what causes strained hip flexor
Hip Flexor Strain. A hip flexor strain causes pain at the front of the hip. The hip flexors are a group of muscles which work to lift the thigh upwards. They also assist in lifting the trunk when in a laying position.The two main muscles in this group are the Iliopsoas and the Rectus Femoris.ymptoms of a Hip Flexor Strain. 1  Pain at the front of the hip. 2  Pain develops suddenly. 3  Pain is made worse by raising the thigh against resistance. 4  Stretching these muscles may causes pain. 5  It may be tender to touch the area at the front of the hip, although Iliopsoas is very deep so difficult to feel.