Four Corner Fusion: Postoperative Rehabilitation Protocol

Phase I: Protection and Early Recovery (0–2 Weeks)

Immobilisation:

  • Long-forearm splint

  • Elevation encouraged to reduce oedema

Precautions:

  • Avoid lifting, gripping, and weight-bearing through the wrist

  • Protect the fusion site and soft tissues

  • Avoid forceful finger or forearm loading

Therapy:

  • Finger and thumb range of motion exercises

  • Elbow and shoulder mobilisation

  • Oedema control and wound care

  • Tendon gliding exercises

  • Maintain mobility of uninvolved joints

Criteria to Progress:

  • Healing wound

  • Controlled pain and oedema

  • Good finger mobility

Phase II: Continued Protection and Progressive Motion (2–6 Weeks)

Immobilisation:

  • Transition to fiberglass below-elbow cast at approximately 2 weeks

  • Continue immobilisation until 6 weeks postoperatively

Precautions:

  • Avoid lifting, gripping, or weight-bearing through the wrist

  • Avoid forceful wrist motion

  • Avoid impact loading

Therapy:

  • Continue finger and thumb range of motion

  • Continue elbow and shoulder mobilisation

  • Oedema management

  • Maintain tendon mobility

Criteria to Progress:

  • Minimal pain and swelling

  • Radiographic progression of fusion

  • Good digital motion

Phase III: Progressive Motion and Early Strengthening (6–12 Weeks)

Immobilisation:

  • Discontinue cast and transition to removable wrist splint as required

Precautions:

  • Avoid heavy gripping and loading early in this phase

  • Avoid repetitive impact activities

Therapy:

  • Commence wrist active range of motion exercises

  • Gentle forearm rotation exercises

  • Progressive functional hand use

  • Commence light grip strengthening

  • Gradual progression of activities of daily living

Criteria to Progress:

  • Improving wrist motion

  • Minimal pain

  • Radiographic progression towards union

Phase IV: Return to Function and Endurance (3–6 Months)

Precautions:

  • Gradual return to heavier activities

  • Avoid excessive repetitive loading until fusion established

Therapy:

  • Progressive strengthening and endurance training

  • Functional and task-specific rehabilitation

  • Gradual return to work and recreational activities

  • Criteria for Return to Activity

  • Radiographic union

  • Functional range of motion

  • Good strength and endurance

  • No significant pain or swelling

General Recommendations

Work:

  • Desk-based work may resume after 1–2 weeks depending on comfort.

  • Manual work is typically deferred until 3–6 months depending on fusion progression and job demands.

Driving:

  • It is important that you are medically fit to return to driving and you feel safe to control the vehicle and take evasive action if needed.

Sports and Leisure:

  • Lower-limb activities may resume as comfort allows.

  • Light hand use may commence following cast removal as directed.

  • Progressive return to functional and gym activities from approximately 3 months.

  • Higher-demand wrist loading, racquet sports, or impact activities typically from 4–6 months or longer with full recovery and surgeon clearance.

Disclaimer: This protocol is intended as a general rehabilitation guide only. Rehabilitation progression should always be individualised and may be modified by A/Prof Ernstbrunner and the treating rehabilitation team based on the patient’s clinical progress, surgical findings, and individual circumstances.

Tendon transfer and reconstructive shoulder surgery with A/Prof Lukas Ernstbrunner

Your recovery is our priority, and we’re here to support you every step of the way.

If you have any questions or concerns during your postoperative recovery, please refer to the postoperative protocol that has been provided for you or don’t hesitate to contact us directly on (03) 9970 1704 or admin@ROMortho.com.au.