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.