Range of Motion

Introduction to Range of Motion (ROM)

  • Definition: Joints must be moved through their maximal Range of Motion periodically to maintain their ROM.

  • Purpose of ROM Activities:
      - Ensures joint and soft tissue structures maintain existing mobility.
      - Minimizes the effects of immobilization and prevents the development of contractures.
      - Commonly used after injuries or surgeries.

Factors that Cause a Decrease in ROM

  • Systemic Disease: Affects the overall physical condition of the joints and soft tissues.

  • Joint Issues: Problems such as arthritis or injuries can limit movement.

  • Neurological Disorders: Impacts motor function and control, affecting ROM.

  • Muscular Diseases: Conditions like muscular dystrophy can reduce muscle contraction ability.

  • Surgery: Post-operative conditions may restrict movement.

  • Trauma: Injuries can lead to swelling and pain, reducing ROM.

  • Inactivity: Sedentary lifestyle contributes to stiffness and loss of flexibility.

  • Immobilization: Extended periods without movement lead to stiffness and atrophy.

Types of Range of Motion

  • Passive ROM (PROM): Movement is performed by an external force; no muscle contraction is involved.

  • Active Assisted ROM (AAROM): Involves assistance from an external force to complete the movement; motion is partly active and partly passive.

  • Active ROM (AROM): Involves active contraction of the muscles to produce movement of the joint.

Passive ROM (PROM) Details

  • Characteristics:
      - Movement created externally (e.g., therapist, machine).
      - Should not involve voluntary muscle contraction.
      - Can be facilitated by gravity, machines, or other people.

  • Important Note: PROM is distinct from stretching, as it is performed within the available range of motion.

Active Assisted ROM (AAROM) Details

  • Characteristics:
      - Movement is partly voluntary, aided by an external force.
      - Example: Using pulleys, where the unaffected arm helps move the affected arm.

Active ROM (AROM) Details

  • Characteristics:
      - Requires active contraction of muscles that cross a joint to produce movement.
      - Example: A patient raising their leg without assistance.

Continuous Passive Movement (CPM)

  • Defined as PROM performed continuously to a joint by a mechanical device for extended periods.

  • Uses:
      - Post-surgery rehabilitation.
      - Pain management initiatives.
      - Promotes early recovery of ROM.

  • Customizability: Allows for programming of range, rate, and duration of movement.

Other Methods for ROM

  • Examples:
      - Using a skateboard or a friction-free surface to facilitate movement.
      - Employing towels for motion.
      - Using equipment like a reciprocal exercise unit for upper or lower body ergometer exercises.

  • Benefits:
      - Uses the strength of the unaffected extremity.
      - Supports reciprocal patterning, endurance training, and strengthening.

Physical & Physiological Considerations

  • Intrinsic Factors:
      - Influence of the anatomy of the joint.
      - Joint congruency and elasticity of ligaments and tendons.

  • Extrinsic Factors:
      - Age, body size, disease, and history of injury can affect ROM.

Effects of Immobilization

  • Negative Outcomes:
      - Loss of bone density can begin within weeks due to absence of loading and muscle contraction, potentially leading to osteopenia or osteoporosis.
      - Degeneration of cartilage, as articular cartilage relies on the movement of synovial fluid for nourishment.
      - Fibrosis and adhesions in collagenous tissue through immobilization.
      - Muscle atrophy and contractures due to inactivity, resulting in reduced contractile force and size.

Indications for PROM

  • Utilized when a patient is unable or not allowed to move.
      - Aims to:
        - Maintain soft tissue and joint integrity.
        - Decrease the risk of contractures.
        - Improve circulation and reduce pain.
        - Assist healing processes and foster movement awareness.

  • Additional Uses:
      - Evaluates limits of motion, joint stability, and soft tissue elasticity.
      - Demonstrates desired motions during exercises and prior to passive stretching.

  • Application:
      - Upper Extremity (UE). Instruction on how to perform PROM focusing on shoulder motions.

Indications for AAROM and AROM

  • Timing: Should start when the patient can actively contract muscles and move segments.

  • Benefits Include:
      - Similar advantages as PROM while encouraging muscle elasticity and contractility.
      - Provides essential sensory feedback and enhances circulation.
      - Assists in reducing swelling and promoting healing.

Contraindications for AAROM and AROM

  • Medical Limitations: When physician's orders prohibit ROM or if motion interferes with the healing process (indications such as increased swelling, discoloration, or heat).

  • Symptoms Indicating Caution: Increased pain with movement or pushing motion beyond the available range, which would be considered as stretching, not ROM.

  • Specific Health Concerns: Address conditions such as blood clots or deep vein thrombosis (DVT).

Limitations to ROM

  • PROM Limitations:
      - Will not prevent muscle atrophy or develop strength or endurance.

  • AROM Limitations:
      - Will not necessarily enhance the strength of stronger muscles but can help in developing skill and coordination in the specific movement pattern.

Goals/Benefits of ROM

  • Objectives Include:
      - Maintain muscle elasticity and contractility.
      - Offer sensory feedback to reinforce motor patterns.
      - Provide a stimulus necessary for maintaining bone integrity.
      - Enhance circulation to help prevent clot formation.
      - Aid in the development of motor skills.
      - Lower the risks of developing contractures and pain.
      - Slow down the rate of muscle atrophy.
      - Address emotional and psychological components of recovery by reducing feelings of depression.

Implementation of ROM

  • Key Steps:
      - Engage in effective communication with the patient to clarify the purpose of exercises.
      - Determine the appropriate ROM type based on PT orders.
      - Ensure proper alignment of the patient in a comfortable position, including draping if necessary.
      - Support the moving body part and areas of poor structural integrity during movement.
      - Carefully monitor speed, range of motion, and the patient's tolerance to the exercises.