Thanks for getting in touch! I think my colleagues have given you excellent answers, and there is plenty to work off at present.
When I read about your dad’s case, there are some things that come to mind.
Firstly, how long ago did he injure (if indeed he did) his knee? If it’s not in the too distant past, then most polyclinic doctors should be able to access the scan report (via the national electronic health database) and advise you on the nature of the injury. This in turn may prompt you both to take up a particular course of treatment.
Also, there may be some mileage in seeking an opinion from an independent physiotherapist who might be able to give some straight forward exercises.
Equally, I often refer patients with chronic, grumbling knee pain to our in house TCM acupuncturist – it’s not for everyone but if it helps then I believe it’s an option.
Other options include ultrasound therapy, over-the-counter medication as needed and finally looking at alternative sports.
Cycling and swimming are great ways of keeping fit. If your dad has a competitive side, he might even sign up to a duathalon or triathalon.
Overall, I think there is lots that can be done with knee pain now, and it really depends on what his aims are.