You are designing a treatment plan for a patient who has experienced an acute full-thickness burn on the entire left lower extremity. Which movements of the left lower extremity need to be stressed with splinting, positioning, and exercise to avoid contractures?
1. Hip extension, knee extension, and ankle dorsiflexion
2. Hip flexion, knee extension, and ankle dorsiflexion
3. Hip extension, knee flexion, and ankle plantarflexion
4. Hip flexion, knee extension, and ankle plantarflexion
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