Iloprost therapy achieves good clinical and radiological short and mid-term outcomes in patients with idiopathic aseptic osteonecrosis of the knee joint also in ARCO level II. - Kirschbaum S; Perka C; El-Kayali M; Gwinner C; Walter-Rittel TC; Soujon M; Donner S (Archives of orthopaedic and trauma surgery, 2025)