Disc degeneration remains a key cause of chronic low back pain and the pain often persists despite surgery. NIH-funded basic science and preclinical studies are investigating molecular-level mechanisms that cause discs in the spine to degenerate, as well as protective mechanisms involved in disc remodeling that may diminish with advancing age. Such studies may help identify future therapeutic strategies to block degenerative mechanisms or promote remodeling processes. NIH also is funding early research on stem cell approaches to promote disc regeneration and rejuvenate cells of the nucleus pulposus, the jelly-like substance in the center of intervertebral discs that loses water content as people age.
Located deep in the front of the hip and connecting the leg, pelvis, and abdomen, the hip flexors— surprise, surprise— flex the hip. But despite being some of the most powerful muscles in our bodies (with a clearly important role), it’s easy to neglect our poor hip flexors— often without even knowing it. It turns out just working at a desk all day (guilty!) can really weaken hip flexors since they tend to shorten up while in a seated position. This tightness disrupts good posture and is a common cause of lower back pain. Weakened hip flexors can also increase the risk of foot, ankle, and knee injuries (especially among runners) Hip muscle weakness and overuse injuries in recreational runners. Niemuth, P.E., Johnson, R.J., Myers, M.J., et al. Rocky Mountain University of Health Professions, Provo, VT. Clinical Journal of Sport Medicine, 2005 Jan; 15 (1): 14-21.. So be sure to get up, stand up every hour or so! And giving the hip flexors some extra attention is not just about injury prevention. Adding power to workouts, working toward greater flexibility, and getting speedier while running is also, as they say, all in the hips The effect of walking speed on muscle function and mechanical energetics. Neptune, R.R., Sasaki, K., and Kautz, S.A. Department of Mechanical Engineering, The University of Texas, Austin, TX. Gait & Posture, 2008 Jul; 28 (1): 135-43..
Intervertebral disc degeneration is one of the most common mechanical causes of low back pain, and it occurs when the usually rubbery discs lose integrity as a normal process of aging. In a healthy back, intervertebral discs provide height and allow bending, flexion, and torsion of the lower back. As the discs deteriorate, they lose their cushioning ability.

The hip joint is designed to withstand repeated motion and a fair amount of wear and tear. This ball-and-socket joint—the body’s largest ball-and-socket joint—fits together in a way that allows for fluid movement. While many causes of hip pain can arise from the joint itself, there are numerous structures surrounding the hip that can also be the source of pain.

While leg lifts, certain ab exercises, and even hula hooping can all help work the hips, the hip flexors can still be a tricky part of the body to stretch Kinetics of hula hooping: An inverse dynamics analysis. Cluff, T., Robertson, D.G., and Balasubramaniam, R. School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada. Human Movement Science, 2008 Aug; 27 (4): 622-35.. To get them even stronger and more flexible, try these five simple hip flexor stretches:
There are a number of ways to classify low back pain with no consensus that any one method is best.[5] There are three general types of low back pain by cause: mechanical back pain (including nonspecific musculoskeletal strains, herniated discs, compressed nerve roots, degenerative discs or joint disease, and broken vertebra), non-mechanical back pain (tumors, inflammatory conditions such as spondyloarthritis, and infections), and referred pain from internal organs (gallbladder disease, kidney stones, kidney infections, and aortic aneurysm, among others).[5] Mechanical or musculoskeletal problems underlie most cases (around 90% or more),[5][34] and of those, most (around 75%) do not have a specific cause identified, but are thought to be due to muscle strain or injury to ligaments.[5][34] Rarely, complaints of low back pain result from systemic or psychological problems, such as fibromyalgia and somatoform disorders.[34]
Before discussing different strength and mobility exercises, we should first look at activation exercises for your Gluteus Maximus (referred to as the glutes) muscles. The reason for needing to activate your glutes is simple—as a population, we spend way too much time sitting, and as a result, what happens is what noted spinal researcher Stuart McGill terms gluteal amnesia—your glute muscles can "go to sleep" and not function properly.
Start in a runner’s lunge, right leg forward with knee over ankle and left knee on ground with top of your foot flat on the mat. Slowly lift torso and rest hands lightly on right thigh. Lean hips forward slightly, keeping right knee behind toes, and feel the stretch in the left hip flexor. Hold here, or for a deeper stretch, raise arms overhead, biceps by ears. Hold for at least 30 seconds, then repeat on opposite side.
Low back pain is not a specific disease but rather a complaint that may be caused by a large number of underlying problems of varying levels of seriousness.[25] The majority of LBP does not have a clear cause[1] but is believed to be the result of non-serious muscle or skeletal issues such as sprains or strains.[26] Obesity, smoking, weight gain during pregnancy, stress, poor physical condition, poor posture and poor sleeping position may also contribute to low back pain.[26] A full list of possible causes includes many less common conditions.[5] Physical causes may include osteoarthritis, degeneration of the discs between the vertebrae or a spinal disc herniation, broken vertebra(e) (such as from osteoporosis) or, rarely, an infection or tumor of the spine.[27]
You could do these moves all together as a single workout, or, as Miranda suggests, split them in half and do the first part one day and the second part another—"but do the warm-up with each one," she says. Those first three moves are meant to not only "wake up" the muscles, but also get your brain ready for the movement patterns to come. For that reason, she says that doing the first three moves "would be a fantastic warm-up before any workout."
Mechanical pain. By far the most common cause of lower back pain, mechanical pain (axial pain) is pain primarily from the muscles, ligaments, joints (facet joints, sacroiliac joints), or bones in and around the spine. This type of pain tends to be localized to the lower back, buttocks, and sometimes the top of the legs. It is usually influenced by loading the spine and may feel different based on motion (forward/backward/twisting), activity, standing, sitting, or resting.

Treatment options include physical therapy, back exercises, weight reduction, steroid injections (epidural steroids), nonsteroidal anti-inflammatory medications, rehabilitation and limited activity. All of these treatment options are aimed at relieving the inflammation in the back and irritation of nerve roots. Physicians usually recommend four to six weeks of conservative therapy before considering surgery.
A complete medical history and physical exam can usually identify any serious conditions that may be causing the pain. During the exam, a health care provider will ask about the onset, site, and severity of the pain; duration of symptoms and any limitations in movement; and history of previous episodes or any health conditions that might be related to the pain. Along with a thorough back examination, neurologic tests are conducted to determine the cause of pain and appropriate treatment. The cause of chronic lower back pain is often difficult to determine even after a thorough examination.
If you’re lucky, you won’t notice your hips are tight until you’re trying to do the Half Pigeon pose in your yoga class. But if you’re not so fortunate, your tight hips are making themselves known every time you so much as walk to the bathroom or sit on the couch—expressing themselves in the form of lower back pain and muscle stiffness. Tight hips can even shorten your stride, slowing your 5K goal time!
Nucleoplasty, also called plasma disc decompression (PDD), is a type of laser surgery that uses radiofrequency energy to treat people with low back pain associated with mildly herniated discs. Under x-ray guidance, a needle is inserted into the disc. A plasma laser device is then inserted into the needle and the tip is heated to 40-70 degrees Celsius, creating a field that vaporizes the tissue in the disc, reducing its size and relieving pressure on the nerves. Several channels may be made depending on how tissue needs to be removed to decompress the disc and nerve root.

Emerging technologies such as X-rays gave physicians new diagnostic tools, revealing the intervertebral disc as a source for back pain in some cases. In 1938, orthopedic surgeon Joseph S. Barr reported on cases of disc-related sciatica improved or cured with back surgery.[100] As a result of this work, in the 1940s, the vertebral disc model of low back pain took over,[99] dominating the literature through the 1980s, aiding further by the rise of new imaging technologies such as CT and MRI.[100] The discussion subsided as research showed disc problems to be a relatively uncommon cause of the pain. Since then, physicians have come to realize that it is unlikely that a specific cause for low back pain can be identified in many cases and question the need to find one at all as most of the time symptoms resolve within 6 to 12 weeks regardless of treatment.[99]
How to: Sit on the floor with knees bent so that your right shin is positioned in front of you, your left shin behind you and your left hip dropped all of the way to the floor (a). Inhale and press your left hip forward until you feel a stretch in the front of your hip (b). Exhale and press left hip back to the floor. That’s one rep (c). Complete six to eight reps, working each time to increase your range of motion. Repeat on the opposite side.
Moist heat may help relax your muscles. Put moist heat on the sore area for 10 to 15 minutes at a time before you do warm-up and stretching exercises. Moist heat includes heat patches or moist heating pads that you can buy at most drugstores, a wet washcloth or towel that has been heated in a microwave or the dryer, or a hot shower. Don’t use heat if you have swelling.
Imagine not being able to climb stairs, bend over, or even walk Changes in hip joint muscle-tendon lengths with mode of locomotion. Riley, P.O., Franz, J., Dicharry, J., et al. Center for Applied Biomechanics, University of Virginia, Charlottesville, VA. Gait & Posture, 2010 Feb; 31 (2): 279-83.. All pretty essential if you ask us! But that’s what our bodies would be like without our hip flexor muscles. Never heard of ‘em? It’s about time we share why they’re so important, how your desk job might be making them weaker (ah!), and the best ways to stretch them out.
Tendinitis: Symptoms, causes, and treatment Tendinitis is the inflammation of a tendon caused by repetitive overuse or injury. It can occur in an elbow, wrist, finger, thigh, or elsewhere. Tendinitis includes a range of disorders, such as housemaid's knee, tennis elbow, and trigger thumb. This article explores symptoms, diagnosis, treatment, and prevention. Read now

When hip pain comes from muscles, tendons, or ligament injuries, it typically come from overuse syndromes. This can come from overusing the strongest hip muscles in the body such as iliopsoas tendinitis; it can come from tendon and ligament irritations, which typically are involved in snapping hip syndrome. It can come from within the joint, which is more characteristic of hip osteoarthritis. Each of these types of pain present in slightly different ways, which is then the most important part in diagnosing what the cause is by doing a good physical examination.