Back and neck pain from the feet up (the kinetic chain)

Every step sends force up one connected column: foot, shin, knee, thigh, pelvis, spine, shoulders and neck. In 35 healthy adults, wedges that rolled the feet in by 10° to 20° turned the shins and hips inward and tipped the pelvis forward (Khamis 2007). The shin is the hinge that passes the roll to the thigh, and the thigh to the pelvis (Khamis 2015).

Tissue ties the links as well as bone. A fascial line runs from the sole through the calf and hamstrings to the spinal muscles, and tension can travel along it (Wilke 2016; Krause 2016). Its weakest joint is the first: the sole-to-calf link appeared in only 25 of 72 bodies studied, and fades with age (Wilke 2016).

Typical signs: arches that flatten and knees that turn in on standing, poor one-leg balance, and back or neck pain that builds with long standing or walking (Khamis 2007; Springer 2007).

In 1,930 adults in the Framingham Foot Study, women whose feet rolled in as they walked had about 50% higher odds of low back pain; men showed no link (Menz 2013, via Consultant360). The wedge study's authors advise checking foot alignment whenever the pelvis or lower back is the problem (Khamis 2007).

Fixing the base helps some backs. In 225 adults with chronic low back pain, custom shoe orthotics improved pain and function over 6 weeks against no care (Cambron 2017, via NUHS). The orthotics came from a manufacturer linked to the study: one promising trial, not proof.

The neck sits at the far end of the chain, so its link to the feet is the least studied. Working the lower back line, such as calf and hamstring stretches, increased neck movement by about 5° (9%) across 8 small trials of 354 people: a small and uncertain gain (Burk 2020). The chain also loosens above the pelvis: in 51 adults, changing foot position shifted the pelvis but not the spinal curves (Betsch 2011).

So check the feet when the neck hurts, and give the neck its own care too: normal use, breaks from long sitting, and no long bed rest or soft collars (UH Sussex NHS).

Strong feet are worth having, but they aren't a cure-all.

The fair reading: the feet are the first link, so check them, train them and support them when needed, alongside the rest of the back and neck care.

Retest after 6 weeks of training: arch exercises changed foot shape only in programmes longer than that (Cheng 2024). The patient view carries the same tests in plain words.

Train the feet like any other muscle group: a few minutes a day, for more than 6 weeks. In 118 recreational runners, an 8-week foot-strengthening course cut the rate of running injuries 2.42-fold over a year (Taddei 2020).

• Short foot (demo video, opens in a new tab): draw the ball of the foot toward the heel without curling the toes.
• Toe control (demo video, opens in a new tab): the big-toe lift, toe spreading, and picking up small objects.
• Heel raises and toe rocks (demo video, opens in a new tab), holding a support.
• One-leg stand (demo video, opens in a new tab), fingertips on a wall, building up from 5–10 seconds.

Pair them with regular walking, which the NHS also lists among the activities that may ease back pain (NHS).

Pain travels along the chain, so the plan works along it too, in three steps: relieve the pain so the patient keeps moving, restore a level chain through the hours of sitting and sleep, then reinforce the base. The three tests show where the base stands.

Prices as listed on myfrido.com on 16 Oct 2026; check the product page for today's price.

Calm a flare enough to keep moving, because staying active is the core advice for back pain (NHS).

Use the belt for demanding tasks during a flare, not all-day wear.

Keep the chain level through the long, still hours of sitting and sleep.

• Sitting. A backrest that supports the lower back's curve, as an NHS neck-pain leaflet advises for long sitting (UH Sussex NHS): the Cloud Seating Combo. For desk work, a highly adjustable chair plus ergonomics training slowed the build-up of aches over the day in a 12-month office trial; training alone didn't (Amick 2003).
• Sleeping. In 313 people with chronic back pain, a medium-firm mattress beat a firm one for pain in bed and disability at 90 days (Kovacs 2003). The Mattress Topper adds a memory-foam layer to a very hard bed.
• The neck at night. A low, firm pillow that keeps the head level with the body (NHS); the Cervical Pillow has two heights to pick from.

No support replaces movement: stand up and move as often as possible (UH Sussex NHS).

The root-cause step: build the base so the chain starts straight.

• Train the arch. In 46 people with low back pain and feet that roll in, short-foot exercises improved back pain, disability and foot posture; the group without them didn't change (Mahmoud 2022).
• Walk it stronger. In 57 runners, 8 weeks in minimalist shoes built foot muscle size and strength as well as foot exercises did (Ridge 2019). Frido's Barefoot Shoes have the zero-drop sole and roomy toe box of a minimalist shoe; build up over weeks, as the study's lead author advises (IDEA Health & Fitness).
• Add balance. The Portable Balance Trainer's two cork half-domes make a harder one-leg stand.
• Support the arch while it strengthens. In 40 people with painful flat feet, short-foot exercises plus insoles beat insoles alone for pain and function at 6 weeks (Elsayed 2023). Insoles alone haven't been shown to prevent back pain (Chuter 2014), and NICE says not to offer them for managing it (NICE 2016), so pair them with the training.

Can say: supports the feet, the seat and the sleep that load the chain; makes staying active easier; pairs with exercise. Can't say: cures back or neck pain; insoles prevent back pain; "clinically proven". We found no study of Frido's own products.

Assess: the three tests of the base (one-leg stand against age norms, mirror check, big-toe lift), alongside the usual back and neck examination (Springer 2007; Khamis 2007).

In the Frido Care app, add a product to the plan only when your findings call for one; you accept, edit or drop every suggestion. Frido ships it to the patient directly.

Explain it in plain words

"Your body works like one chain, and your feet are the first link. When they roll in, your knees and hips turn with them. Stronger feet won't fix everything, but they give the rest of your back and neck care a straighter start."

Their daily routine

A few minutes of foot exercises a day for more than 6 weeks, a walk, breaks from long sitting, and heat during a flare. No long bed rest; the belt only for heavy tasks; insoles with the exercises, not instead of them (NHS; NICE 2016).

Send the patient view

The patient view has the explainer, the three home tests, the four exercises, the three-step plan and the safety-net in plain words, and leaves out everything clinical. Send it with Send to patient at the top of this page.

Retest the one-leg stand after 6 weeks; foot shape changed only in programmes longer than that (Cheng 2024).