Wu, Chi-Chuan, and Chun-Hsiung Shih. “Interlocking Nailing of Distal Femoral Fractures: 28 Patients Followed for 1–2 Years”. Acta Orthopaedica, vol. 62, no. 4, Jan. 1991, pp. 342-5, doi:10.3109/17453679108994466.