My left buttock is a continuing source of discomfort.  There isnt an open sore but skin at times is very red.  Im 79 and underweight with a crooked spine and have had two back operations...at age 50 and 65.  Adding to my discomfort is a rapidly increasing inability to walk only short distances without intense back pain.  I want to remain active but it is increasingly difficult to do.  Any advice will be appreciated.  Thanks very much.
As a conservative management I suggest to use cold pack on your painful area as well consult the physio for regular back strengthening exercise which can improve the strength and stamina of spinal muscles. If this does not help then I suggest you need to take MRI of lumbar spine and check with orthopedic doctor for the treatment plan. Here if the problem is serious then he may suggest for surgical correction and if report is not showing so much of issue then or tho doctor will suggest you for few medication and physiotherapy treatment. Here I recommend going ahead with physiotherapy treatment, and it will help to reduce your soreness in skin and buttock area as well it will relax soft tissue and will have healing effect on soft tissue with increase blood circulation. Which will help you further. As per your age I also recommend you to take regular vitaminen D and calcium tablet from good natural supplement brand to support bone health. Take care.