Overuse or excessive pressure around the hip muscles may result in inflammation and pain. This may result from routines like operating or leaping. Arthritis: Osteoarthritis and rheumatoid arthritis are two widespread varieties of arthritis that can affect the hip joint. These situations cause inflammation, pain, and stiffness in the hip. https://www.theorthopaedicandpainpractice.com/is-my-groin-pain-caused-by-hip-osteoarthritis/