Other knee-like joint structures in animals:

* Equine knee, in horses and their kin

* Avian knee, in birds

* Arthropod knee, in legged kin of shellfish and insects

Non-animal structures with relatively sharp bends:

* Knee (construction), a bent piece of wood that takes stress, as commonly used in construction of wooden boats

* Cypress knee, structure on cypress-tree root

Knee can also refer to:

• A strike with the knee, see Knee (strike).
• knee of the curve, for example see Maximum power point tracker