Knee & Thigh Pain · Walnut Creek
Move Past Knee Pain. Get Back to Performing.
Conservative, non-surgical care in Walnut Creek for knee and thigh pain — runner's knee, meniscus tears, ACL and MCL injuries, osteoarthritis, and hamstring and quad strains — for athletes, lifters, runners, and active adults who want to keep moving.
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 diagnosis, treatment, rehabilitation, and return to performance are treated as connected parts of the same process.
Knee pain affects all aspects of your life
Going down stairs. Getting out of the car. Squatting to lift something. The first mile of a run, or the last set of the workout. The knee is the body's largest joint, and it carries you through nearly everything. When knee pain arises, it simply cannot be ignored.
At Performance Sport Care in Walnut Creek, the first question is practical: what is keeping this knee or thigh from doing what you need it to do?
Sometimes the answer is relatively simple. Other times several things matter at once — a change in training load, loss of strength, reduced tolerance to running or lifting, restricted motion above or below the knee, an old injury, recovery, or the condition of the joint itself.
We sort those possibilities through the history and examination, then build the plan around what the findings support and what you are trying to get back to.
Personalized treatment for knee & thigh pain
At Performance Sport Care, we understand that no two knees are alike. Dr. Cancel builds each recovery plan around your specific diagnosis, your sport, and your goals. That professional-athletics influence shapes how he thinks about progression, load, rehabilitation, and return to performance, while the plan itself is built around your diagnosis, your goals, and your level of activity. His decades as a National-level competitive bodybuilder and lifelong strength-training athlete also shape how he understands the way training loads the knee, hip, and thigh.
Because the knee rarely works in isolation, his assessment also considers the hip and ankle that can contribute to a knee problem, so the plan often addresses the entire kinetic chain, not just the knee in isolation. This is the same multi-factor thinking that informs our approach to every patient we treat.
Knee & thigh conditions we treat
Dr. Cancel provides non-surgical care for a wide range of knee and thigh conditions. Understanding what each one is — and what tends to bring it on — is the first step toward resolving it.
The Knee
Patellofemoral Pain (Runner's Knee)
An aching pain around or behind the kneecap that worsens with stairs, squatting, running, and long sitting. It commonly develops after a sudden increase in training and is often tied to weakness in the hip and gluteal muscles, limited mobility, and mechanics that overload the front of the knee.
Iliotibial (IT) Band Syndrome
A sharp pain on the outer side of the knee, common in runners and cyclists, that appears at a predictable point in a run or ride. It is typically brought on by rapid mileage increases, downhill or cambered surfaces, and weakness of the hip abductor and gluteal muscles.
Meniscus Tears
Catching, clicking, swelling, or pain with twisting and deep bending. Gradual, wear-related tears are common after the mid-thirties; traumatic tears may follow a twist or a loaded squat. Many respond well to non-surgical care — a landmark 10-year study recently confirmed why — though a knee that locks usually warrants a surgeon's opinion.
ACL & MCL Injuries
Ligament injuries that often follow a twist, awkward landing, or direct blow, producing instability or a sense of giving way. With surgeon approval, Dr. Cancel provides pre-hab and continuing post-surgical supervised exercise. Many isolated MCL injuries are managed without surgery.
Knee Osteoarthritis
Stiffness and a deep, aching pain, often worse after inactivity or after overdoing an activity. It develops over years from accumulated joint load, prior injury, and — frequently — added body weight bearing on the joint.
Patellar & Quadriceps Tendinopathy
Pain at the front of the knee, common in jumping and lifting athletes, that often eases during activity and re-intensifies afterward. It usually arises from high training volume, deep knee-dominant loading, and insufficient recovery.
The Thigh & Upper Leg
Hamstring Strains
A sudden, sharp pain at the back of the thigh, often mid-stride during sprinting or acceleration. Risk rises when high-speed conditioning lags behind training demands — part of why these cluster in preseason.
Quadriceps & Rectus Femoris Strains
Pain at the front of the thigh tied to kicking, sprinting, and explosive movements that combine hip extension with knee effort.
Adductor & Groin Strains
Pain along the inner thigh provoked by cutting, changes of direction, and wide leg movements — common in field, court, and skating sports.
Proximal Hamstring Tendinopathy
A deep, nagging ache at the sit-bone that worsens with prolonged sitting and uphill running, typically from repetitive loading without adequate progression.
Patients we help
Knee and thigh pain looks different in a lifter than it does in a runner or an active grandparent. These are a few of the people we see most often.
The strength athlete with anterior knee pain
After a stretch of high-volume leg work and too few deloads, a deep ache settles in at the front of the knee on every descent. Dr. Cancel identifies the load-and-mechanics pattern behind it and adjusts the training so progress continues.
The runner whose knee flared up
As mileage or hills increase, pain can appear around the kneecap or along the outside of the knee even after a previously pain-free build. Many of these problems improve when the training load is adjusted and the runner rebuilds the strength and tolerance needed for the next progression.
The active adult told they need a scope
An MRI shows a degenerative meniscus tear and surgery is raised. For wear-related tears in this age group, current evidence suggests supervised rehabilitation frequently matches surgical outcomes, and Dr. Cancel offers an honest assessment of which path makes sense.
The athlete who keeps re-pulling a hamstring
A hamstring that feels fine in the gym may still be unprepared for high-speed running. Recurrent strains are one reason rehabilitation should progress beyond basic strengthening into appropriate sprint exposure and return-to-running work before the athlete is considered fully ready.
The person slowing down from arthritis
Stairs are avoided and activities are quietly given up. Muscles weaken, joint support diminishes, and arthritis progresses regardless of rest. Arthritic knees respond to the right exercise better than most people expect — rebuilding strength and confidence is the heart of the plan.
How we treat knee & thigh pain
We combine proven techniques into a single, coordinated plan — and we lead with what the evidence shows works best.
Start With the Knee in Front of Us
Every plan begins with a careful history and physical examination. We look for the findings that fit the symptoms, screen for instability or other circumstances that deserve specialty referral, and use imaging when it is likely to change the decision.
Supervised Strength & Neuromuscular Training
Progressive strength and neuromuscular training is central to many knee and thigh rehabilitation plans. The exact emphasis depends on the condition. Knee osteoarthritis, patellofemoral pain, hamstring injuries, ligament rehabilitation, and return to running do not all need the same program, but all may require a deliberate progression of strength, control, and load tolerance. Much of this work takes place in our on-site rehabilitation gym, where it is supervised for correct technique, appropriate load, and steady progression.
Manual Therapy & Chiropractic Care
Soft-tissue treatment, joint mobilization, and selected chiropractic techniques may be used to reduce pain or improve mobility through the hip, knee, and ankle when those limitations are interfering with rehabilitation.
Movement & Load Retraining
We refine the squatting, landing, running, and cutting patterns that often contribute to injury, so the joint is loaded in the way it is built to tolerate.
Nutritional Guidance
When body weight is materially increasing the load on an arthritic knee, or when recovery and protein intake deserve attention, practical nutrition guidance can support the overall plan. It is supportive care, not a substitute for the knee rehabilitation itself.
Many knee and thigh problems respond well to skilled, progressive conservative care. When the findings point elsewhere, we refer rather than stretching conservative treatment beyond its useful role.
Evidence & further reading
Our approach reflects current peer-reviewed evidence in sports medicine and rehabilitation. Representative sources:
- Messier SP, et al. Effect of diet and exercise on knee pain in patients with osteoarthritis and overweight or obesity. JAMA. 2022;328(22):2242–2255. View study
- Barton CJ, et al. The “Best Practice Guide to Conservative Management of Patellofemoral Pain.” Br J Sports Med. 2015;49(14):923–934. View study
- Bolgla LA, et al. National Athletic Trainers’ Association position statement: management of individuals with patellofemoral pain. J Athl Train. 2018;53(9):820–836. View study
- Goode AP, et al. Eccentric training for prevention of hamstring injuries may depend on intervention compliance: a systematic review and meta-analysis. Br J Sports Med. 2015;49(6):349–356. View study
- Svantesson J, et al. Rehabilitation of medial collateral ligament injuries: a systematic review. BMJ Open Sport Exerc Med. 2024;10(2):e001750. View study
Take the first step toward pain-free movement
If knee or thigh pain is limiting your training, your work, or simply your day, there's no need to keep living with it. Schedule an evaluation with Dr. Douglas Cancel and get an honest plan built around your knee, your sport, and your goals.
Request an Appointment or call (925) 945-1155Can a chiropractor actually help with knee pain?
For many musculoskeletal knee problems, conservative evaluation and rehabilitation can be appropriate. Care at Performance Sport Care is not built around adjusting the knee. Dr. Cancel evaluates the knee together with relevant hip, ankle, strength, loading, and movement findings, then determines whether hands-on treatment, rehabilitation, imaging, or referral makes sense.
What’s the best treatment for runner’s knee (patellofemoral pain)?
Exercise, particularly appropriately selected hip and knee strengthening, together with sensible load management and a graded return to running, is strongly supported for patellofemoral pain. Manual treatment may be used as an adjunct when pain or restricted motion is interfering with rehabilitation, but it is not a substitute for rebuilding strength and running tolerance.
Why does my knee hurt when I squat or do leg presses?
Anterior knee pain during squatting or leg pressing can be influenced by training volume, recent load changes, range of motion, exercise selection, knee and hip strength, ankle motion, technique, and the condition of the knee itself. Dr. Cancel evaluates those factors rather than assuming that every lifter with knee pain has the same loading error.
Can a meniscus tear improve without surgery?
Yes, many people with degenerative meniscal tears improve with exercise-based conservative care and do not require surgery. An acute traumatic tear with true mechanical locking, major loss of motion, or other concerning findings is a different situation and may require orthopedic evaluation. The decision should be based on symptoms, examination, function, imaging when appropriate, and the type of tear rather than the MRI finding alone.
Do you treat thigh injuries like hamstring, quad, and groin strains?
Yes — they’re central to what we do. Rehabilitation progresses from gentle isometrics to progressive and eccentric loading, then to sprinting, cutting, and sport-specific work. For hamstring injuries in particular, completing an appropriate progressive strengthening and return-to-running or sprinting program can help reduce reinjury risk.
Does strengthening really help knee osteoarthritis?
Yes — it’s one of the best-supported findings in musculoskeletal medicine. Progressive quadriceps and hip strengthening reduces pain and improves function, and exercise is the first-line recommendation in clinical guidelines for knee osteoarthritis. Where extra body weight is loading the joint, combining exercise with nutrition support improves results even further.
Can I keep training or running while my knee is treated?
Often, but sometimes with temporary modification. Whether you should keep running or training depends on the diagnosis, symptoms, and loads involved. Dr. Cancel identifies what can continue, what should be reduced or changed, and what should temporarily stop.
Do I need an MRI before starting treatment?
Not necessarily. Dr. Cancel performs a thorough orthopedic exam and orders imaging only when it will change the clinical decision. Many knee and thigh conditions can be accurately diagnosed and effectively treated without an immediate MRI.
When does knee or thigh pain need a surgeon instead?
A knee that locks and won’t fully straighten, a complete ACL tear with giving-way, a suspected multi-ligament injury, a full tendon rupture, or red flags such as inability to bear weight, deformity, numbness, or a cold foot all warrant prompt orthopedic evaluation. We screen for these at your first visit, refer quickly when needed, and handle your rehabilitation afterward.
How long does knee or thigh rehabilitation take?
It varies by diagnosis, severity, and the activity you are trying to return to. A mild muscle injury, chronic patellofemoral pain, degenerative meniscus symptoms, and post-surgical ACL rehabilitation have very different timelines. Dr. Cancel gives you a milestone-based estimate after the evaluation rather than assigning the same recovery window to every knee problem.
Where is Performance Sport Care located?
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.
Don’t let knee pain hold you back from the activities you love.
Call (925) 945-1155 or click the ‘Request An Appointment’ link to schedule your consultation today. Let Dr. Cancel and his team guide you toward a pain-free, active life.