Positioning, Alignment, and Pressure Injury Prevention

Why Positioning and Alignment Matter

Every patient you care for spends long periods in bed or a chair. Without regular, careful repositioning, skin over bony prominences breaks down, leading to pressure injuries (also called pressure ulcers). These wounds cause serious pain, infection, and prolonged hospitalization. As a nursing assistant, you are the team member most likely to catch early warning signs and carry out repositioning schedules. Correct technique also protects you and your patient from musculoskeletal injury.

Bony Prominences at Risk

A bony prominence is any area where bone sits close to the skin surface with little protective tissue in between. Pressure concentrates at these points and cuts off blood supply to the overlying skin. The main sites to know are:

• Heels – most vulnerable in the supine position
• Sacrum and coccyx – most vulnerable when supine or semi-reclined
• Greater trochanters (outer hip bones) – most vulnerable in lateral (side-lying) positions
• Elbows – at risk in any position where the arm rests on a hard surface
• Shoulder blades (scapulae) – at risk in supine
• Occiput (back of skull) – at risk in supine, especially in older patients or those with thin hair
• Medial knees and ankles – at risk when the legs rest against each other in a lateral position
• Ears – at risk in lateral positions

Early signs of pressure injury include redness that does not fade when pressed (non-blanchable erythema), warmth, firmness, or skin breakdown. Report any of these findings to the nurse immediately.

Repositioning Frequency

The standard guideline for bed-bound patients is repositioning at least every two hours. Patients in chairs should be repositioned or assisted to shift weight at least every hour. Some patients with fragile skin or poor circulation may need more frequent repositioning — always follow the individualized care plan. Document every turn on the repositioning flow sheet, including the time, position used, and skin condition observed.

The Five Required Positions

Supine (Flat on Back)

Place the patient flat with the spine in a neutral line. Support the head with one pillow — avoid excessive neck flexion or extension. Place a small pillow or rolled towel under the lower back if needed to maintain lumbar curve. Protect heels by placing heel-protection boots or a pillow under the calves so heels float free of the mattress. Keep arms at the sides with slight elbow flexion and palms facing up or inward — never allow the shoulders to roll inward. Sacrum and occiput are under the greatest pressure in this position.

Lateral (Side-Lying) — Left and Right

Roll the patient onto one side at approximately a 30-degree tilt (not fully 90 degrees, which places full weight on the trochanter). Place a pillow between the knees and ankles to prevent medial bony contact. Support the upper arm on a pillow so the shoulder does not roll forward and compress the chest. Keep the head aligned with the spine — no lateral neck flexion. Tuck a positioning wedge or pillow behind the back to maintain the 30-degree angle. The greater trochanter of the lower hip and the ear on the lower side are primary risk sites.

Fowler's Position (Head of Bed 45–60 Degrees)

This is a semi-seated position used for eating, conversation, and patients with respiratory difficulty. Raise the head of the bed to 45–60 degrees. Flex the knees slightly by raising the foot of the bed or placing a pillow under the knees — this prevents the patient from sliding down and reduces shear force on the sacrum. Support the arms on pillows to prevent shoulder internal rotation. The sacrum and heels remain at risk; verify they are offloaded.

Semi-Fowler's Position (Head of Bed 30–45 Degrees)

Same principles as Fowler's but with the head elevated to 30–45 degrees. This angle is commonly used for patients on tube feeding, those who are post-operative, and patients at risk of aspiration. Shear force on the sacrum is present at this angle as well — knee flexion and anti-shear positioning remain essential.

Two-Person Logroll

A logroll moves the patient as a single rigid unit, keeping the spine in alignment. It is used when spinal injury is known or suspected, or whenever a large or dependent patient must be turned safely.

Steps:

1. Two CNAs stand on opposite sides of the bed, or both on the same side if turning toward one CNA.

2. Cross the patient's arms over the chest.

3. The leading CNA places hands on the patient's far shoulder and hip; the second CNA controls the legs and lower trunk.

4. On a synchronized count of three, both CNAs roll the patient toward them in one smooth, coordinated movement — no twisting of the head, neck, or trunk relative to each other.

5. Maintain head and neck in line with the torso throughout.

6. Inspect and care for the skin, then position with pillows before leaving the patient.

Never rush a logroll. Miscommunication between the two CNAs is the leading cause of spinal misalignment during the move.

Pressure Injury Prevention Rationale Summary

• Offload prominences with pillows, foam wedges, or heel boots — do not rely on mattress padding alone.
• Limit head-of-bed elevation to the lowest angle clinically safe; every extra degree of elevation increases sacral shear.
• Keep skin clean and dry — moisture from perspiration or incontinence softens skin and accelerates breakdown.
• Inspect skin at each turn and report early changes immediately.
• Document every repositioning event so the entire care team can track the schedule.

Mastering these skills protects your patients from one of the most preventable complications in health care and reflects your core responsibility as a nursing assistant.