Archive for January, 2014

Primary Care Physicians (PCPs) vs. Pain

 

We have always encouraged a step-care model for treating our patients in pain. Start with the least expensive, least invasive procedures before trying the more expensive, complicated, and invasive procedures.  So when you first experience pain, your primary care physician, or PCP, would be your first stop.

The Institute of Medicine (IOM) made the following key recommendations[1]:

  1. Use non-steroidal anti-inflammatory medications (NSAIDs) and acetaminophen (Tylenol) as first line pain medication.
  2. Referral from primary care physicians (PCPs) to specialists for back pain was not recommended. Referral  to physical therapists was recommended.
  3. Use of imaging, such as MRI, CT scan, or x-ray, were not recommended.

This may be easier said than done.

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Will my back pain go away?

Although Low Back Pain (LBP) is thought to affect around 80% of individuals, it is also thought to be self limited and get better quickly (within weeks). Studies of patient populations however suggest that it is actually a more serious problem. Although most patients who experience back pain do not see a doctor, 60-80% of those that do are still reporting pain one year later and in those whose pain has disappeared, 20% will have a recurrence within months.

A large number of patients (40-50%) will not see a medical physician for their pain preferring to receive alternative treatment, in large part due to the inability of our current model to help many of the patients suffering with lower back pain and neck pain. If there were a test to determine who was at risk not to have their pain eliminated and to be become a chronic sufferer, this could alert the clinician to employ more than one approach to ease the pain.  Published predictive studies are too different to compare outcomes although  the following factors are consistently found to predict poor outcome in the reviewed studies: older age, poor general health, increased psychological or psychosocial stress, poor relations with colleagues, physically heavy work, worse baseline functional disability, sciatica, and the presence of compensation.

Complimentary and alternative medicine (CAM) is used by 40-60% of patients in the US to deal with their back pain . The mechanism for effectiveness of the various CAM approaches deserves study as does the role of muscles in low back pain. The absence of a standardized routine examination of muscles’ strength, flexibility, and tenderness in patients with back pain ignores an important variable especially in light of the fact that the most common diagnosis for acute back pain is Non-specific Low Back Pain,  referring to sprains and strains of muscles and other soft tissue.

The bottom line is that our current system of care for lower back pain is sorely in need of review and revision.

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Conditioned Pain Modulation

Have you ever noticed that pain in one area took your attention away from pain in another spot?  For example, you were feeling back pain and then jammed your toe, and your back pain diminished or went away.  As the toe pain reduced, the back pain reappeared.  Conditioned Pain Modulation (CPM), formerly known as DNIC (diffuse noxious inhibitory control), is the phenomenon where pain in one area inhibits pain in a different area of the body.

Another example is seen in patients who have pain that is noticeably worse on one side of the body than the other.  Once pain is treated on their “bad” side, their “good” side seems to get much worse.  In this case, pain on the “good” side was always present, but becomes more noticeable once the worst pain was addressed.

In fibromyalgia syndrome patients, there appears to be impaired CPM. [i]  CPM is one reason why understanding a patient’s pain complaint is challenging.


[i] Davis, Mellar P. “The Clinical Importance of Conditioning Pain Modulation: A Review and Clinical Implications.” Research and Development of Opioid-Related Ligands (2013): n. pag. Print.

 

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Muscles in the shoulder girdle were the cause of pain

A study in Clinical Orthopaedics & Related Research [468(10):2678-89], reports that over time the function of the shoulder deteriorates in a significant number of patients who underwent rotator cuff repair, despite continued pain relief in many of the same patients.  The study found that even if greater function was achieved in the months directly following surgery, both strength and range of motion decreased to less than preoperative values even though pain was alleviated.shoulder pain blog-Norman Marcus Pain Institute

I treated a 60 year old man with a diagnosis of rotator cuff tear. Because of severe shoulder pain and restriction of movement in his shoulder, he was unable to brush his teeth, hold utensils to eat, or comb his hair. He was scheduled for surgery to repair his rotator cuff. He was found on examination to have six muscles in his shoulder girdle that were causing his pain.

These muscles were injected over the course of 3 weeks and following each injection a physical therapy protocol was used that restored his range of motion. His pain was eliminated. His surgery was cancelled. He remained pain free for the two years that he was followed.

In view of the findings reported in the paper and my results with this patient and others diagnosed with shoulder pain from rotator cuff tear or impingement syndrome, it is important to evaluate muscles as a source of pain and function impairment prior to performing surgical repair.

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