Best pain for patients after artificial joint surgery

(1)Surgery to turn the knee into an artificial joint, which suffers from inflammation
(2)Rehabilitation training through the machine should be done hard so that the knee can bend easily
(3)But there’s a limit to the angle that the machine can bend
(4)The doctors come to pick me up from time to time
(5)the doctor just bent his knee
(6)I can hear the patients singing and crying
(7)It hurts the most to break the patients’ surgery because it’s nothing
(8)It’s all up
(9)Rehabilitation is scary