Anterior knee pain describes discomfort at the front of the knee, around or behind the patella (kneecap). It is a broad term covering several distinct conditions, the most common of which is Patellofemoral Pain Syndrome (PFPS) — often called runner's knee.
Despite the name, runner's knee affects far more than just runners. It is one of the most common musculoskeletal complaints in active people and is closely linked to how forces from the foot and hip are transmitted through the knee during loading activities. This is why podiatric assessment — covering gait, foot mechanics, and lower limb biomechanics — is a critical part of effective diagnosis and treatment.
Several distinct conditions can present as anterior knee pain. Accurate diagnosis determines the correct treatment approach.
Patellofemoral Pain Syndrome (PFPS)
Pain under or around the kneecap, typically worse with running, squatting, stairs or prolonged sitting. The most common cause of anterior knee pain.
Patella Tendinopathy
Overload of the patella tendon just below the kneecap — common in runners and jumping athletes. Requires a progressive loading approach.
Infrapatellar Fat Pad Irritation
Irritation of the fat pad beneath the kneecap causing sharp pain with movement or knee extension. Often mistaken for PFPS.
Chondral & Cartilage Defects
Damage to the cartilage surface inside the joint. Less common but can present similarly — distinguished through careful clinical assessment and imaging.
Referred Pain
Pain referred from deeper joint structures, the hip, or lumbar spine can mimic anterior knee pain and must be ruled out during assessment.
Aching, sharp or burning pain around, behind or under the kneecap
Pain worse on stairs, squatting, running or kneeling
Stiffness or aching after prolonged sitting — the "theatre sign"
A feeling of instability or catching under the kneecap
Swelling or puffiness around the kneecap after activity
In runners: pain that increases with volume, speed or surface changes
Anterior knee pain is rarely caused by the knee in isolation. The most consistent drivers involve the foot, ankle, hip and movement patterns that alter how load is distributed through the patellofemoral joint.
Hip & Gluteal Weakness
Weak hip abductors and external rotators allow the knee to collapse inward during loading — one of the most consistent drivers of patellofemoral pain.
Foot & Ankle Mechanics
Overpronation and limited ankle dorsiflexion alter how forces travel up the leg, increasing load on the patellofemoral joint with every step.
Movement Pattern Faults
Excessive hip adduction, knee valgus or altered trunk position during running and single-leg activities increase patellofemoral contact stress.
Training Load Spike
A sudden increase in running volume, hill work or jump training is a common trigger — the joint cannot adapt quickly enough to the increased demand.
Quadriceps & Knee Extensor Weakness
Reduced quad strength and endurance increases patellofemoral joint stress, particularly during eccentric loading activities like downhill running or stairs.
The foot is the base of the kinetic chain. How it contacts the ground — and how forces travel from the foot through the ankle, knee and hip — directly influences patellofemoral joint loading. Gait analysis allows us to assess running technique, foot strike pattern, step rate and joint alignment in real time.
Orthotic insoles can modify how forces pass through the foot and knee. When foot mechanics are contributing to anterior knee pain, insoles reduce peak patellofemoral loading and support the rehabilitation process. They are most effective as part of an integrated plan that includes strength work and movement retraining — not as a stand-alone solution.
Diagnosis requires a detailed assessment of the full lower limb chain — not just the knee. We evaluate movement patterns, foot posture, hip strength, footwear, and gait to identify the specific drivers of your pain.
Full history — onset, aggravating and relieving factors, training changes
Physical examination of knee, foot, hip and pelvis mechanics
Movement analysis — single-leg squats, step-downs and running gait
Footwear and in-shoe pressure assessment
Imaging referral (MRI/X-ray) where structural problems are suspected
Collaboration with physiotherapists or S&C coaches where needed
We take an integrated approach combining biomechanics, strength and conditioning, and footwear optimisation. Your plan is tailored to the type and severity of your knee pain, your activity level, and your goals.
01
Avoid sudden increases in running volume, hill work or jump training
02
Wear supportive footwear — avoid very worn or unsupportive shoes during a flare
03
Include regular hip, glute and foot stability work — not just stretching
04
Monitor overall training load, sleep, stress and recovery — these all influence pain sensitivity
If your anterior knee pain has lasted more than 2–3 weeks, is limiting your training or daily activity, or keeps returning after rest, an expert assessment is recommended. Early movement-based strategies produce significantly better outcomes than waiting for symptoms to become chronic.
Patellofemoral pain that is left untreated frequently becomes persistent — addressing the biomechanical drivers early changes the trajectory.
What's the difference between runner's knee and patella tendinopathy?
Runner's knee (patellofemoral pain) typically feels around or behind the kneecap and is aggravated by bending, running and stairs. Patella tendinopathy is usually felt as a localised pain just below the kneecap and is more strongly linked to jumping and running overload. The distinction matters because the treatment approaches differ.
Can insoles help anterior knee pain?
Yes — when foot mechanics are contributing to how the knee is loaded, insoles can reduce peak patellofemoral forces and support gait retraining and strengthening. They work best as part of a combined approach rather than as a standalone treatment.
Will I be able to run again pain-free?
For the majority of people, yes. With early intervention, targeted biomechanical work, progressive strength training and sensible load management, the prognosis for returning to full running is good. Complete rest is rarely necessary or helpful.
Do I need a scan?
In most cases, no. Clinical assessment provides sufficient information to diagnose and treat anterior knee pain effectively. Imaging is arranged where there are signs of structural damage — cartilage defects, stress fractures, or where the diagnosis remains unclear after examination.
Should I stop running completely?
Not necessarily. Modified training — reducing volume, avoiding hills or speed work temporarily, and adjusting footwear — often allows continued running while the condition is addressed. We provide a clear, objective load management plan from the outset.
Ready to book your knee assessment?
We'll identify the biomechanical drivers of your pain and build a plan to get you back to full activity.
