At a Glance: Pressure injuries commonly develop on bony areas of the body where prolonged pressure occurs against surfaces. The most frequent locations include the sacrum, heels, hips, and other areas where bones are close to the skin.
Pressure injuries, also known as decubitus ulcers, pressure ulcers, or bedsores, occur when constant pressure damages the skin and underlying tissue. These injuries develop when body weight presses against a surface for extended periods, reducing blood flow to that area. This restricted blood flow leads to tissue damage that can range from mild skin discoloration to deep wounds affecting muscles and bones.
When patients and caregivers know where to look for early warning signs, they can take action before serious damage occurs. Knowing which body parts are most likely to develop pressure injuries helps you identify them quickly and use appropriate support surfaces to protect vulnerable areas.
Common Pressure Points and Risk Areas
Pressure injuries commonly develop in specific areas where bones are close to the skin, creating pressure points when lying down or sitting for extended periods. These high-risk areas require special attention during patient care and positioning.
Lower Body Pressure Points
- Heels: These are particularly vulnerable due to their bony prominence and limited padding. When lying flat, heels often bear direct pressure against bed surfaces
- Ankles: These face similar risks as the heels against bed rails or other surfaces, particularly the bony areas on either side
- Knees: These become pressure points when lying on one side, especially the sides and back, become pressure points when lying on one side
- Hips: Since these have a broad, bony structure, they are prone to injury when patients lie on their sides for extended periods
Back and Spine Areas
- Sacrum (tailbone): This is one of the most common sites for pressure injuries, creating multiple pressure points along the back
- Shoulder Blades: These become vulnerable when patients lie flat or lean back in chairs
Other Vulnerable Locations
- Elbows: These frequently develop pressure injuries in patients who use them to reposition themselves
- Back of the Head: This becomes vulnerable during extended periods of lying flat, particularly in patients with limited mobility
- Ears: Since these have a cartilage structure and fragile skin covering, they are susceptible to pressure damage when lying on one side
These pressure points require regular monitoring and frequent position changes to prevent tissue damage. The use of proper positioning techniques and support helps distribute pressure more evenly across these vulnerable areas.
Understanding Why These Areas are Vulnerable
Certain parts of our body are more likely to develop pressure injuries due to specific anatomical and environmental factors that come together to create higher-risk conditions. These vulnerable areas share common characteristics that make them particularly susceptible to tissue damage.
Bone Locations
Areas where bones are close to the surface, with minimal tissue padding between skin and bone, face the greatest risk. In these locations, pressure from external surfaces concentrates on a smaller area, creating more intense forces against delicate tissues. The thin layer of protection makes these spots especially vulnerable when someone remains in one position for extended periods.
Reduced Mobility
Several circumstances increase the likelihood of pressure injuries. People with limited mobility, whether due to illness, surgery, or other medical conditions, cannot naturally shift positions to relieve pressure points. Extended bed rest makes this problem worse since gravity consistently pushes body weight against the same areas. Even sitting normally can create sustained pressure, particularly on the tailbone and sitting bones.
Surfaces
The type of surface a person rests on significantly influences pressure injury risk.
- Standard Mattresses: These may not effectively distribute body weight, creating pressure points where bones press against the surface.
- Traditional Chairs: These can concentrate force on small areas, especially if someone sits for long periods without moving.
- Medical Devices: Oxygen tubes, casts, or braces can also create pressure points where they contact the skin, requiring careful monitoring of these areas.
Surface assessment and frequent repositioning become particularly important for preventing tissue damage in these vulnerable locations. Regular movement helps maintain healthy blood flow to at-risk areas, while specialized support surfaces can help distribute pressure more evenly across the body.
Prevention and Protection Strategies
Patients with conditions that cause immobility, such as spinal cord injuries and strokes, are at a higher risk of developing a pressure ulcer. Poor nutrition, vascular diseases, and sensory deficits are also significant risk factors. However, at-risk individuals can protect themselves with effective prevention.
Positioning
Regular position changes are one of the most effective ways to prevent pressure injuries. For individuals who are bedbound, changing positions every 2-3 hours is recommended, while those in wheelchairs should shift their weight every 15-30 minutes. However, some studies recommend position changes every 4-6 hours when using specialized support surfaces.
When repositioning someone in bed, use proper lifting devices and techniques – never drag the person across the surface. Effective positions include lying fully on the back, on either side at a 30-degree angle, and the prone position when medically appropriate.
Skin Monitoring
Skin monitoring requires a systematic approach. Perform daily head-to-toe skin assessments, paying special attention to bony prominences and areas with medical devices. Watch for early warning signs such as redness that doesn’t fade, changes in skin temperature, swelling, or hardness. When documenting skin changes, note the location, size, and appearance of the affected areas. Taking regular photos (with proper consent) can help track changes over time.
Support Surfaces
Protective measures start with selecting the right support surfaces. A high-quality pressure-reducing mattress, wheelchair cushion, or heel protector can help distribute weight evenly across the body. Bedding should be smooth and wrinkle-free, with moisture-wicking materials that keep skin dry. Specialized devices like pillows, wedges, and heel elevation boots can help offload pressure from high-risk areas.
For people at high risk of pressure injuries, using a combination of preventative measures can protect against complications that might require surgical intervention, including necrotic tissue and autonomic dysreflexia. Working with healthcare professionals to develop individualized preventive measures helps ensure all risk factors are properly addressed.
Prevent Pressure Wounds with Support Surfaces from Ethos Therapy Solutions
The human body has several areas particularly vulnerable to pressure injuries, including the tailbone, heels, elbows, and other bony prominences. Understanding higher-risk areas allows patients and caregivers to take proactive steps in preventing painful pressure injuries through regular repositioning and proper support surfaces.
Specialized support surfaces play a significant role in pressure injury prevention by redistributing pressure and reducing friction on vulnerable areas. Air fluidized therapy beds offer advanced pressure redistribution, helping to prevent tissue breakdown and support healing.
If you or a loved one is at risk for pressure sores, Ethos Therapy Solutions offers state-of-the-art air fluidized therapy beds designed to protect vulnerable areas and promote wound healing. Our dedicated team is ready to answer your questions and find the right solution for your needs.
Contact Ethos to learn more about our pressure injury prevention solutions.