Physical Therapy Assistant Practice Exam

Which bony prominence is NOT susceptible to skin breakdown in the supine position?

1. Patella

2. Anterior superior iliac spine

3. Spinous processes

4. Anterior shoulder

The correct answer is: Spinous processes

The spinous processes are not considered a bony prominence that is susceptible to skin breakdown when a person is in the supine position. This is primarily due to their location along the midline of the back, where soft tissue structures such as muscle and fat provide a buffer against pressure directly on the bony prominences. In contrast, areas like the patella, anterior superior iliac spine, and anterior shoulder have less protective soft tissue and are more prominent, making them more vulnerable to pressure ulcers when confined in a supine position for extended periods. Understanding this context is important in preventing pressure injuries in patients who may be immobile. By recognizing which bony prominences are at greater risk, healthcare professionals can implement strategies to redistribute pressure, adjust positioning, and use supportive devices, thereby safeguarding the patient's skin integrity.