Anatomy 101: Understand Your Quadratus Lumborums (QLs)

Anatomy 101: Understand Your Quadratus Lumborums (QLs)

Relieve hard-to-release back tension by unlocking your QL muscles.

Relieve hard-to-release back tension by unlocking your QL muscles.

Ever noticed a lingering ache deep in your low back after prolonged sitting or standing? When your back muscles are weak or you have poor posture, intrinsic rectangular muscles between your ribs and hips called the quadratus lumborums, or QLs, work overtime to stabilize your spine and pelvis, leaving them tight and sore. These deep muscles are also near critical organs like the kidneys and colon, which means that in addition to contributing to an achy back they can adversely affect your digestive health, and therefore energy and well-being, according to some alternative health practitioners.

Fortunately, yoga is one of the best methods for engaging these little-known muscles and keeping them agile and pain free. Releasing tension from your QLs will lengthen the sides of your lower back (i.e., your flanks), a process that can be exquisitely liberating, creating powerful feelings of relaxation within the abdomen, low back, and hips. To experience this, you first need to know exactly where your QL muscles are.

Your QLs originate on the internal side of the iliac crests (hip bones) and insert into the twelfth rib and the transverse processes—the boney, winglike protrusions on either side of the vertebrae—of the first through fourth lumbar vertebrae, L1–4. They sidebend your spine, help raise or “hike up” your hips one at a time, and extend your lumbar spine in poses like Uttanasana (Standing Forward Bend). Find your right QL by placing your right thumb on your back about halfway between your right side waist and your spine, and pressing into the space between your bottom rib and your hip. Then press in toward your transverse processes and hike up your right hip: You should feel your QL contract.

Your QLs get tight and tender when they have to kick in and compensate for poor posture. And often soreness is one-sided, due, say, to carrying a small child on one side or side-sleeping with your top hip hiked up every night. Leg-length discrepancies are also a common cause of QL tension—most people have a slight variance in leg length, and around 2o percent of people have a clinically significant (greater than 2 cm) difference.

Yoga offers a host of poses to stretch your sides—and your QLs. Standing poseslike Utthita Trikonasana (Extended Triangle Pose) and Utthita Parsvakonasana (Extended Side Angle Pose), and seated poses like Parsva Upavistha Konasana (Side Seated Wide Angle Pose) and Parivrtta Janu Sirsasana (Revolved Head-of-the-Knee Pose), can help you access a QL stretch. As you warm up for the restorative sequence, designed to create ease around your lumbar spine, first work on releasing any tightness in your hips and thighs. This will free up your pelvis and allow for a deeper stretch in your QLs.

4 Poses to Free Your Flanks

Combine these exercises to bring more mobility to your lumbar spine and sides and to find greater range of motion in sidebending poses.



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