Endo, J., Yamaguchi, S., Saito, M., Itabashi, T., Kita, K., Koizumi, W., Kawaguchi, Y., Asaka, T., Saegusa, O. Efficacy of preoperative skin traction for hip fractures: a single-institution prospective randomized controlled trial of skin traction versus no traction. Journal of Orthopaedic Science 2013; 2: 250-5