"concentric narrowing ("
"There is no definite causative factor identified in idiopathic chondrolysis of the hip, which is different from chondrolysis of the hip joint that occurs secondary to inciting events such as trauma, inflammatory arthropathy, or slipped capital femoral epiphysis 2."
"There is no standardised treatment regimen for idiopathic chondrolysis of the hip. Treatment may be conservative or surgical. Outcomes are variable and ranging from complete resolution of symptoms to a permanently destroyed and ankylosed hip joint 2."