Subcutaneous bursa of tuberosity of tibia
Bursa subcutanea tuberositatis tibiae · Podkožní burza drsnatiny holenní kosti
Joints & cartilage
Looks like
A small sac between the skin and the bony bump just below the knee where the kneecap tendon attaches.
What it does
Lets the skin glide over the bump when kneeling.
Keeping it well
Swells with long kneeling ('clergyman's knee'). A red, hot swelling may be infected.
Related conditions
- ACL & meniscus injury
- Baker's (popliteal) cyst
- Chronic venous insufficiency
- Gout
- Growing pains
- Haemophilia & bleeding disorders
- Juvenile idiopathic arthritis
- Lyme disease
- Lymphatic filariasis (elephantiasis)
- Lymphoedema
- Marfan syndrome & connective tissue disorders
- Osteoarthritis
- Pseudogout (calcium pyrophosphate disease)
- Psoriatic arthritis
- Reactive arthritis
- Restless legs syndrome
- Rheumatic fever & rheumatic heart disease
- Rheumatoid arthritis
- Septic arthritis
- Systemic lupus erythematosus
- Temporomandibular joint disorder
- Varicose veins