27/08/2026
๐ ๐ฒ๐ฑ๐ถ๐ฎ๐น ๐๐ป๐ฒ๐ฒ ๐ฃ๐ฎ๐ถ๐ป ๐๐ฒ๐น๐ผ๐ ๐ง๐ต๐ฒ ๐๐ผ๐ถ๐ป๐ ๐๐ถ๐ป๐ฒ? ๐ง๐ต๐ถ๐ป๐ธ ๐ฃ๐ฒ๐ ๐๐ป๐๐ฒ๐ฟ๐ถ๐ป๐ฒ ๐๐๐ฟ๐๐ถ๐๐ถ๐
Not every case of medial knee pain is a meniscus tear or MCL injury.
Sometimes the pain comes from a small bursa located below and slightly behind the medial knee joint line:
๐ ๐ฃ๐ฒ๐ ๐๐ป๐๐ฒ๐ฟ๐ถ๐ป๐ฒ ๐๐๐ฟ๐๐ถ๐๐ถ๐
The pes anserinus is formed by the tendons of sartorius, gracilis and semitendinosus, inserting on the anteromedial proximal tibia. The bursa lies deep to these tendons.
๐ ๐ช๐ต๐ฒ๐ฟ๐ฒ ๐๐ ๐ง๐ต๐ฒ ๐ฃ๐ฎ๐ถ๐ป?
โข Inner side of the knee
โข Typically about 4โ7 cm below the medial joint line
โข Localized tenderness over the proximal medial tibia
โข Usually no true intra-articular locking
โข Pain may increase with stairs or rising from a chair
โ ๏ธ ๐ช๐ต๐ฎ๐ ๐๐ฎ๐ป ๐๐ผ๐ป๐๐ฟ๐ถ๐ฏ๐๐๐ฒ?
Commonly associated factors include:
โข Repetitive running or sports activity
โข Hamstring tightness
โข Genu valgum
โข Pes planus / altered lower-limb alignment
โข Knee osteoarthritis
โข Higher body weight
โข Direct local trauma
โข Repetitive valgus and rotational loading
๐ ๐ง๐ต๐ฒ ๐๐ฒ๐ ๐๐น๐ถ๐ป๐ถ๐ฐ๐ฎ๐น ๐๐น๐๐ฒ
๐ Location matters.
Medial meniscus:
๐ Tenderness usually at the medial joint line
Pes anserine region:
๐ Tenderness is distal to the joint line, over the anteromedial proximal tibia.
This distinction can be extremely useful when assessing medial knee pain.
๐ ๐ช๐ต๐ผ ๐ ๐ฎ๐ ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ ๐๐?
It can occur in:
โข Runners and other athletes
โข People with knee OA
โข Individuals with valgus alignment
โข People with pes planus
โข Middle-aged and older adults
Importantly, pes anserine pain is not exclusive to one demographic and can occur in athletic populations as well.
๐ ๐ฃ๐ฒ๐ ๐๐ป๐๐ฒ๐ฟ๐ถ๐ป๐ฒ ๐ฉ๐ ๐ ๐ฒ๐ฑ๐ถ๐ฎ๐น ๐ ๐ฒ๐ป๐ถ๐๐ฐ๐๐
Pes Anserine Bursitis
๐ Pain below the joint line
๐ฏ Focal tenderness over pes anserine insertion
๐ช Often aggravated by stairs/rising
โ Usually no true mechanical locking
Medial Meniscus Pathology
๐ Joint-line tenderness
๐ Often associated with twisting
๐ Catching/locking may occur
๐ง Effusion may be present
These conditions can coexist, so clinical examination should not rely on location alone.
๐ช ๐ง๐ฟ๐ฒ๐ฎ๐๐บ๐ฒ๐ป๐
Most cases are managed conservatively.
โข Reduce aggravating activities temporarily
โข Ice for symptom relief when appropriate
โข Hamstring flexibility work
โข Progressive quadriceps strengthening
โข Hip and lower-limb strengthening
โข Address relevant alignment and movement factors
โข Gradual return to running/sport
Physical therapy and exercise are commonly used as first-line management, while injections may be considered for persistent symptoms after appropriate assessment. Surgery is rarely required.
๐ฉป ๐๐ผ ๐ฌ๐ผ๐ ๐ก๐ฒ๐ฒ๐ฑ ๐๐ป ๐ ๐ฅ๐?
Not necessarily.
Pes anserine bursitis is primarily a clinical diagnosis. Imaging can be useful when the diagnosis is uncertain or when another pathology needs to be excluded.
๐ ๐๐น๐ถ๐ป๐ถ๐ฐ๐ฎ๐น ๐ง๐ฎ๐ธ๐ฒ๐ฎ๐๐ฎ๐
Medial knee pain โ automatically a meniscus tear.
If the tenderness is several centimetres below the medial joint line, examine the pes anserine region.
๐ง Localize the pain before naming the pathology.
๐จโโ๏ธ Dr Ashutosh Srivastav PT
Neuro โข Ortho โข Sports Rehabilitation
๐ References
โข Mohseni M, Mabrouk A, Li D. Pes Anserine Bursitis. StatPearls. Updated 2024; available in NCBI Bookshelf.
โข Knee Bursae: A Comprehensive Review of Clinical Evaluation, Imaging Differentiation, and the Expanding Role of Biologic Therapies. 2025 systematic review.
โข MRI characteristics of cysts and โcyst-likeโ lesions in and around the knee. Review of anserine bursitis and its differential diagnosis.