Anatomy and Function

The TFCC is a complex structure in the wrist, comprising:

1. Triangular fibrocartilage
2. Radioulnar ligaments
3. Ulnar collateral ligament
4. Extensor carpi ulnaris tendon sheath

Biomechanical Functions:

1. Forearm rotation
2. Wrist stability
3. Load transmission

Injury Mechanisms:

1. Fall onto outstretched hand
2. Repetitive strain (golf, tennis)
3. Direct blow to wrist

Arthrokinetic Analysis:

1. Wrist joint mobility assessment
2. Forearm rotation analysis
3. Muscle length-tension testing (extensor carpi ulnaris, flexor carpi ulnaris)
4. Ligamentous laxity testing

Biomechanical Changes:

1. Altered wrist kinematics
2. Increased ulnar variance
3. Decreased forearm rotation

Arthrokinetic Treatment:

1. Joint mobilization (wrist, radioulnar)
2. Soft tissue mobilization (extensor carpi ulnaris, flexor carpi ulnaris)
3. Muscle energy techniques (post-isometric relaxation, reciprocal inhibition)
4. Exercise (wrist strengthening, forearm rotation)

Phases of Treatment:

1. Acute (0-2 weeks): Pain management, joint mobilization
2. Sub-acute (2-6 weeks): Strengthening, soft tissue mobilization
3. Functional (6-12 weeks): Advanced strengthening, sports-specific training