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Here are a few commonly found causes of pain in upper part of the thigh: Hamstring Injury: One of the major causes behind upper thigh pain is hamstring injury and the resultant muscle pain is felt at the back side of the thigh. The hamstring muscle is a vital thigh muscle which starts from buttock and ends at the back of the knee.
A stress fracture to the femur, pulled muscle and muscle strain, sciatic nerve and bursitis are all possible causes of thigh pain. Sciatica is a common source of lower back pain that can be felt down the back of the leg.The pain can be sharp and intense or a constant throbbing sensation.mage by Deborah Benbrook from Fotolia.com. Throbbing thigh pain can emerge from the knee, hip or back. The origin of the problem could be related to the muscles, bones or nerves in the legs. Throbbing can be dull or so severe that a person may find it difficult to stand or walk.