I’m a few weeks shy of 59 yrs old. The Xrays show age-related wear in the ankle. Ultrasounds show Tenosynovitis, which is the inflammation of the fluid-filled sheath (called the synovium) that surrounds a tendon, typically leading to joint pain, swelling, and stiffness. The affected tendon is the posterior tibial one. If pain persists, I’ll get a cortisone injection under ultrasound direction into the affected area.