According to Better Medicine, thigh pain is commonly caused by normal growth, muscle strain, physical activity, injury, contusion and age-related wear or tear on the hips and knees. In some cases, it is caused by serious conditions, such as hip dislocation, bone fracture and deep vein thrombosis.
The Sports Injury Clinic explains that thigh pain is classified into front thigh pain and back thigh pain. Common causes of front thigh pain include quadriceps contusion, quadriceps muscle strain, myositis ossificans and groin strain. Other causes are stress fracture of the femur, referred pain and rectus femoris avulsion fracture. Common causes of posterior thigh pain include hamstring strain, hamstring contusion, gluteal trigger points and referred pain from the lumbar spine, while less common causes include hamstring tendinitis and biceps femoris avulsion fracture. Additionally, the Sports Injury Clinic notes that vascular problems that involve restricted blood supply cause pain in the back of the thigh.
According to MedGuidance, a general ache or stabbing pain in the inner thigh results from strained muscle due to intense exercise and health conditions, such as groin hernia, kidney stones, osteoarthritis, pubis dysfunction and osteosarcoma. Septic arthritis, edema, lipoma, sciatica, septic arthritis and side effects of surgery are also possible causes of inner thigh pain.