An open-configuration MRI study of femoro-acetabular impingement and subluxation in extreme leg positions. - Mitsuyoshi Yamamura; Nobuhiko Sugano; Hidenobu Miki; Hironobu Nakamura; Akihiro Kakimoto; T. Hananouchi; Takashi Nishii; Hideki Yoshikawa (CARS, 2004)