When the lumbar region is over-rotated or the thighs are over-extended and abducted, it is easy to cause a pulling injury to one side of the psoas major muscle, resulting in congestion, swelling and spasm of the psoas major muscle, which can cause lumbago, abdominal pain, inguinal and perineal cramps, and anterior and medial thigh cramps when the nerves are embedded. It is important to pay attention to the differential diagnosis in clinical practice. 1.High lumbar disc herniation can cause inguinal or anterior medial thigh pain in the corresponding nerve distribution area due to the involvement of L1~L3 nerve roots, but mechanical factors (compression, deformity) and chemical factors (immunity and inflammation) stimulating the nerve roots are the main causes of pain. Therefore, the pain of L1~L3 nerve root is not relieved or intensified by flexing the knee and hip in the affected lumbar region and the affected lower extremity after being compressed by GAN. 2, femoral adductor muscle injury femoral adductor muscle mainly includes thin femoral muscle, pubococcygeus muscle, short adductor muscle, long adductor muscle, large adductor muscle, during which there is also a closed nerve, the length of muscle fibers are not the same thickness, easy to cause excessive strain and cause injury. The symptoms are: pain in the medial femoral root of the affected limb, limited function, and significant pain in the lower limb during adduction, abduction, and external rotation. Severe cases can affect walking and other activities, local soft tissues can have swelling and obvious pressure pain, hip joint inversion, resistance test is positive. In contrast, there is no swelling of the local soft tissues of the psoas major muscle injury, and the inversion resistance test is negative.
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