The medical term for outside the joint is "extrarticular." This term is used to describe structures, conditions, or treatments that occur outside of the joint capsule, distinguishing them from intraarticular elements, which are located within the joint space.
Articulation is the medical term meaning joint. The medical terminology combining form meaning joint is arthro-.
Arthrocentesis is the medical term meaning aspiration of fluid from a joint.
Joint Hypertrophy (hyper = a lot + troph = feed + y = process) is the general medical term for enlargement of a joint. There are also more specific terms depending on where the affected joint is located.
Flexing is the medical term meaning decreasing an angle as in bending a joint.
A joint prosthesis is an artificial joint.
Extraoral is the medical term meaning outside the mouth.
Arthralgia
Knee arthroscopy is the medical term meaning visual examination of the inside of the knee joint.
Tumor = oma Joint = arthro
Joint effusion
The lateral canthus is the medical term for the outside corner of the eye.
In medical terms, flexion means decreasing the angle of a joint.