Understanding HPGD Gene Hypertrophic Osteoarthropathy Type 1 Hypertrophic osteoarthropathy (HOA) is a medical condition characterized by the combination of clubbing (a deformity of the fingers and fingernails) and periostitis (swelling of the periosteal tissue around the bones) leading to joint pain and other symptoms. One genetic form of this condition, specifically Hypertrophic Osteoarthropathy Type 1, […]











