At some point during our adult lives, most people experience bouts of back pain. Chronic back pain is pain that persists after an injury or surgery where the source is hard to determine. Acute pain can develop into Chronic Pain for a number of reasons. Once these reasons have been determined through a medical evaluation, treatment can focus on reducing back pain and improving mood and function.
Back pain and related symptoms rank among the second most frequent medical complaints. Disability from low back pain is second only to the common cold as a cause of lost work time and is the most common cause of disability in people under 45 years of age.
In the United States, the lifetime prevalence of back pain is approximately 80%, with a one-year prevalence rate of 15% to 20%„the highest prevalence is in the 45 to 64 age group.
In reality, the natural history of acute low back pain is very favorable and the same is true for sciatica (an inflammation of the sciatic nerve, characterized by pain and tenderness through the thigh and leg):
- 60% recover in 1 to 3 weeks;
- 90% recover in 6 to 8 weeks; and
- 95% recover in 12 weeks.
- Serious causes of low back pain (e.g. cancer) are uncommon (less than 1%).
The onset of acute low back pain most often is the result of mechanical damage due to excessive and prolonged poor posture and mechanics, a sedentary lifestyle and inadequate conditioning. Seemingly trivial stress such as bending over, sneezing or coughing can produce a herniated disk when superimposed on chronic wear and tear. People in a sedentary occupation have a high risk of herniating a disk.
During the flexion that occurs with sitting, intradiscal pressure is greatest and the disc exerts pressure on the thinnest, least supported area of the supporting ligament known as the annulus fibrosus. As a result, the disk can herniate.
Mechanical low back pain may be defined as pain secondary to overuse of a normal anatomic structure (muscle strain) or pain secondary to injury or deformity of an anatomic structure (herniated nucleus pulporus). Mechanical low back pain is usually aggravated by static loading of the spine (prolonged sitting or standing), long levered activities (e.g. vacuuming) or levered postures (bending forward). It is eased when the spine is balanced by multidirectional forces (e.g., walking) or when the spine is unloaded (e.g., reclining).
The history and physical examination is the first step in the evaluation and management of low back pain. Based on this information and specific guidelines, x-rays may be ordered; however, not every patient with low back pain requires x-rays.
Since the natural history of low back pain is favorable, most patients can start initial and usually successful therapy without the benefit of x-rays, a CT scan or MRI scan. Though radiographic evaluation may identify anatomic alterations in the lumbar spine, studies have shown that these may correlate poorly with the presence or severity of low back pain. The physician must take all the clinical data together and formulate a diagnosis and treatment plan based upon all the collected information. The physician does not want to intervene with inappropriate surgery nor overlook the possibility of a serious complication associated with a mechanical disorder (cauda equina syndrome) or a secondary cause of back pain (malignancy); the latter can be identified in the history and physical by certain "red flags."
The majority of patients will improve with controlled physical activity, physical therapy, nonaddictive non-steroidal anti-inflammatory drugs, and, in appropriate patients, muscle relaxants. Surgical invention is reserved for the patient who has not shown improvement on conservative therapy and has undeniable symptoms and signs (sciatica) associated with a mechanical disorder (herniated disk) that can be corrected by surgical intervention.
Chronic low back pain is a complex disorder that must be managed with a multi-disciplinary approach that addresses the physical, psychologic and socioeconomic aspects of the illness. Fortunately, chronic low back pain affects only a small percentage of patients.
Obesity and smoking correlate unfavorably with low back pain and may adversely affect the progression of the disorder. Overall physical fitness will correlate favorably with recovery from low back pain and return to work. Training, education and ergonomic intervention may reduce the incidence of back disorders.
The competitive athlete and most individuals who exercise regularly maintaining a level of fitness, are less prone to lumbar spine injury and problems due to the strength and flexibility of supporting structures. These structures include strong abdominal and lumbar paraspinal muscles for support, and flexible gluteal and hamstring muscles.
Problems involving the lumbar spine are rare in athletes and account for less than 10% of sports-related injuries. Sports such as gymnastics, football and racquet sports have a higher incidence of associated lumbar spine problems related to repetitive twisting and bending motions. Most injuries are minor, self-limited and respond quickly to conservative treatment. The incidence of lumbar spine problems with the casual or weekend athlete may be higher and related to the individual's level of fitness. Prevention through proper conditioning and technique is important.
What can I do if I have acute low back pain?
The key to recovering from acute (abrupt, intense pain that subsides after a relatively short period) low back pain is maintaining the hollow or lordosis (the normal curvature of the spine). Supporting the hollow of your back will help shorten your recovery time.
For 10 to 20 days after you experience acute low back pain, follow these guidelines:
- Sit as little as possible, and only for short periods of time (10 to 15 minutes).
- Sit with a back support (such as a rolled-up towel) placed at the hollow of your back.
- Keep your hips and knees at a right angle (use a foot rest or stool if necessary). Your legs should not be crossed and your feet should be flat on the floor.
Here's how to find a good sitting position when you're not using a back support or lumbar roll:
- Sit at the end of your chair and slouch completely.
- Draw yourself up and accentuate the curve of your back as far as possible.
- Hold for a few seconds.
- Release the position slightly (about 10 degrees). This is a good sitting posture.
- Sit in a high-back chair with arm rests. Sitting in a soft couch or chair will tend to make you round your back and won't support the hollow of your back.
- At work, adjust your chair height and work station so you can sit up close to your work and tilt it up at you. Rest your elbows and arms on your chair or desk, keeping your shoulders relaxed.
- When sitting in a chair that rolls and pivots, don't twist at the waist while sitting. Instead, turn your whole body.
- When standing up from the sitting position, move to the front of the seat of your chair. Stand up by straightening your legs. Avoid bending forward at your waist. Immediately stretch your back by doing 10 standing backbends.
- Use a back support (lumbar roll) while sitting or driving in the car.
- Move the seat close to the steering wheel to support the hollow of your back.
- Stand with your head up, shoulders straight, chest forward, weight balanced evenly on both feet and your hips tucked in.
- Avoid standing in the same position for a long time.
- If possible, adjust the height of the work table to a comfortable level.
- When standing, try to elevate one foot by resting it on a stool or box. After several minutes, switch your foot position.
- While working in the kitchen, open the cabinet under the sink and rest one foot on the inside of the cabinet. Change feet every 5 to 15 minutes.
Stooping, Squatting, Kneeling
Decide which position to use. Kneel when you have to go down as far as a squat but need to stay that way for awhile. For each of these positions, face the object, keep your feet apart, tighten your stomach muscles and lower yourself using your legs.
- Try to avoid lifting objects if at all possible.
- If you must lift objects, do not try to lift objects that are awkward or are heavier than 30 pounds.
- Before you lift a heavy object, make sure you have firm footing.
- To pick up an object that is lower than the level of your waist, keep your back straight and bend at your knees and hips. Do not bend forward at the waist with your knees straight.
- Stand with a wide stance close to the object you are trying to pick up and keep your feet firm on the ground. Tighten your stomach muscles and lift the object using your leg muscles. Straighten your knees in a steady motion. Don't jerk the object up to your body.
- Stand completely upright without twisting. Always move your feet forward when lifting an object.
- If you are lifting an object from a table, slide it to the edge to the table so that you can hold it close to your body. Bend your knees so that you are close to the object. Use your legs to lift the object and come to a standing position.
- Avoid lifting heavy objects above waist level.
- Hold packages close to your body with your arms bent. Keep your stomach muscles tight. Take small steps and go slowly.
- To lower the object, place your feet as you did to lift, tighten stomach muscles and bend your hips and knees.
- Use a foot stool or chair to bring yourself up to the level of what you are reaching.
- Get your body as close as possible to the object you need.
- Make sure you have a good idea of how heavy the object is you are going to lift.
- Use two hands to lift.
Sleeping and Laying Down
- Select a firm mattress and box spring set that does not sag. If necessary, place a board under your mattress. You can also place the mattress on the floor temporarily if necessary.
- If you've always slept on a soft surface, it may be more painful to change to a hard surface. Try to do what's most comfortable for you.
- Use a back support (lumbar support) at night to make you more comfortable. A rolled sheet or towel tied around your waist may be helpful.
- Try to sleep in a position which helps you maintain the curve in your back (such as on your back with a lumbar roll or on your side with your knees slightly bent). Do not sleep on your side with your knees drawn up to your chest.
- When standing up from the lying position, turn on your side, draw up both knees and swing your legs on the side of the bed. Sit up by pushing yourself up with your hands. Avoid bending forward at your waist.
Other Helpful Hints
- Avoid activities that require bending forward at the waist or stooping.
- When coughing or sneezing, try to stand up, bend slightly backwards to increase the curve in your spine when you cough or sneeze.