Femur - The largest bone in the body, extending from the hip to the knee (thigh bone).
 
Fixation - The act or operation of holding, suturing or fastening in a fixed position. The condition of being held in a fixed position.
 
Flex - To bend.
 
Fracture - A break or rupture in the bone.
 
Frozen Shoulder - This disorder results from any conditions that enforce prolonged immobility of the shoulder joint. There is marked restriction of range of motion. Physical therapy and corticosteroid injections may be helpful in some cases. Surgery will be required for more advanced cases.