You can check your spine alignment at home using a few simple tests that reveal how your head, shoulders, spine, and pelvis line up. These self-checks won’t replace imaging, but they’re reliable enough to flag problems worth investigating. The most widely recommended starting point is the wall test, which takes about 30 seconds.
The Wall Test
Stand with the back of your head, shoulder blades, and buttocks all touching a wall. Your heels should be 2 to 4 inches away from the wall. Then slide a flat hand behind the small of your back, between your lower back and the wall.
If your spine is properly aligned, your hand should just barely fit in that space. If there’s a large gap, your lower back curves too far inward, a posture sometimes called swayback. Draw your belly button toward your spine to feel where neutral should be. If there’s too little space for your hand, your lower back is too flat, and you’ll need to arch slightly until your hand slides through.
Once you’ve found the correct position, walk away from the wall and move around for a few seconds. Then return and check again. Most people lose the alignment almost immediately, which tells you how much your default posture deviates from neutral.
Mirror Check for Symmetry
Stand in front of a full-length mirror in fitted clothing or a swimsuit. You’re looking for asymmetry in three zones: shoulders, hips, and the overall vertical line of your body.
- Shoulders: Check whether both shoulders sit at the same height. One shoulder riding higher than the other can indicate a lateral spinal curve or muscle imbalance on one side of the upper back.
- Hips: Place your hands on your hip bones (the bony points at the front of your pelvis). If one hand sits noticeably higher, you may have a lateral pelvic tilt, which can stem from a leg length difference, tight muscles on one side, or a spinal curve compensating below.
- Side view: Turn sideways. Your ear, shoulder, hip, and ankle should roughly stack in a vertical line. If your ear sits well in front of your shoulder, that’s forward head posture. If your hips push forward past your ankles, your pelvis is tilting out of neutral.
Ask someone to take a photo from behind as well. Look at whether one side of the ribcage appears more prominent or whether the spine visibly curves to one side. These are easier to spot in a photo than in a mirror.
Checking for Forward Head Posture
Forward head posture, sometimes called “tech neck,” is one of the most common alignment issues. Clinicians measure it using the craniovertebral angle: the angle formed between a horizontal line through the base of your neck (the C7 vertebra, the bony bump where your neck meets your shoulders) and a line drawn up to the opening of your ear.
An angle of 55 degrees or more is considered healthy. Below 50 degrees is classified as forward head posture. You can approximate this at home by having someone photograph you from the side while you stand naturally. Place a small sticker or piece of tape on the bump at the base of your neck and another on the small flap in front of your ear canal. Draw the lines on the photo using any basic editing tool and estimate the angle. It won’t be clinical-grade, but a clearly acute angle tells you your head is sitting too far forward.
The Forward Bend Test for Scoliosis
The Adams forward bend test is the standard scoliosis screening used in schools and clinics. You can do it at home with a partner. Stand with your feet together, knees straight, and bend forward at the waist while letting your arms dangle toward the floor.
Your partner should look at your back from behind, checking for any unevenness. A rib hump, where one side of the ribcage appears higher than the other, is the hallmark sign of scoliosis. They should also check whether the muscles along the spine look symmetrical or whether one side of the lower back appears raised. Any visible imbalance warrants professional follow-up, especially in adolescents who are still growing.
Pelvic Tilt and Leg Length
Your pelvis is the foundation of your spine, so a tilted pelvis pulls the entire spine out of alignment. There are two types to check for: lateral tilt (one hip higher than the other) and anterior/posterior tilt (pelvis tipping forward or backward).
For lateral tilt, stand in front of a mirror and rest your hands on top of your hip bones. If they’re uneven, one possible cause is a leg length difference. You can test this roughly by lying flat on your back and having someone compare the position of your inner ankle bones. A difference of even a few millimeters can cause the pelvis to compensate, creating a visible curve in the spine above it. A fixed pelvic tilt or hip contracture can also make one leg appear shorter than it actually is.
For anterior tilt, stand sideways in a mirror. If your belt line angles downward toward the front and your lower back has a pronounced inward curve, your pelvis is tipping forward. This is extremely common in people who sit for long hours, as the hip flexor muscles shorten and pull the pelvis into that position.
What Normal Spine Curvature Looks Like
A healthy spine is not straight. Viewed from the side, it has three natural curves: the neck curves slightly inward (lordosis), the upper back curves gently outward (kyphosis), and the lower back curves inward again. These curves work together as shock absorbers and keep your center of gravity balanced.
The accepted ranges measured on X-ray are 20 to 40 degrees of inward curve in the neck, 20 to 50 degrees of outward curve in the upper back, and roughly 60 degrees of inward curve in the lower back. You can’t measure these precisely at home, but you can get a sense of whether your curves are exaggerated. A very rounded upper back, a deeply arched lower back, or a neck that juts forward all fall outside these healthy ranges.
Signs That Suggest a Real Problem
Poor posture and mild asymmetry are common and often correctable with strengthening and stretching. But certain symptoms point to something more serious, like nerve compression or significant structural misalignment. These include burning pain that radiates into the arms or legs, numbness or weakness in the hands or feet, cramping in the legs with walking, trouble coordinating your hands or legs, and foot drop, where weakness in the foot causes a noticeable limp.
Pain and stiffness in the neck or back that persist for months rather than weeks also deserve investigation. In adolescents, the Scoliosis Research Society recommends that parents look for one shoulder sitting higher than the other or one side of the ribcage protruding. About 4 in 100 adolescents have scoliosis, though more than half report back pain at some point, most of which resolves on its own.
How Professionals Measure Alignment
If a self-check raises concerns, a clinician will typically start with a physical exam and may order imaging. Standing X-rays of the full spine are the standard tool. They allow measurement of the Cobb angle, which quantifies the degree of any lateral curve, and they reveal whether the natural front-to-back curves fall within normal ranges.
A newer option is biplanar X-ray imaging (often called EOS imaging), which captures the entire spine in two planes simultaneously with significantly less radiation than conventional X-rays. It was introduced in 2007 and provides a three-dimensional picture of how the spine, pelvis, and legs relate to each other. Clinicians use vertical reference lines and specific angles between landmarks like the skull, hips, and sacrum to assess overall balance. This full-body view helps identify whether a spinal curve is the primary problem or a compensation for something happening lower in the chain, like a pelvic tilt or leg length discrepancy.