Hip flexor strain, osteoarthritis and bursitis are some non-injury conditions that result in hip pain, according to the National Institutes of Health. A few non-injury ailments that can cause leg pain are deep vein thrombosis and Baker’s cyst, according to Mayo Clinic.
Hip flexor strain occurs when the hip flexor muscles experience wear and tear. Stiff and weak muscles weaken the hip flexors that make it difficult to bend at the hip easily. The pain can be mild to severe with occasional spasms or swelling, notes the National Institutes of Health.
Osteoarthritis can occur due to old age or obesity. It is the most common disorder in elderly people over 50 years of age and can also occur because of heredity. Swelling, pain and stiffness in the joints are the typical symptoms. Bursitis in the hip is characterized by acute hip pain when climbing stairs or walking, states the National Institutes of Health.
Blood clots in the deep veins of legs cause deep vein thrombosis, according to the Mayo Clinic. This is usually accompanied by swelling and leg pain. It can become dangerous if the clots travel from the legs to the lungs and block the flow of blood. Baker’s cyst develops behind the knee. It is a fluid-filled cyst that causes leg pain and makes it difficult to bend or extend the knee.