1. Risk kinds of sport:

Skiing, kinds of ball spport

2. Anatomy:

Saddle joint

3. Function:

Diffraction, aspect ratio, opposing approximate (= the small finger)

4. Injury mechanism:

- Fall on the thumb (overstretching the thumb), mostly when ski driving - tear of the thumb volume

5. Symptoms:

- Swelling/movement pain/effusion of blood

6. First measures:

- Immobilizing
- Cooling (with it do not put the ice directly on the skin)

7. Diagnostics:

- Clinical diagnosis by the physician (Roentgen)

8. Therapy:

a) Conservative therapy
- Ointment dressing
- Immobilizing by Tape or gypsum
b) Operational therapy
- with bony avulsion
- with hit volume portions

9. Physiotherapy / rehablitation:

- Mobilization after immobilizing
- Electrical therapy

10. Prevention:

- Taping
- Muscular strengthening
- Technique training
- long loops at the ski stick, reaching from downside

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