Ancient berry powder tested to speed up knee surgery healing

This study is testing whether a daily drink made from freeze-dried Rosa roxburghii (a type of fruit) juice powder can help people recover better after knee replacement surgery for osteoarthritis. About 184 patients who have just had surgery will take either the fruit powder or a placebo (inactive substance) daily for 30 days. Researchers will check if the powder reduces inflammation, lowers oxidative stress, and helps improve knee function and pain scores during recovery.