To evaluate the influence of rapid recovery on sleep quality following total hip replacement surgery

Inclusion Criteria:

• 1. Primary unilateral total hip arthroplasty;
• 2. Patients with hip osteoarthritis,rheumatoid arthritis or femoral head necrosis;
• 3. Able and willing to provide signed informed consent.

Exclusion Criteria:

• 1. Simultaneously bilateral total hip arthroplasty or revision case;
• 2. Surgical History of the hip joint;
• 3. Hip joint cavity paracentesis in recent 3 months;
• 4. Stiffness with hip;
• 5. Blood coagulation disorders;
• 6. History of deep venous thrombosis;
• 7. Concomitant medical problems such as uncontrolled hypertension, 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. Unable to comply with polysomnographic measurement