You're sitting on the edge of the bed, lifting a foot to pull on a sock, and your knee just won't come up far enough — so you end up folding your torso down much further than feels comfortable. Maybe you've caught yourself losing balance in that moment and grabbing the mattress for support, or felt a sharp twinge in one side of your back the instant you bent forward and had to freeze mid-motion. None of this is unfamiliar if it's happening to you. A few years ago this was a motion you did without thinking, and if putting on a single sock now feels like a small obstacle course at the start of your day, that's not a sign of low willpower or general stiffness — it's your body telling you that the angle your hip can flex to, and the range your back can rotate through, have actually gotten smaller.
Putting on socks looks simple, but it demands coordination across several joints at once: hip flexion, hip abduction and external rotation, and rotation through the low back and upper back. If any one of those narrows, the other joints end up compensating, and that compensation is what shows up as lost balance or a sudden jolt of strain in the back. This piece walks through how to check for yourself which joint is the actual bottleneck, separate stretches for hip flexion, hip external rotation, and back rotation, practical form adjustments for the moment you're actually putting socks on, and a 4-week program to tie it together. If you want to work on hip mobility more broadly, the hip 90/90 stretch routine is worth reading alongside this one.
Why Putting On Socks Gets So Hard: Hip and Back Working Together
Why Putting On Socks Gets So Hard: Hip and Back Working Together
Break the motion of putting on a sock down into parts, and it turns out to be a more complex, multi-joint task than it looks. Lifting your foot and pulling your knee toward your chest requires at least 110 to 120 degrees of hip flexion. If you use the technique of resting your ankle across the opposite knee, add another 20 to 30 degrees of hip external rotation and abduction on top of that. If instead you stay seated and bend forward to reach your toes directly, you now need 20 to 30 degrees of rotation through the low back and upper back as well. In other words, getting better at this task isn't a matter of loosening the hip alone, or the back alone — the two joints have to work together.
How much this specific motion matters clinically shows up in the tools used to measure joint function. The WOMAC functional index, developed by Bellamy and colleagues (1988, Journal of Rheumatology) and still used as a global standard in hip and knee osteoarthritis research, formally includes an item worded as putting on socks or stockings among the tasks it uses to represent daily function. It sits alongside items like climbing stairs, bathing, and getting in and out of a car — evidence that putting on socks is treated as a sensitive marker of hip function in its own right. The limitation is that this index was developed and validated in patients already diagnosed with osteoarthritis, so it doesn't necessarily represent someone who simply feels stiff without a diagnosed condition.
There's also direct measurement of how much hip flexion this everyday task actually requires. Johnston and Smidt (1970, Clinical Orthopaedics and Related Research) used electrogoniometry to measure hip motion in healthy adults while they put on shoes and socks, and found that a large share of subjects used flexion angles of 110 degrees or more, with some approaching 120 degrees, combined with simultaneous abduction and rotation. This was a small study of young, healthy adults conducted in the 1970s, so applying it directly to someone with hip osteoarthritis or an older adult calls for some caution. Even so, it's still cited often because it puts a number on just how much hip range this specific everyday task requires — and the number isn't small.
Two age-related changes tend to stack on top of this. One is that the hip joint capsule gradually stiffens, narrowing flexion and external rotation range. The other is that spinal discs lose water content and the facet joints stiffen, narrowing rotation through the low back and upper back. As both changes progress independently, at some point the range available falls short of what the task requires, and the body responds by yanking the knee harder or bending the back further to make up the difference somewhere else. That compensation is exactly the moment that throws off your balance or delivers a sudden jolt of strain to the low back — and it's usually the moment people describe as socks suddenly becoming hard.
One distinction is worth making here. Feeling stiff after a few days of sitting around more than usual is a different problem from a flexion angle that has been narrowing gradually for months. The first kind loosens up within a day or two of light movement; the second shows up repeatedly every morning and doesn't improve much without deliberate stretching. If you notice a pattern of being unusually stiff for the first 30 minutes to an hour after waking and then loosening gradually with movement, that points more toward stiffness built into the joint capsule and disc tissue themselves — which makes the self-check in the next section the right place to start, so you can pin down exactly which joint is actually limited.
Finding Where You're Actually Stuck: A 3-Part Self-Check
Finding Where You're Actually Stuck: A 3-Part Self-Check
Whether hip flexion, hip rotation, or back rotation is the real bottleneck changes which stretch deserves priority. Try the three checks below in order and you'll get a reasonable sense of where things are limited. If anything hurts, stop at that point rather than pushing through.
Check 1, ankle-over-knee while seated Sit in a chair and rest one ankle across the opposite knee. If the ankle settles comfortably and the knee opens out close to horizontal with the floor, hip flexion and external rotation are both reasonably fine. If your knee can't come up to chest height, or the inside of your thigh pulls so hard you can't even get the ankle up there, prioritize the hip flexion and external rotation stretches covered later.
Check 2, standing knee pull Hold onto a wall or chair back, stand on one leg, and use both hands to pull the opposite knee toward your chest. If the knee comes up above navel height without a major wobble, both your balance and hip flexion are in decent shape. If the knee barely clears hip height, or you wobble the instant you lift it and can't let go of your support, that points to a combination of limited hip flexion and reduced balance.
Check 3, seated trunk rotation Sit in a chair, cross your arms in front of your chest, keep your pelvis facing forward, and rotate just your upper body side to side. If you can comfortably bring the chair back or a wall behind you into view, rotation through your low back and upper back is holding up well. If your shoulders barely turn, or one side of your low back feels achy partway through, put more emphasis on the back rotation stretch.
If all three checks came back limited, don't force yourself through a strict order — spread the next three sections across the day in smaller doses, and put more frequency toward whichever area felt stiffest. That's the more realistic way to approach it.
Step One: Opening Up Hip Flexion
Step One: Opening Up Hip Flexion
The first thing that usually gets in the way of putting on socks is the basic flexion motion of pulling a knee toward your chest. Doing this lying down rather than standing lets you focus purely on flexion range without any balance demand, which makes it a safer place to start.
Lie on your back on the floor or a bed, knees bent, feet flat on the floor. Wrap both hands around one knee and pull it slowly toward your chest, while keeping the other leg bent with its foot planted so it doesn't lift off the floor. Pull until you feel a stretch through the back of the thigh and the top of the glute, hold for 15 to 20 seconds, exhaling comfortably as you pull and bracing your lower abdomen slightly so your low back doesn't lift off the floor. Three reps per side, alternating, once or twice a day is enough.
Two mistakes show up constantly here: straightening the resting leg out flat, or curling the low back upward to force the pulled knee closer to the chest. Straightening the other leg tilts the pelvis backward, which stretches the low back instead of the hip. Curling the low back up can feel like extra flexion range, but it's really the spine moving instead of the hip, so you don't get the effect you're after. Keeping the resting knee bent with its foot on the floor, and keeping your low back flat against the surface, fixes most of this on its own.
Stop and reduce the range if you feel a sharp, stabbing pain deep in the groin or hip joint itself, or new numbness down the leg. If the same thing happens on repeat attempts, stop for the day and check the contraindications section further down.
Step Two: Building Abduction and External Rotation for the Ankle-Over-Knee Position
Step Two: Building Abduction and External Rotation for the Ankle-Over-Knee Position
Abduction and external rotation get overlooked almost as often as flexion. If you use the technique of resting your ankle on the opposite knee to put socks on, this range may actually matter more to you than flexion does.
Lie on your back with both knees bent, then cross one ankle over the opposite knee to form a figure-4 shape. Gently press the crossed knee outward with your hand to open it further, while keeping the other foot flat on the floor. Hold at the point where you feel a stretch along the outside of the hip for 20 to 30 seconds, for 2 to 3 sets. Exhale as you press, then breathe comfortably through the hold. You can make the same shape seated instead — sit in a chair, cross the ankle over the knee, and lean your torso forward slightly to increase the intensity.
A common error here is pressing the crossed knee down hard enough to push into actual pain — if you feel the sensation catching deep in the groin joint itself, stop pressing further rather than pushing through it. The opposite mistake is letting the resting leg lift off the floor or letting the whole pelvis rotate along with the movement, which shifts the motion into the pelvis instead of the joint you're trying to stretch. Check every set that the resting foot stays flat on the floor.
If you've had a hip replacement, this entire exercise may not apply to you. Depending on the surgical approach, crossing a leg over the opposite knee can be specifically restricted, so skip this section and check the contraindications listed later in this piece first. If you feel a new sharp pain or a clicking sensation deep inside the hip joint rather than around the knee, release the position immediately and don't push through it.
Step Three: Getting Back Your Trunk Rotation
Step Three: Getting Back Your Trunk Rotation
Even with full hip flexion and abduction, limited rotation through the low back and upper back — the range that lets your gaze and torso turn slightly toward your foot — still forces an awkward twist through the rest of the body. You can build this range back with two variations below.
Start with the lying version. Lie on your back with knees bent, arms out to the sides with palms flat on the floor. Slowly lower both knees together to one side, keeping your shoulders as flat against the floor as you can manage. Hold at the point where you feel a stretch along the side of your low back for 10 to 15 seconds, then switch sides. Do three slow reps each direction, exhaling as you lower the knees and inhaling as you return to center.
The second version is seated, and it more closely resembles the actual position you're in when putting on socks. Sit toward the front of a chair, cross your arms in front of your chest, keep your pelvis facing forward, and rotate just your upper body to one side. Hold for 5 seconds at your furthest comfortable point, return to center, then repeat the other direction, 8 reps per side. This is the same motion as check 3 from the self-check section — the difference here is that you're doing it daily as a deliberate stretch.
In the lying version, the common mistake is forcing the knees so far over that the shoulders lift off the floor. In the seated version, it's letting the pelvis rotate along with the torso, which means very little actual back rotation happens even though it feels like a lot of motion. The key in both is keeping the shoulders down and letting only the knees travel in the lying version, and keeping the pelvis locked forward while only the torso turns in the seated version. If you feel a sharp twinge on one side of the low back or numbness shooting down a leg during the rotation, return to center immediately, and cut your range in half on the next attempt. If the symptom keeps recurring, pause this exercise and review the contraindications section.
The Technique That Matters as Much as the Stretching
The Technique That Matters as Much as the Stretching
While the three stretches gradually open up your range, adjusting how you actually put socks on each morning cuts the strain down considerably in the meantime.
Start seated at the edge of a bed or chair Starting from a stable seated surface rather than bending over while standing removes most of the balance demand. Sit toward the front edge of the chair or bed so your feet reach the floor comfortably.
Hold the ankle, not the knee, when lifting the leg into position If you push up on the knee to lift the leg, you end up twisting the knee joint instead of moving through the hip. Supporting the ankle or lower shin with your hand instead lets the hip do the work without loading the knee.
Lean the torso only slightly, and bring the leg toward you instead Rather than bending deeply to reach your toes, pull the leg further toward your body and lean the torso only a little to match, which balances the load instead of dumping it all on the low back. Think of it as splitting the work between how far you bend and how far you bring the leg in, rather than relying on the bend alone.
If you have to do it standing, lean on a wall or furniture When there's nowhere comfortable to sit, lean your back or shoulder against a wall, or steady yourself with one hand on furniture, and balance on the standing leg alone. Doing this on one leg with nothing to hold onto is only safe if your balance is already solid.
Using a tool is a legitimate answer too A long-handled sock aid or a shoehorn isn't a sign of giving up — it's a reasonable way to cut a daily, repeated load. This is especially worth leaning on during early recovery from hip replacement surgery or during a flare of back pain, while saving the 4-week program below for once the pain has settled.
Put the stiffer side on first, while you still have some fuel left If one hip is noticeably stiffer than the other, put that side's sock on first, before fatigue sets in. Doing the easier side first and saving the stiff one for last means you tackle the harder task with less focus and balance left in reserve. It's a small ordering habit, but doing it daily is exactly why it tends to show a noticeable difference after a few weeks.
A 4-Week Hip and Back Mobility Program
A 4-Week Hip and Back Mobility Program
Rather than cramming all three stretches into one session right away, spreading the emphasis across four weeks gives your body time to adapt to the new range. If the self-check flagged one area as especially limited, feel free to weight that week more heavily.
| Week | Focus | Practice frequency | Success check |
|---|---|---|---|
| Week 1 | Start with the hip flexion stretch (lying knee pull); recheck all three self-checks | 1-2x daily, 3 sets per side | Low back stays flat, doesn't curl, while pulling the knee toward the chest |
| Week 2 | Add the figure-4 abduction/external rotation stretch alongside flexion work | Once daily, 2-3 sets per side | Resting an ankle on the opposite knee feels noticeably easier than before |
| Week 3 | Add the trunk rotation stretch; start applying the practical technique for actual sock-putting | Once daily rotation stretch + technique applied every morning | Seated trunk rotation comfortably brings the chair back into view |
| Week 4 | Chain all three stretches into one routine; recheck balance during actual sock-putting | Once daily full routine (about 8-10 minutes) | Standing knee-pull check reaches above navel height without wobbling |
Even one to two weeks of practice makes a noticeable difference if you can't complete all four. If one joint is still noticeably stiffer than the others after four weeks, move on to a more focused routine like the hip 90/90 stretch or the thoracic mobility program to work on it specifically.
When to Skip This: Contraindications and Warning Signs
When to Skip This: Contraindications and Warning Signs
The stretches in this piece are meant for everyday stiffness that's made putting on socks harder — they don't treat a diagnosed joint condition or nerve injury. If any of the following apply to you, talk to your physician before trying this on your own.
- Recent hip replacement surgery with restrictions from your surgeon against crossing a leg over the opposite knee or flexing the hip past 90 degrees
- A diagnosed acute disc herniation, or existing radiating pain down a leg
- Recent spine surgery with restrictions on flexion or rotation from your surgeon
- An osteoporosis diagnosis requiring caution with movements that combine spinal flexion and rotation
- A history of dizziness or orthostatic hypotension causing your vision to dim when moving from lying to standing
- New, unexplained hip or groin pain that started recently and hasn't been evaluated yet
Stop immediately during the stretches or self-checks if any of the following show up: new or worsening pain or numbness radiating down a leg, any change in bladder or bowel control, or a sharp pain paired with clicking deep inside the hip joint that keeps recurring. If any of these persist for more than a day, see an orthopedist.
Near-infrared LED is a wellness tool that eases muscle tension before and after stretching — it is not a medical device that treats structural problems in the hip or spine themselves. Never aim it at the eyes, and check with your physician first if you're taking photosensitizing medication. As a rule, avoid direct application over unhealed surgical sites or areas with reduced sensation. For a broad area like the hip or low back, many users keep the device 5 to 30 centimeters from the skin for about 10 minutes per session, 3 to 5 times a week, though the right duration varies by individual.
Above all, if pain gets worse during the stretches or doesn't improve after several days, stop pushing through this routine and get the cause checked instead. Whether it's a structural hip issue, a disc problem, or simply stiffness that's been left unaddressed for a long time changes what comes next.
