The purpose of this study is to evaluate the influence of rapid recovery on sleep quality following total knee replacement surgery.

Inclusion Criteria:

1. Primary unilateral total knee artropasty;
2. Patients with Knee osteoartritis or Rheumatoid arthritis;
3. Able and willing to provide signed informed consent.

Exclusion Criteria:

1. Simultaneously bilateral total knee artropasty or revision case;
2. Surgical History of the knee joint;
3. Knee joint cavity paracentesis in recent 3 months;
4. Stiffness with knee;
5. Blood coagulation disorders;
6. History of deep venous thrombosis;
7. Concomitant medical problems such as uncontrolled hypertention, severe cardiovascular disorder, chronic obstructive pulmonary disease, liver or renal failure
8. allergic to NSAIDs, opioid analgesics, zolpidem
9. sleep apnea, Parkinson disease, dementia, depression
10. use of sedatives or hypnotics
11. inability to comply with polysomnographic measurement

Chinese