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Principles of Range of Motion (ROM) & Mobilization
Lesson 1: Passive vs Active Range of Motion & End-Feel Analysis
Clinical guidelines for applying PROM vs AROM, recognizing normal vs abnormal end-feels (hard, firm, soft, empty), and avoiding muscle guarding.
💡 Key Exam & Clinical Points
- Passive ROM (PROM): Movement within unrestricted ROM produced entirely by an external force (no voluntary muscle contraction).
- Active-Assisted ROM (AAROM): Prime mover requires assistance from an outside force to complete motion.
- Normal End-Feels: Soft (tissue approximation), Firm (capsular/ligamentous stretch), Hard (bone-to-bone).
- Abnormal End-Feels: Empty (severe pain before end-range), Springy block (meniscal tear), Spastic/Rigid (neurological hypertonia).
🏥 Physical Therapy Clinical Relevance
PROM maintains joint mobility, prevents contractures, and enhances synovial fluid circulation post-surgery without stressing healing tendinous or bony repairs.
Complete Study Notes
# Passive vs Active Range of Motion & End-Feel Analysis
## 1. Classification of ROM Exercises
* **PROM**: Indicated when patient is unable to move (comatose, paralysis, acute inflammation post-surgery). Preserves capsule elasticity and synovial fluid movement.
* **AAROM**: Indicated when muscle strength is Grade 2/5 (Poor) or Grade 3-/5.
* **AROM**: Indicated when patient can contract muscles voluntarily. Builds coordination and aerobic circulation.
## 2. End-Feel Classification (Cyriax)
1. **Normal End-Feels**:
* *Soft*: Knee flexion (contact of calf and thigh).
* *Firm*: Wrist extension (capsular and ligamentous tension).
* *Hard*: Elbow extension (olecranon process into olecranon fossa).
2. **Abnormal End-Feels**:
* *Boggy*: Joint effusion or swelling.
* *Empty*: Severe acute pain; no mechanical resistance reached (e.g., acute bursitis).
* *Springy Block*: Rebound sensation indicating internal derangement (e.g., bucket-handle meniscal tear).
Lesson Self-Assessment Quiz
Immediate FeedbackQ1: An "Empty" end-feel during passive joint movement is indicative of which clinical situation?
Explanation: An Empty end-feel occurs when the patient requests movement stop due to intense pain before any structural mechanical resistance is felt by the therapist.