Knee A to Z

Hip external rotation is a hip exercise relevant to knee rehabilitation.

Hip external rotation and abduction are hip exercises that are relevant in knee rehabilitation.

Hip flexion and adduction are range of motion exercises of the hip that are relevant to knee rehabilitation.

Hip flexions are knee rehabilitation exercises to improve range of motion of the knee.

HIV is an abbreviation of the term 'human immunodeficiency virus'.

HO is an abbreviation of 'heterotopic ossification', where bone forms where it should not form, usually in the soft tissues.

Hoffa fracture is a type of break in the femur bone (thighbone) the rounded condyle at the lower end, in the coronal plane and extending into the joint space.

Hoffa's disease is a disorder of the infrapatellar fat pad.

Hoffa's sign is pain and distress when straightening the bent knee while an examiner presses deeply with the thumbs on either side of the patellar tendon. Page updated July 2023 by Dr Sheila Strover (Clinical Editor)

Hoffa's syndrome is pain in the front of the knee associated with irritation or scarring of the infrapatellar fat pad (Hoffa fat pad).