The hip flexors play an important role in everyday mobility and exercise. Involved in pulling the knee toward the hip, most movements either directly or indirectly use the hip flexors. That’s why even the slightest injury can cause great discomfort. Learn how you can recover from a hip flexor injury, and what precautions can be taken to avoid them.
2016 — More editing, more! Added some better information about pain being a poor indicator, and the role of myofascial trigger points. This article has become extremely busy in the last couple months — about 4,000 readers per day, as described here — so I am really polishing it and making sure that it’s the best possible answer to people’s fears about back pain.
Iliopsoas syndrome, which is also called psoas syndrome or iliopsoas tendonitis, occurs when the iliopsoas muscles are injured. Lower back pain is the most common symptom; however, pain can also occur in the hip, thigh, or leg. The iliopsoas bursa, which is a fluid-filled sac located on the inside of the hip that reduces rubbing and friction, is also likely to become inflamed due to the proximity of the two structures. When this happens, the inflamed bursae will make it difficult to move.
But how can you tell? It can be tricky. This is a concise, readable guide to symptoms that need better-safe-than-sorry investigation with your doctor. (It’s basically just a plain English version of clinical guidelines for doctors.9) In other words, this article explains the difference between “dangerous” and “just painful” as clearly as possible. Tables, checklists, and examples ahead.
As the structure of the back is complex and the reporting of pain is subjective and affected by social factors, the diagnosis of low back pain is not straightforward.[5] While most low back pain is caused by muscle and joint problems, this cause must be separated from neurological problems, spinal tumors, fracture of the spine, and infections, among others.[3][1]
The Reclined Hip Stretch is a Pilates mat exercise that is one of the best stretching exercises for the outside of the hip. It looks like a pretzel move, but once you get it figured out, it feels great. It is easy and you can control how intense the stretch is. It is a good warm-up stretch, and you might use it as one of the stretches you do each morning, especially if you have tight hips.
In this study, one patient with sciatica was sent for ten MRIs, which produced 49 distinct “findings,” 16 of them unique, none of which occurred in all ten reports. On average, each radiologist made about a dozen errors, seeing one or two things that weren’t there and missing about ten things that were. Yikes. Read a more detailed and informal description of this study.
Endometriosis (when the uterus lining grows somewhere else) can cause pelvic tenderness, which some women describe as hip pain. Pain from the back and spine also can be felt around the buttocks and hip, Siegrist says. Sciatica, a pinched nerve, typically affects one side of the body and can cause pain in the back of the right or left hip — the pain from sciatica can start in your lower back and travel down to your buttocks and legs.
How to: Stand tall, feet slightly wider than shoulder-width apart, toes pointed out at 45-degree angles (a). Keep your back straight, knees over toes and your weight in the heels of your feet (b). Engage your glutes and thighs as you lower into a deep squat until thighs parallel to the ground (or as close as you can get them) (c). Powering through your heels, push up to return to starting position (d). Repeat.
En español | You probably know someone who’s traded a worn-out hip bone for ceramic or cobalt chrome. Some 370,000 Americans undergo hip-replacement surgery each year (the average age for this is 65). But the operation isn’t a cure-all: At least 1 in 10 hip-replacement recipients will need a second procedure to repair a dislocation, mechanical failure or infection. And hip pain, with or without surgery, can be a struggle. Chronic hip pain was a factor in the accidental opioid overdoses that claimed the lives of musicians Tom Petty, 66, and Prince, 57.
The good news is that there are plenty of good hip stretches out there that you can do to relieve discomfort, decrease tightness, and increase mobility in your hips. Since your hips are involved in so many of the movements you make (both inside and outside of the gym) stretching them is a great way to keep them feeling good and ready to work for you. Add some of the 12 hip stretches Atkins demos below to the end of your workout, or spend 10 minutes each day just doing a few of them, to improve mobility in your hips.
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:
3. Tendinitis and bursitis Many tendons around the hip connect the muscles to the joint. These tendons can easily become inflamed if you overuse them or participate in strenuous activities. One of the most common causes of tendinitis at the hip joint, especially in runners, is iliotibial band syndrome — the iliotibial band is the thick span of tissue that runs from the outer rim of your pelvis to the outside of your knee.
Pregnancy commonly leads to low back pain by mechanically stressing the lumbar spine (changing the normal lumbar curvature) and by the positioning of the baby inside of the abdomen. Additionally, the effects of the female hormone estrogen and the ligament-loosening hormone relaxin may contribute to loosening of the ligaments and structures of the back. Pelvic-tilt exercises and stretches are often recommended for relieving this pain. Women are also recommended to maintain physical conditioning during pregnancy according to their doctors' advice. Natural labor can also cause low back pain.
Running: Running may be good for boosting your cardiovascular health but it can be very strenuous if you have hip pain. The impact can upset your hip joints so instead focus on other forms of exercise. Walking is still a good option for hip pain if you really feel like working out in the great outdoors or you could instead try some strengthening exercises from the comfort of your own home.
The condition is cauda equina syndrome. It involves “acute loss of function of the neurologic elements (nerve roots) of the spinal canal below the termination (conus) of the spinal cord,” where the nerves spread out like a horse (equina) tail. Again, this condition causes symptoms in the “saddle” of the body: butt, groin, inner thighs. BACK TO TEXT
Too much sitting is the enemy of stiff or achy hips, says Lisa Woods, a personal trainer and yoga teacher in Eagle, Colorado. The big problem, though, isn’t just the discomfort in the sides of your thighs. It’s the chain of pain that dysfunctional hips can create, including sciatic nerve pain that can start in your lower back and go down the backs of your legs.
The hip joint is designed to withstand a fair amount of wear and tear, but it’s not indestructible. For example, when you walk, a cushion of cartilage helps prevent friction as the hip bone moves in its socket. With age and use, this cartilage can wear down or become damaged, or the hip bone itself can be fractured during a fall. In fact, more than 300,000 adults over 65 are hospitalized for hip fractures each year, according to the Agency for Healthcare Research and Quality.
Physician specialties that evaluate and treat low back pain range from generalists to subspecialists.These specialties include emergency medicine physicians, general medicine, family medicine, internal medicine, gynecology, spine surgeons (orthopaedics and neurosurgery), rheumatology, pain management, and physiatry. Other health care providers for low back pain include physical therapists, chiropractors, massage therapists, psychologists, and acupuncturists.

Pregnancy commonly leads to low back pain by mechanically stressing the lumbar spine (changing the normal lumbar curvature) and by the positioning of the baby inside of the abdomen. Additionally, the effects of the female hormone estrogen and the ligament-loosening hormone relaxin may contribute to loosening of the ligaments and structures of the back. Pelvic-tilt exercises and stretches are often recommended for relieving this pain. Women are also recommended to maintain physical conditioning during pregnancy according to their doctors' advice. Natural labor can also cause low back pain.


AAOS does not endorse any treatments, procedures, products, or physicians referenced herein. This information is provided as an educational service and is not intended to serve as medical advice. Anyone seeking specific orthopaedic advice or assistance should consult his or her orthopaedic surgeon, or locate one in your area through the AAOS Find an Orthopaedist program on this website.

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Stop listening to other people’s horror stories. You know the scenario: You are bent over in obvious pain, waiting to see the doctor, and the person next to you tells you a 10-minute tale of how their Uncle Gordon had low back pain that required injections and surgery. But the pain still didn’t go away. Stop listening to these terrible stories. Most low back pain is short-lived and can be managed quite effectively with exercise and postural correction. Of course, some low back conditions are serious and require surgery, but that is a conversation you should have with your doctor, not the guy in the waiting room.

It is sometimes hard for an aggressive athlete to consider changing training schedules. It is also hard to accept the fact that a serious disease may exist. All athletes who suffer from low back pain should seek medical advice. Some situations might require reducing or stopping athletic activity until the problem is resolved. The body's ability to be active is worth preserving.


Health care professionals diagnose hip pain with a history and physical examination. Physical examination maneuvers, such as internally and externally rotating the hip, can be used to detect pain-aggravating positions. Tenderness can be elicited by palpating over inflamed areas. Straight leg raising can detect signs of sciatica. A health care professional may use imaging studies, including X-rays, CT scans, and MRI scans, to further define the causes of hip pain. Sometimes, nuclear medicine bone scans are used to image inflamed or fractured bone.
A sedentary lifestyle can lead to having weak and tight hip flexors as they are always in the shortened position. Tight hip flexors can lead to a limited range of motion, poor posture, lower back, and hip pain, and even injuries. These muscles need to get a workout when you are standing and doing movements such as raising your leg to climb stairs, run, or ride a bicycle.​
Some of these red flags are much less red than others, especially depending on the circumstances. For instance, “weight loss” is common and often the sign of successful diet! (Well, at least temporarily successful, anyway. 😃) Obviously, if you know of a harmless reason why you have a red flag symptom, it isn’t really a red flag (duh!). But every single actual red flag — in combination with severe low back pain that’s been going on for several weeks — is definitely a good reason to get yourself checked out.
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