Performance Sport Care

Foot, Ankle & Leg Pain

Get Back on Your Feet — and Back to Performing.

Conservative, non-surgical care in Walnut Creek for foot, ankle, and leg pain — plantar fasciitis, Achilles tendinopathy, ankle sprains, shin splints, and overuse injuries — for athletes, lifters, runners, and active adults who want to keep moving.

At Performance Sport Care, Dr. Douglas Cancel brings more than four decades of clinical experience to an approach inspired by the coordinated model used in high-level professional athletics, where evaluation, treatment, rehabilitation, and return to performance are treated as connected parts of the same process.

Stories We Often Encounter — and What Was Actually Going On

Many people in Walnut Creek and the surrounding communities come to us after they have already tried a stretch of physical therapy, a few chiropractic visits, or several brief medical appointments and still have foot, ankle, or leg pain. They often start to believe the problem is just something they have to live with. Here are three common types of stories we see — and the good news is that all three are the kind of problem we are built to help. Focused evaluation. Targeted treatment. Supervised strength rehabilitation when appropriate.

The examples below are composites based on recurring presentation patterns. They are illustrative, not individual patient testimonials.

Story 1— “My Shin Pain Kept Coming Back Every Time I Ran”

“I’m in my 30s and run the trails around Walnut Creek. Every time I built up my mileage, the inside of my shin started aching again. I was told it was ‘just shin splints,’ given a calf stretch, and told to rest. Rest helped — until I ran again, and it came right back. I later learned my calf and hip strength couldn’t handle the load I was asking my shins to absorb. Once we fixed that and progressed my training properly, the pain stopped returning.”

Story 2 — “I Thought My Achilles Was Just Going to Be Bad Forever”

“I lift hard and I’m in my 40s. My Achilles got thick, stiff, and painful — worst with the first steps in the morning. One person told me to rest it completely; another told me to push through it. Neither worked. What actually changed things was a progressive loading program that rebuilt the tendon’s capacity, dosed at intensities I’d never been given before. It wasn’t a quick fix, but it was a real one.”

Story 3 — “Treating My Heel Alone Never Fixed My Plantar Fasciitis”

“I’m on my feet all day and the bottom of my heel hurt for months. I’d been rolling it on a ball and icing it with no lasting change. It turned out my tight calves, limited ankle motion, and a sudden jump in standing hours were driving the whole thing. When the plan addressed those — not just the heel — I finally got better.”

These examples illustrate why the same symptom label can reflect different contributing factors. The important point is not that previous care was necessarily wrong. A plan may simply need to account for the current load, strength, motion, work or training demands, and progression back to activity. At Performance Sport Care, our professional-athletics-inspired approach can bring hands-on care, progressive loading, strength rehabilitation, and return-to-activity planning into one coordinated process when those elements are relevant.

A Professional-Athletics-Inspired Model of Care

In high-level professional athletics, injuries are not managed as isolated treatment sessions. Evaluation, hands-on care, rehabilitation, progressive loading, and return to performance are treated as connected parts of one process. That coordinated model is the inspiration for how Performance Sport Care approaches foot, ankle, and leg problems in Walnut Creek.

Many of these problems involve a mismatch between what the involved tissue can currently tolerate and what work, training, or sport is asking it to absorb. When that is the case, reducing a provocative load may help settle symptoms, but the longer-term work is rebuilding motion, strength, endurance, and load tolerance so the patient can move back toward normal demands.

That is where our on-site rehabilitation facility matters. When appropriate, hands-on treatment and supervised progressive loading can be coordinated in the same setting and progressed toward the patient’s actual goals, whether that means walking, standing through a workday, running, lifting, or sport.

Foot, Ankle & Leg Conditions We Treat

We evaluate and treat the full spectrum of lower-leg, ankle, and foot pain. Each condition has its own drivers, and getting the diagnosis right is what separates a successful course of care from months of false starts.

Shin Splints (Medial Tibial Stress Syndrome)

Repetitive tibial load, calf and soleus fatigue, and training spikes — not just “running too much.” Care targets graded loading, calf and hip strength, footwear, and a smart return, while screening for stress fracture.

Ankle Sprains (Lateral)

Early protected loading, bracing or taping, and progressive strength and balance work beat prolonged rest — which actually raises the risk of chronic instability. Manual therapy helps restore lost ankle motion.

High Ankle Sprains (Syndesmotic)

These involve the joint between the two lower-leg bones and need more caution and a slower, staged return. We assess stability carefully and refer promptly for surgical evaluation when the findings call for it.

Achilles Tendinopathy

Chronic Achilles pain is not simple inflammation — it’s a tendon that has lost load tolerance. Progressive calf loading (heavy-slow or eccentric) is the central treatment; complete rest often makes it worse.

Plantar Fasciitis / Plantar Fasciopathy

Rarely just a heel problem. Calf tightness, limited dorsiflexion, standing volume, and rapid training jumps usually contribute. We treat the driver — stretching, loading, taping, and footwear — not only the sore spot.

Overuse Muscle Pain & Calf Strains

Exertional and repetitive-overload leg pain responds to deloading, graded strengthening, mobility, and recovery. We rule out the serious causes first, then rebuild capacity for your sport or job.

Foot Type, Flat Feet, and Your Back

Foot structure matters, but it is not destiny. There is a real but modest association between dynamic overpronation and low back pain — flat feet are a possible contributing factor in some people, not a universal cause. A high-arched (cavus) foot is stiffer and absorbs shock less well, which can raise local foot and ankle stress and, plausibly, loading further up the chain. We assess how your foot actually behaves under load and treat accordingly, rather than treating every flat or high arch as a problem.

Who We Can Help

If your pain is driven by how you load your body — training, lifting, running, standing, or simply ramping up activity — there is a strong chance we can help. The people who do best in our care span a wide range:

Bodybuilders & liftersAchilles and plantar pain after calf-raise, leg-press, or hack-squat spikes, contest-prep underfueling, or a footwear change. This is home turf for us.
CrossFit athletesShin splints, sprains, and Achilles pain from double-unders, box jumps, running intervals, and lifting under fatigue. See our CrossFit recovery page.
RunnersShin splints, Achilles tendinopathy, and plantar fasciitis after mileage jumps, hill or speed work, worn shoes, or low cadence.
Active & everyday adultsNew walking programs, long hours on hard floors, weekend sports, a misstep off a curb, or a “couch-to-5K” that outpaced your conditioning.

We place the emphasis where it belongs: on the many people we can help — not on a short list of those we can’t.

You may be a good fit for Performance Sport Care if your foot, ankle, or leg symptoms are limiting walking, work, training, or sport and you are looking for a plan that can combine clinical care with supervised rehabilitation. The evaluation determines whether care here, imaging, or another specialist makes the most sense.

How We Treat Foot, Ankle & Leg Problems

Our care integrates hands-on treatment with progressive, supervised exercise and clear education about the loading patterns driving your condition. Each tool is used where the evidence and your exam findings support it:

Supervised Strength Rehabilitation — the engine of recovery

Progressive strengthening and loading are central to many of the foot, ankle, and leg conditions we treat. This work rebuilds tendon and tissue capacity, calf endurance, foot control, and landing mechanics. Our facility is purpose-built for supervised strength rehabilitation, so exercise can be watched, adjusted, and progressively loaded with real equipment rather than ending at a printed home program.

Chiropractic & Manual Therapy — a powerful adjunct

Talocrural, subtalar, and midfoot mobilization, soft-tissue work, and joint care may improve ankle motion and reduce pain enough to make active rehabilitation easier. The evidence supports manual therapy combined with exercise, which is exactly how we use it.

Movement & Gait Retraining

How you land, squat, run, cut, and absorb load matters more than static posture. We work on ankle motion, foot tripod control, hip strength, running cadence, and landing mechanics — especially for symptoms that only appear under fatigue, speed, or volume.

Selective Stretching & Nutritional Support

Stretching is matched to the tissue and stage of injury — never aggressive or one-size-fits-all. And when it is clinically relevant, nutritional guidance protects recovery: adequate energy and protein, correcting deficiencies, and supporting bone and tendon health. This is foundation work, not an afterthought.

Why Rebuilding Capacity Matters

Symptoms can settle before capacity is rebuilt. When that happens, some people are left with persistent weakness, lost ankle motion, instability, reduced tolerance for training or work, or a higher risk of recurrence. An inadequately rehabilitated lateral ankle sprain, for example, can progress to chronic ankle instability and, over time, cartilage injury and early post-traumatic arthritis.

Downstream, the body redistributes load. A painful foot or ankle can shorten your stride, change how your knee tracks, overload the opposite leg, and alter how your hips and lower back move. Over time that can feed into kneecap pain, IT-band symptoms, hip overload, and low back pain. These effects aren’t guaranteed or purely one-directional — workload, sleep, body mass, and training history all matter — but they are common enough that treating the original problem properly is worth doing right the first time.

When You Need Something Else — and Our Honest Promise

Most foot, ankle, and leg pain is an excellent fit for conservative care. A smaller set of findings calls for prompt medical or surgical referral instead — and when that is your situation, Dr. Cancel will tell you directly, on the spot, so the right care is never delayed.

We refer promptly when we see: signs of a suspected Achilles rupture or fracture; an unstable high ankle sprain; severe night or rest pain, fever, or progressive neurologic signs; calf swelling with shortness of breath (a possible blood clot); or dark urine and extreme muscle pain after intense training (a possible muscle-breakdown emergency).

With more than four decades of practice, Dr. Cancel knows the medical resources in our community well and will help guide you to the appropriate next step. Knowing the difference is part of why our patients trust us.

What One Motivated Patient Can Accomplish Here

A great recovery is not a miracle. It is a seasoned clinician, a properly designed plan, the right equipment and supervision, and a motivated patient willing to show up and do the work. When those elements line up, what well-executed conservative care can accomplish is often well beyond what people have been led to expect.

Many of our patients arrive after months of care that wasn’t working. Many of them end up running again, lifting again, training again, and standing through a workday without pain again. We don’t promise outcomes — we promise the caliber of care it takes to make great outcomes possible when they are possible. For a motivated patient with a properly diagnosed, conservatively manageable problem, working in a supervised rehab facility with a sports chiropractor who has been doing this for more than four decades, the realistic upside can be a great deal more than most have been told.

Ready for a careful evaluation and an honest answer about your foot, ankle, or leg pain?

Walnut Creek, CA · Serving Concord, Pleasant Hill, Lafayette, Alamo, Danville, Orinda & Moraga

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or call (925) 945-1155

Dr. Cancel treats plantar fasciitis, Achilles tendinopathy (often called “Achilles tendinitis”), lateral and high (syndesmotic) ankle sprains, shin splints (medial tibial stress syndrome), calf strains, and repetitive overuse leg pain. Many of these problems involve a mismatch between tissue capacity and the loads being placed on it, although traumatic, structural, neurological, and other causes also need to be considered. Treatment is selected according to the diagnosis.

Many patients see meaningful improvement within 6–8 weeks of consistent, well-dosed care; chronic cases present for many months can take longer. Clinical guidelines support a stepped plan of plantar-fascia and calf stretching, taping, loading, footwear changes, and orthoses for selected patients (Koc et al., JOSPT 2023; Morrissey et al., BJSM 2021). A common mistake is treating only the heel — Dr. Cancel addresses factors such as calf function, ankle motion, footwear, training changes, and loading patterns that may be contributing.

Yes. We call it tendinopathy because chronic Achilles pain is not simple inflammation — it reflects tendon overload and reduced load tolerance. The central, best-supported treatment is progressive calf loading (heavy-slow resistance or eccentric exercise), with manual therapy and selective stretching as helpful adjuncts (Martin et al., JOSPT 2018; Chimenti et al., JOSPT 2024). Prolonged rest does not rebuild the tendon’s ability to tolerate load, so rehabilitation usually involves finding an appropriate level of loading and progressing it.

Usually not entirely. Dr. Cancel assesses what activity is safe to continue and modifies your training rather than shutting it down, which helps maintain fitness while the injury heals. When continued activity is appropriate, a temporary load reduction followed by graded progression is often preferable to prolonged complete rest.

Ordinary shin splints (medial tibial stress syndrome) usually ache along the inner shin and improve with load management plus calf, tibialis, and hip strengthening (Galbraith & Lavallee, 2009). Pain that becomes focal and sharp at one spot on the bone, hurts at rest, or worsens with hopping raises concern for a tibial stress fracture — which we screen for and image or refer when indicated.

It can. An ankle sprain that does not recover adequate motion, strength, balance, and stability can increase the risk of recurrent sprain and chronic ankle instability. Evidence favors early protected loading, bracing or taping, and progressive strength and balance training to reduce reinjury (Vuurberg et al., BJSM 2018; Wagemans et al., PLOS ONE 2022). Treating a sprain well the first time is the best protection against the downstream cost.

A high ankle sprain involves the syndesmosis — the connection between the two lower-leg bones above the ankle. Stable mild-to-moderate cases can be managed conservatively, but they need more caution and a slower return than a typical lateral sprain (Williams & Allen, 2010; van Dijk et al., 2016). The key is stability: widening, fracture, inability to bear weight, or pain with external rotation calls for prompt orthopedic evaluation, which we pursue without delay.

There is a real but modest association, mostly tied to dynamic overpronation during walking rather than simply a flat-looking arch at rest (Menz et al., Framingham Foot Study, 2013). Flat feet may be a contributing factor in some people — especially with pain, weakness, or high load — but they are not a universal cause of back pain. We assess how your foot behaves under load and treat selectively, rather than treating every flat foot as pathological.

Progressive strengthening is central to rehabilitation for many foot, ankle, and leg conditions because symptoms settling does not necessarily restore tissue capacity. Some patients can perform much of that work independently. Supervision becomes particularly useful when exercise selection, technique, loading, or progression needs closer attention.

Performance Sport Care combines a careful orthopedic and functional evaluation, diagnosis-guided treatment, and supervised strength rehabilitation in the same facility. Chiropractic and manual treatment are used alongside active rehabilitation when appropriate rather than being applied as a single universal treatment.

Performance Sport Care is located at 1776 Ygnacio Valley Road, Suite 106, Walnut Creek, CA 94598. Call (925) 945-1155. We serve Walnut Creek, Lafayette, Danville, Concord, Pleasant Hill, and greater Contra Costa County.

The office is a short walk from John Muir Medical Center, next door to the Walnut Creek Tennis Club, and just steps from Heather Farm Park, with convenient on-site parking. Ygnacio Plaza and Sports Basement are directly across the street.

Clinical decisions integrate the patient’s history, examination findings, goals, response to care, and relevant published evidence. That evidence includes Vuurberg et al. (BJSM 2018) and Wagemans et al. (PLOS ONE 2022) on ankle sprains; Martin et al. (JOSPT 2018) and Chimenti et al. (JOSPT 2024) on Achilles tendinopathy; Koc et al. (JOSPT 2023) and Morrissey et al. (BJSM 2021) on plantar heel pain; Galbraith & Lavallee (2009) on shin splints; and Williams & Allen (2010) and van Dijk et al. (2016) on high ankle sprains. These represent a small sample of the literature on lower-limb conservative care.

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