Symptoms and tests
Is pain on the inside of my knee osteoarthritis?
How clinicians assess osteoarthritis, meniscal problems and pain around the pes anserine tendons.
At a glance
- Record where the pain is, how it began, and any swelling or locking.
- Examination helps distinguish joint, meniscal and pes anserine problems, which may coexist.
- Adjust activities that worsen pain and continue exercise appropriate to your condition.
Start by reducing movements that worsen the pain and noting exactly where and when it hurts. Pain on the inside of the knee alone cannot establish a diagnosis of osteoarthritis. How the pain began, swelling, walking ability and whether the knee straightens fully all help guide treatment.
Three areas considered when assessing inner-knee pain
- 01
Joint surfaces
Pain, stiffness and walking function help assess osteoarthritis.
- 02
Meniscus within the joint
The injury history, swelling and restricted movement are assessed.
- 03
Pes anserine below the joint
The tendon attachment and nearby bursa are checked for tenderness.
Diagram comparing the knee joint surfaces, the meniscus inside the joint and the pes anserine region below the joint line
Record the location and how the pain began
Try pointing with one finger to the most painful spot. Whether it is at the joint line between the thigh and shin bones, or lower down on the inner shin, can help the examination. There is no need to press hard repeatedly to test the pain. Note whether stairs, level walking or getting up from a chair is more uncomfortable. Also note whether rest helps, whether pain occurs at night, and whether you limp on the painful side. Bring previous test results and tell your clinician about your current medicines.
Tell your clinician whether the pain began suddenly, developed gradually after increasing activity, or followed a twist or fall. Practical changes such as ‘stairs hurt but I can walk on level ground’ or ‘it swells after walking’ are useful. Also distinguish a noise from a knee that stays stuck and cannot fully straighten.
Osteoarthritis, the meniscus and the pes anserine involve different structures
Osteoarthritis may cause pain during weight-bearing activities and stiffness. The meniscus distributes load within the joint; a twisting injury or degenerative change may cause pain, swelling or catching. Both problems can occur together, so inner-knee pain or a meniscal tear on MRI alone does not determine the need for surgery.
The pes anserine is where several tendons attach below the inner side of the knee. Irritation of the nearby bursa may cause tenderness below the joint line or discomfort on stairs. Its symptoms can resemble osteoarthritis, and other causes such as ligament injury or a stress fracture may need assessment. These distinctions are examination clues, rather than a self-diagnosis checklist.
Reduce pain-provoking loads while maintaining suitable movement
First reduce activities that repeatedly worsen pain, such as unusually long walks, steep stairs or deep squatting. Dividing a walk into shorter outings or choosing a level route may help you adjust the load. With osteoarthritis, therapeutic exercise to maintain thigh strength and overall fitness is important. Choose exercise suited to your current condition and continue gradually.
Check swelling and walking ability after exercise as well as pain on the day. A clear increase in symptoms calls for adjusting the intensity or method. Do not push through exercise if an acute injury is suspected or weight-bearing is difficult. Skin condition, other illnesses and current medicines also matter when choosing compresses or pain relief; discuss medicines with a clinician or pharmacist.
Choose tests to answer questions raised by the examination
An assessment considers the location of pain, swelling, range of motion and ligament stability. X-rays help assess bone, joint space and alignment; MRI shows structures inside the joint, such as menisci and ligaments, in more detail. Typical osteoarthritis symptoms do not mean everyone needs MRI. The purpose of testing changes when an acute injury or another condition is suspected.
Arrange an outpatient assessment for persistent pain that interferes with daily activities. Seek same-day care if the knee remains locked and cannot straighten. Go directly to an emergency department for major swelling developing rapidly after an injury or a complete inability to bear weight. A red, hot, swollen knee with fever or chills also needs immediate assessment. Each is an independent warning sign; you do not need to wait for several to occur together.
Common Questions
Does inner-knee pain mean the cartilage has worn away?
Several structures can cause pain, including the joint, meniscus, bursae around tendons and ligaments. The history and examination matter alongside the location.
Does a clicking sound mean I need meniscus surgery?
A sound alone does not determine the need for surgery. Pain, swelling and genuine movement restriction are assessed. Seek prompt care if the knee stays locked and cannot straighten.
Do I need MRI straight away?
The history and examination first define what a test needs to clarify. Typical osteoarthritis can be assessed without MRI; MRI may help when an acute meniscal or ligament injury is suspected.
Evidence and references
01When to seek medical care
Each warning sign is a separate reason to seek care. Follow the action below if any one applies.
Emergency department · call 119 in Korea
- Call 119 for sudden breathlessness or chest pain, severe faintness or loss of consciousness. Do not wait for calf swelling to appear.
- Go to an emergency department if you suddenly cannot bear any weight, or if an injured knee swells rapidly or looks deformed. A cold or numb foot after injury also needs immediate assessment.
- Seek emergency care for a hot, swollen and severely painful joint with high fever, shaking chills, confusion or inability to bear weight.
- With back or leg pain, go immediately to an emergency department for new difficulty passing urine, loss of bladder or bowel control, or numbness around the genitals or anus. Severe or rapidly worsening weakness or numbness in both legs also needs immediate assessment.
Same-day assessment
- Arrange assessment today for a newly hot, swollen joint, sudden severe pain, or a knee locked so that it cannot fully straighten. Joint infection can occur without fever.
- Have new swelling or pain in one calf assessed today for a possible blood clot. Call 119 immediately if breathlessness or chest pain develops.
- Severe knee pain or a new limp in a growing adolescent may come from a hip condition such as slipped capital femoral epiphysis. Stop walking and sport and arrange assessment today. Go directly to emergency care if they cannot bear weight.
- Stop running and seek assessment today for new recurring groin pain, pain with walking or at night, or a limp. A femoral neck stress fracture needs to be considered. Keep weight off the painful leg until assessed. Go to emergency care if you cannot bear weight.
Book an outpatient appointment
- If none of the warning signs above is present, book an appointment for pain lasting a few weeks, repeated swelling or reduced daily activity and exercise.