Hip Arthritis Stiffness and Groin Ache

"Hip arthritis" and "groin ache" can land on the same note, and they are not the same kind of word. One names a condition. The other names a place where something is felt.
Treat them as two entries, not one. Start with the term that carries a definition.
What hip arthritis means
Cleveland Clinic says hip arthritis is pain and stiffness in your hip joint, related to the soft tissues in the joint. It adds that arthritis usually affects the cartilage that cushions your joint, and sometimes the synovial membrane that lubricates it. For wider context on the family of conditions, the CDC overview of osteoarthritis is a public page to keep open.
What the term does not tell you
A definition lists the tissues involved. It does not say which tissue is affected in your hip, or how that will change. Those answers sit with a clinician who has seen your scan.
The question to bring
Ask: "Which words in my report refer to the hip joint itself, and which refer to where I feel it?" Readers in East Rutherford and the Meadowlands can write that question on the report. The OrthoInfo page on osteoarthritis offers a second definition to compare.