Longevity Physiotherapy — David Quenzer, DPT

Successful With

Click any condition to see exactly how this applies to you.

Common condition

Plantar Fasciitis

Usually a pressure distribution problem, not a foot problem.

When the hips and pelvis lose their coordination, the foot absorbs force it was never meant to handle alone

Stretching the arch and icing the heel address the symptom. Restoring what stopped working upstream resolves it

What I often find

Restricted hip mobility and a pressure system that can’t coordinate load through the lower body. Fix that, and the foot stops taking the hit.

Reframing plantar fasciitis

The plantar fascia is the last structure in a force chain that begins at your trunk with every step you take. Ground reaction force travels up through the foot, through the ankle, into the knee, through the hip, and into the spine. At every joint along that chain, force is meant to be absorbed and redirected.

When the pressure system loses its coordination role, it stops absorbing its share of each step. That unabsorbed force has to go somewhere. The joints below the trunk take it — and the foot is at the bottom of that chain, receiving everything that wasn’t absorbed above it.

This is why patients with plantar fasciitis often report that the foot treatment helps for a while and then the pain returns. The foot was never the source. It was the final stop.

Common condition

Chronic Low Back Pain

Often the last place to feel what started upstream — not the source.

Your low back was designed to be stable, not mobile. It gets overworked when the hips and rib cage above and below it stop moving freely

The small muscles alongside your spine turn off when the pressure system coordination breaks down. That’s what makes it feel unstable

What I often find

Stiff hips, a rib cage that doesn’t rotate, and a breathing pattern that has lost its postural role. Restore all three and the back stops grinding through other people’s work.

Reframing chronic low back pain

The lumbar spine has almost no rotation built into it. Its job is stability — transferring load between the pelvis and the rib cage without moving excessively. It depends on the structures above and below it to share that load.

When the hips lose mobility and the thoracic spine loses rotation, the low back is forced to become the most mobile structure in the chain. It was never built for that role. The repeated overload irritates the facet joints, compresses the discs, and triggers the protective muscle guarding that creates the familiar cycle of stiffness, pain, and cautious movement.

The deep spinal muscles — the ones that provide segmental stability — are directly dependent on intra-abdominal pressure for their activation signal. When the pressure system loses coordination, these muscles go quiet first. That’s the instability people feel. Restoring the pressure system restores the signal, and the deep stabilizers come back online.

Common condition

Sciatica

The nerve is being irritated by how your spine is loading, not by the nerve itself.

Sciatic pain is a signal that something is compressing or pulling the nerve — and that something is usually a movement and load problem

When the pressure system loses coordination, your spine takes uneven load with every step. The nerve tells you about it loudly

What I often find

A pelvis that can’t distribute load evenly and a deep trunk that stopped anticipating movement. Restore that and the nerve quiets down.

Reframing sciatica

The sciatic nerve exits the spine through narrow openings between the lumbar vertebrae and then travels through the deep hip musculature on its way down the leg. It is surrounded by tissue that responds to the mechanical environment of the spine and pelvis.

When the pressure system loses its tonic stabilizing role, the spine loads asymmetrically. One side of the pelvis drops, one set of foramina narrows slightly, and the tissue through which the nerve travels is under chronic low-grade tension. The nerve doesn’t have a pain problem — it has a mechanical environment problem.

This is why sciatica that improves with treatment frequently returns. The nerve was decompressed temporarily, but the load pattern that was compressing it was never addressed. Restoring the pressure system changes the mechanical conditions the nerve lives in — and that change tends to hold.

Common condition

Shoulder Pain

Frequently a compensation for something the spine or trunk stopped doing.

Your shoulder blade needs your rib cage to move freely underneath it. When the mid-back loses rotation, the shoulder absorbs everything

Rotator cuff weakness is often a symptom of this. Isolating the cuff without restoring the platform it sits on produces temporary relief

What I often find

A rib cage that can’t rotate and a shoulder blade that has lost the support it needs. Free the platform, and the shoulder recovers naturally.

Reframing shoulder pain

The shoulder blade rides on the rib cage. For the glenohumeral joint to move through its full range with appropriate mechanics, the scapula needs to rotate upward as the arm elevates — and that rotation requires a rib cage that can move under it.

When the thoracic spine loses rotation and the rib cage becomes stiff, the scapula loses its mobile platform. It compensates by winging, tilting, or elevating. The muscles that connect the shoulder blade to the spine and rib cage go on constant guard duty. The rotator cuff has to work harder to maintain the glenohumeral joint in acceptable alignment. That constant overload is what creates the impingement, the fraying, and the chronic ache.

Isolating rotator cuff strengthening in this context is like reinforcing the walls of a house built on a shifting foundation. The work done at the shoulder level doesn’t hold because the platform below hasn’t changed.

Common condition

Neck Pain & Headaches

Rarely a neck problem. More often a support problem from below.

Your neck was designed to move your head, not hold it up all day. When the trunk and rib cage stop supporting your posture automatically, the neck fills in — thousands of times daily

No amount of conscious effort to sit up straighter resolves this. The solution has to be automatic

What I often find

A pressure system that lost its postural role and a rib cage that has stopped participating. Restore the support from below and the neck stops overworking.

Reframing neck pain and headaches

The cervical spine is a mobile structure sitting on top of a thoracic spine and rib cage that are meant to be its stable base. The muscles of the neck are built for movement — rotating, tilting, and extending the head. They are not built to provide continuous postural support for hours at a time.

When the pressure system loses its automatic postural role, the whole trunk drifts into a slightly flexed, collapsed position. The head moves forward of the body’s center of gravity. For every inch of forward head position, the effective weight on the cervical spine roughly doubles. The neck muscles contract continuously to prevent the head from falling further forward.

The tension headaches, the base-of-skull aching, and the chronic upper trap tightness are all the same problem: a structure doing continuous isometric work it was never designed for. Restoring the trunk’s automatic postural role returns the neck to its intended job description.

Common condition

Hip & Knee Pain

Usually a coordination failure, not a structural failure.

When the pelvis loses its ability to coordinate load, the hip and knee absorb more impact than they were designed to handle

Strengthening the glutes in isolation without restoring how the whole system loads rarely produces lasting results

What I often find

A pelvis that tilts rather than transmits and a pressure system that can’t stabilize the spine during movement. Restore that, and the hip and knee stop taking the extra load.

Reframing hip and knee pain

The knee is a hinge joint. It is built to flex and extend. It was not built to absorb rotational forces or to stabilize itself against medial or lateral collapse. When it receives those forces anyway — which it does when the pelvis and trunk above it can’t manage load properly — the cartilage, ligaments, and surrounding muscle all pay a price.

The hip is a transfer point between the ground and the trunk. Its job is to absorb ground reaction force, redirect it into the pelvis, and let the trunk above manage the rest. When the trunk loses its stabilizing capacity, the hip has to absorb what the trunk was supposed to take. That chronic overload is what creates the bursitis, the labral fraying, and the groin tightness that never quite resolves.

Glute strengthening exercises done in isolation improve the strength of one muscle without changing the loading pattern the joint lives inside. The joint continues to receive the same force it received before. The muscle is stronger, but the problem hasn’t changed.

Common condition

Balance & Fall Prevention

A system that has shifted from predicting to reacting.

Balance is the output of your whole system working together. When the core pressure signal is absent, the brain can’t build an accurate predictive model of where the body is and where it’s going

The brain’s response is to narrow the range of positions it’s willing to let you occupy. That narrowing is what people experience as losing confidence in their balance

What I often find

A pressure system that has gone quiet and a brain that has shifted from anticipatory movement to reactive movement. Restore the signal, and the predictive capacity returns naturally.

Reframing balance and fall risk

Balance is not primarily a leg-strength or coordination exercise problem. It is the output of the brain’s ability to build and continuously update an accurate model of where the body is in space and where it is about to go. That model depends on sensory input from the feet, the joints, the vestibular system, and — critically — the deep trunk mechanoreceptors that signal intra-abdominal pressure to the brainstem.

When the pressure system loses its tonic baseline signal, the brainstem receives degraded information about trunk position and stability. The brain compensates by narrowing the range of positions it considers safe. Activities that were automatic — reaching overhead, stepping off a curb, turning quickly — begin to require conscious attention and slow deliberate movement.

Patients often experience this as a loss of confidence rather than a loss of strength. The capacity is still there. The automatic predictive signal has diminished. Restoring the pressure system restores the signal, and the brain’s predictive model rebuilds. The range of movement that feels safe expands again, without formal balance training.

Men’s Health

Men’s Pelvic Floor

Pressure dysregulation expressed through the pelvic outlet.

Urinary urgency, frequency, or difficulty after prostate procedures often traces to how intra-abdominal pressure is being managed, not just to the local tissue

Pelvic pain, groin tension, and hip restriction in men are frequently downstream expressions of a pressure system that has lost coordination above the pelvis

What I often find

A breathing and bracing pattern that drives pressure downward rather than distributing it evenly. When the canister is restored, the pelvic floor stops working overtime and symptoms resolve from the top down.

Why men’s pelvic symptoms are a pressure problem

The pelvic floor in men functions as the base of the pressure canister. Its job is to respond to intra-abdominal pressure changes during breathing, movement, and exertion — not to hold tension continuously. When the diaphragm and deep abdominal wall stop coordinating properly, the pelvic floor compensates by staying in a guarded, over-contracted state.

This pattern — rather than the pelvic floor itself — is the source of most male pelvic symptoms. Urgency, incomplete emptying, groin tension, and pain with sitting are all consistent with a floor that is working against a pressure system it cannot keep up with. External, hands-on assessment identifies where the canister has broken down. Restoring it from above resolves the pelvic symptoms below.

Women’s Health

Women’s Pelvic Floor (external assessment only)

The same pressure system, expressed differently.

Leakage with exercise, urgency, or pressure during exertion points to how the canister manages load — not simply to a weak pelvic floor

Pelvic girdle pain, SI joint pain, and hip pain postpartum often resolve when the pressure system above the pelvis is restored and the floor stops compensating

What I often find

A canister that lost its coordination during pregnancy, delivery, or hormonal transition — assessed and treated entirely externally, working from the diaphragm and abdominal wall downward. The pelvic floor resolves as the system above it is restored.

External assessment and the canister model in women’s health

The pelvic floor is the floor of the pressure canister. When the canister loses coordination — whether from pregnancy, delivery, hormonal change, or years of compensation — the floor responds by either guarding or failing to respond at all. Both patterns produce symptoms. Both patterns share the same upstream cause.

My assessment and treatment is external: I work with the diaphragm, the rib cage, the abdominal wall, and the pelvic girdle. No internal work. The goal is to restore how pressure is generated and distributed throughout the canister, so the pelvic floor can return to its natural role — responding to load rather than fighting it. Most women notice changes in urgency, leakage, and pelvic pressure within the first few sessions as the system above begins to hold.

Don’t see your condition listed here? If you’ve been dealing with recurring pain that treatment hasn’t resolved — whether it’s your wrists, your ribs, your SI joint, or something else entirely — the same principle likely applies. Bring it to your first visit.