Do Diclofenac 100mg per day (1st day X3) Impair bone fracture healing? My clavicle fracture not healed after 10days&indicated for surgery. Stop?

Maybe. It may interfere worth bone healing. Keep in mind, it usually takes about 6 weeks the fracture heal. Would be better to stop the medication and take vitamin D 5000 units daily for 6 weeks to help the bone healing. If the bone is not well aligned, you may need surgery.
It should not. inhibit healing bones take up to 6 weeks to mend it may be too movable for clavicle to heal and yes surgery may be needed.