But there are some pretty serious causes for back and hip pain as well. Lower back pain, in particular, can be a sign of various serious conditions such as advanced kidney infections or a condition called interstitial cystitis, which can cause inflammation of the tissues of the bladder. Sciatica causes lower back pain, pain in the back of the knee, pain in right buttock cheek, unilateral (one-sided) pain, thigh pain, pain behind the knee and calf, and muscle weakness in legs as well.
Tight hamstrings are a common cause of lower back pain, and if you have a desk job, you’re at risk for both. Perform the seated forward fold paschimottanasana several times a day to stretch your shoulders, hamstrings, and spine. Sit on your mat with your legs straight, your feet together and flexed, your torso erect (but not arched), and your chin lifted like you’re proud to be performing this pose (which you should be!). Take a deep breath in, straightening up as much as you can, and then fold forward, walking your hands down the sides of your legs as you lower your torso as far as you can. Hold the pose for 8-10 breaths, and then slowly reverse the movement to raise your torso back up.
Luckily, you don’t have to quit your day job or forgo spin class to loosen them up. Simply stretching those hips can get your body back in alignment, increase your mobility (and thus your exercise performance) and maybe even ease pesky back pain, Moore says. “Given the amount of time we sit [each] day and the stress we put our bodies under, hip-opening moves are a necessary party of our daily routine.”
How to: Sit down with your knees bent and feet flat on the floor in front of you (a). Place your right ankle on top of your left thigh and flex your right foot (b). Put your hands behind your body, fingertips facing away from your body and begin to press your hips toward your heels until you feel a stretch through your outer left hip. Keep your back tall and chest open (c). Hold for six to eight breaths, then repeat on the other side.
Outer hip pain and lateral hip pain, though typically not cause for alarm (as the hip is not sitting near any major organs like the heart, lungs, kidneys, or liver), can be a sign of a serious bone condition, such as arthritis in the back, rheumatoid arthritis, osteoarthritis, or tendonitis but can also indicate a more serious bone condition like a fracture, labral tear, or conditions such as snapping hip syndrome or osteonecrosis.
Lie on your back with your knees bent and your feet flat on the floor. Tighten your buttocks and lift your hips off the floor. Tighten your abdominal muscles and lift one foot a couple of inches off the floor. Then put it down and lift the other foot a couple of inches, all while remembering to breathe. “It’s like taking alternate steps,” Pariser says. Work up to doing 30 steps at a time.
Holland also suggests doing strength work in different planes of motion to keep all the muscles in and around your hip flexors, especially your glutes, firing correctly.“You can’t have good hip flexion if your glutes are tight or weak,” Nurse says, “so it’s super important that you’re always stretching and strengthening the front of your hip flexor and the back, which are the glute muscles.”
You're more likely to get a hip flexor injury if you've had one in the past, you don't warm up properly before engaging in athletic activity, your muscles are already tight or stiff, or your muscles are weak from being overused. If, while exercising, you try to do too much at once in too short an amount of time, you can also put yourself at risk for a hip flexor injury.