Hi, Thanks for your query. Pain in the thigh can be referred from the spine, the hip joint or from the bone and muscle in the thigh itself. A physical examination would indicate to a physician the likely site of the pain which could be further investigated with X-rays of your spine, hip and femur. The nature of your pain suggests to me that this is more likely a hip joint or thigh muscle problem. If the pain is coming from your hip joint the most common diagnosis at your age would be osteoarthritis of the hip joint. A strain of the quadriceps muscle can also cause such pain, which will likely improve over a period of 2-3 weeks. I do hope that you have found something helpful and I will be glad to answer any further query. Take care