Office Closure Notice

Effective 02-01-2023 Guillermo J. Bernal MD will be joining the practice of Princeton Brain, Spine & Sports Medicine (PBSSM) at 104 Pheasant Run Drive, Suite 105, Newtown, PA 18940, Phone 215-741-3141; and also at 558 Lawrence Square Boulevard S., Lawrence Township, NJ 08646, Phone 609-585-6100. Bucks Rehabilitation will be closing its doors to patients on 01-31-2023 after nearly 29 years.

I will be providing the same level of quality care and services - just in a different location under a different name. My current phone number of 215-968-4901 as well as fax numbers of 215-968-9718 and 267-274-2314 will be forwarded to the new practice. I am excited for this new chapter and look forward to continuing to care for all my longstanding patients as well as new patients at my new location.

If you have any questions about this transition, please contact my manager Barbara at 215-968-4901, Ext 107.

Trigger Point Injections


Muscles account for more than 60% of the human body mass and make up the largest part of our bodies. They are responsible for all movement of the human body. With such an enormous responsibility, care must be taken with them since muscles are subjected to wear and tear, fatigue, overuse, and repetitive injury.

When we want to use our muscles, we voluntarily contract them – we “will” them to move. However, sometimes the entire muscle contracts involuntarily – this is called a spasm. Muscles are also subject to another condition known as Trigger Point.

Trigger Point is a painful area that contains knots of muscle which form when muscles involuntarily do not relax. Such knots can be felt under the skin. The muscle remains tight, which weakens the muscle, puts stress on the points where the muscles attach to the bones, and creates pain and dysfunction within the muscle. Trigger points may irritate the nerves around them and cause referred pain, or pain that is felt in another part of the body such as joints. They also may co-occur with chronic musculoskeletal pain disorders.

Trigger points have been shown to be the most common cause of musculoskeletal pain.

Trigger point injections (TPI) may be an option in treating pain for some patients. Not all trigger points require injection or needling. Many active trigger points will respond to physical therapy, especially in the early stages of trigger point formation. However, for chronic trigger points, trigger point injection and needling is an effective treatment.

As the recognized muscle experts, physiatrists are extensively trained in trigger point injections.