What are the two bones sticking out in the lower back just above the coccyx called?
The two bones sticking out in the lower back just above the coccyx are called the posterior superior iliac spines (PSIS). They are part of the pelvis and are located at the top of the ilium, the largest bone in the pelvis. The PSIS can be felt by placing your hands on your lower back and feeling for the two bony protrusions.
The PSIS are important for a number of reasons. They provide attachment points for muscles that help to stabilize the pelvis and spine. They also help to support the weight of the upper body when you are sitting or standing. Additionally, the PSIS are used as landmarks for a number of medical procedures, such as epidural injections.
FAQs
- What is the difference between the PSIS and the ASIS? The ASIS (anterior superior iliac spines) are located at the front of the pelvis, while the PSIS are located at the back.
- Can the PSIS be injured? Yes, the PSIS can be injured if you fall or receive a blow to the lower back.
- What are the symptoms of a PSIS injury? Symptoms of a PSIS injury can include pain, swelling, and bruising.
- How is a PSIS injury treated? Treatment for a PSIS injury typically involves rest, ice, and physical therapy.
- Can a PSIS injury be prevented? There is no sure way to prevent a PSIS injury, but you can reduce your risk by wearing protective gear when you are engaging in activities that could put you at risk for a fall or blow to the lower back.
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