Postoperative pain after total knee replacement Osteoarthritis, Knee Arthroplasty, Replacement, Knee Pain, Postoperative Cold Packs Thermoelectric Devices
Conditions
Interventions
Patients in the experimental group receive standard postoperative pain management, including routine analgesic medications, plus thermoelectric ice pack application to the operated knee. The device is
Experimental Device,Active Comparator Device
Thermoelectric ice pack,Conventional gel cold pack
Sponsors
Mahidol university
Eligibility
Sex/Gender
All
Age
40 Years to 90 Years
Inclusion criteria
Inclusion criteria: 1. Male or female patients diagnosed with primary knee osteoarthritis and scheduled for unilateral or bilateral total knee replacement surgery. 2. Able to communicate in Thai (speaking, reading, and writing). 3. For patients aged 60 years and older, Mini-Cog score greater than 3.
Exclusion criteria
Exclusion criteria: 1. Patients receiving analgesic drugs for other chronic pain conditions unrelated to knee osteoarthritis (e.g., cancer pain, radicular pain from herniated disc). 2. Patients transferred to an intensive care unit after surgery or who die during study participation. 3. Patients undergoing knee surgery due to trauma or malignant disease. 4. Patients with knee deformity greater than 20 degrees. 5. Patients with revision surgery of the same knee. 6. Patients with a history of rheumatoid arthritis. 7. Patients with a history of allergy to cold packs or materials used in the packs. 8. Patients with infection at the surgical site. 9. Patients with abnormal peripheral circulation (e.g., peripheral arterial or deep venous occlusive disease, vasculitis). 10. Patients diagnosed with psychiatric disorders such as schizophrenia, acute bipolar disorder, or severe major depressive disorder.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Postoperative pain intensity (NRS) Preoperative, immediately postoperative, 6, 24, 48, 72 Numeric Rating Scale (0-10), patient-reported score | — |
Secondary
| Measure | Time frame |
|---|---|
| Time to First Ambulation After Total Knee Arthroplasty From end of surgery until first ambulation Time (hours) from end of surgery to first ambulation, recorded by nursing staff using patient medical records | — |
Countries
Thailand
Contacts
Public ContactChonnikan Sratongin
Kamphaeng Saen Hospital and Faculty of Nursing, Mahidol University
Outcome results
None listed