Back انصباب مفصلي Arabic Embassament articular Catalan Gelenkerguss German Hydarthrose French Hidrartrose Portuguese Hidrartroză Romanian Hydrartros Swedish Tràn dịch khớp Vietnamese
| Joint effusion | |
|---|---|
 | |
| A traumatic right knee effusion. Note the swelling lateral to the kneecap as marked by the arrow. | |
| Specialty | Orthopedics, rheumatology |
A joint effusion is the presence of increased intra-articular fluid.[1] It may affect any joint. Commonly it involves the knee (see knee effusion).