Knee / Injury guide
Runner’s knee physical therapy
Front-of-knee pain can interrupt runs, stairs, and strength sessions. Learn how assessment, progressive hip and knee strength, and training adjustments may support your next steps.
For athletes & active adults in Waltham and Watertown, MA.
Talk to Dr. Allie
Clinical review pending. This draft is available for review and is not yet approved by Dr. Allie.
General education only. This guide does not diagnose an injury or replace individual medical advice.
What runner’s knee means
Runner’s knee is a common name for patellofemoral pain: discomfort around or behind the kneecap. It can affect runners, lifters, hikers, and people who do not play sports. Symptoms may develop after increases in running, jumping, or squat demands that exceed what the knee currently tolerates.
The label does not automatically mean arthritis, damaged cartilage, or a kneecap that needs realigning. This guide explains possibilities, not a diagnosis of your knee pain.
Common patterns, not a self-diagnosis
People often describe an ache at the front of the knee during stairs, hills, squats, or prolonged sitting with the knee bent. One knee or both may be affected. Clicking can accompany symptoms, but sound alone does not establish an injury.
Pain below the kneecap may involve the patellar tendon. Arthritis, meniscus injuries, and pain referred from the hip can also overlap. Swelling, locking, and the way symptoms began help guide the assessment.
Look beyond the painful rep
A physical therapist may review recent mileage, hills, strength sessions, footwear changes, previous injuries, and your goals. The examination can include knee motion, hip and thigh strength, and how you manage a squat, step-down, or running task when appropriate.
These findings help identify useful treatment targets rather than one supposedly perfect movement pattern. Imaging is not automatically needed; injury history, unusual findings, or persistent symptoms may warrant medical assessment or imaging to investigate other causes.
Build knee and hip capacity
Rehab commonly combines temporary training adjustments with progressive knee and hip strengthening. Exercise selection and difficulty depend on irritability, current strength, and the activities you want back. A plan might include:
- Squats through a tolerable range, step-ups, and gradually more demanding single-leg work.
- Changes to running distance, hills, or pace while maintaining tolerable alternative activity.
- Selected trials of taping or shoe inserts for symptom relief alongside exercise, not instead of it.
Make running a progression
Return decisions consider more than whether one run feels good. Walking and stairs, repeated strength tasks, running tolerance, and your response afterward all matter. A therapist can help choose a manageable starting dose and progress distance, speed, and hills without increasing everything together.
Watch for escalating pain, altered movement, or a worsening next-day pattern. Those are reasons to adjust and reassess, not push through to meet a calendar deadline.
When knee pain needs medical care
Arrange an assessment when pain repeatedly limits activity, the knee gives way, or training adjustments are not helping. A knee that becomes locked and cannot straighten, major swelling after an injury, or inability to bear weight needs prompt medical evaluation.
A hot, red, swollen knee with fever needs urgent medical care. Seek emergency care for an obvious deformity or a cold, numb foot after trauma rather than waiting for a routine PT appointment.