Mobility, Positioning, and Transfers

1. Range of Motion

Range of motion (ROM) is the normal distance and direction a joint can move. Active ROM is performed by the resident using their own muscles; passive ROM is performed by the CNA, who moves the resident's joint for them because the resident cannot; active-assistive ROM is a blend in which the resident does part of the movement and the aide helps complete it. Four directional movements appear throughout the exam: flexion (bending a joint, decreasing its angle), extension (straightening a joint, increasing its angle), abduction (moving a limb away from the midline of the body), and adduction (moving a limb toward the midline). The cardinal safety rule for all ROM is to stop at pain or resistance — the joint is moved gently, only to the point where it naturally resists, and never forced. Regular ROM helps prevent contractures, the permanent shortening of muscles and tendons that locks a joint in a bent position.

2. Positioning and Repositioning

Positioning means placing the resident's body to maintain alignment, comfort, and skin safety. The standard positions are: supine (lying flat on the back), prone (lying on the abdomen), lateral (lying on the side), Sims' (a side-lying position with the top leg bent forward, often used for comfort or procedures), Fowler's (sitting with the head of the bed raised roughly 45–60 degrees), and semi-Fowler's (head raised about 30 degrees). Residents who cannot change position on their own are repositioned (turned) at least every 2 hours to relieve pressure on the skin, keep joints aligned, and promote comfort. Repositioning is a core skin-injury-prevention measure and a frequent exam point: pressure on one spot too long reduces blood flow and can damage skin and underlying tissue.

3. Transfers, Ambulation, and Assistive Devices

A transfer is moving a resident from one surface to another — bed to chair, chair to toilet, or chair to wheelchair. The two safety ideas that drive every transfer are the gait belt and the strong side. A gait belt is a wide belt placed around the resident's waist that gives the CNA a secure hold during transfers and ambulation. The CNA always works toward the resident's stronger side so the resident can help bear weight and push up with the stronger arm and leg. A pivot transfer moves a resident who can bear some weight by having them stand and turn (pivot) a short distance from one seated surface to another, rather than being lifted. Ambulation is walking, and assistive devices support it: a cane is used on the strong side to widen the base of support, a walker provides the most stability for residents who are weak or unsteady, and a wheelchair provides mobility for residents who cannot walk. The CNA follows the care plan for which device each resident uses and how much assistance is needed.

How it works

1. A resident who moves less has joints that stiffen, muscles that weaken, and skin that stays pressed in one place.
2. The CNA supports movement: active or passive ROM keeps joints flexible, and ambulation or transfers keep muscles working.
3. Positioning and repositioning every 2 hours shift pressure off bony areas so blood keeps flowing to the skin.
4. During any transfer or walk, the gait belt and the strong-side rule keep the resident stable and let the resident contribute their own strength.
5. Throughout, the aide observes and documents — balance, pain, refusal, skin changes, and any fall — and reports changes to the nurse.
6. The nurse and care plan set each resident's device and assistance level; the CNA follows that plan and never exceeds it.

Common confusions

Memory aids

"AB-duct is Away from the Body; ADD-duct ADDs it back." Abduction starts with "AB," like "absent from the midline," and adduction starts with "ADD," like adding the limb back to the body. For the other pair, remember that flexion folds the joint (decreases the angle) and extension extends it (increases the angle).

Quick review

Topic Recap

Mobility care preserves a resident's independence and prevents the complications of immobility — contractures, weakness, and skin injury. The CNA supports range of motion, positions and repositions residents at least every 2 hours, and assists transfers and ambulation using a gait belt, the strong-side rule, and the assistive device named in the care plan. The unchanging safety rules are to stop at pain or resistance, move toward the strong side, and report any change in mobility to the nurse immediately.

Knowledge Check

1. Which movement brings a limb toward the midline of the body?
2. During passive range of motion, how far should the CNA move the joint?
3. How often should a resident who cannot reposition himself be turned?
4. When transferring a resident who is weak on the right side, on which side should the CNA place the wheelchair?
5. During ambulation, a resident suddenly reports pain and weakness in one leg. What is the CNA's best first action?

Answers and Rationales

1. Adduction. Adduction moves a limb toward the midline; abduction moves it away. Why: this is the single most common ROM direction pair on the exam.
2. Only until resistance or pain is felt — never beyond it. Why: forcing a joint past resistance can injure tissue, skin, and bone.
3. At least every 2 hours. Why: regular turning relieves pressure and protects skin and circulation.
4. On the strong (left) side. Why: working toward the strong side lets the resident push up and help bear weight, which is safer for both resident and aide.
5. Stop walking, help the resident to a safe seated position, and call the nurse. Why: new pain and weakness can signal a serious problem; the CNA observes and gets help rather than continuing or diagnosing.