are decisive. Small changes in grip size and wrist angle can often alleviate pain quickly.
When growth creates a length mismatch at the wrist, the plan must include the whole limb.
