Olsson, S. S., Jernberger, A., & Tryggö, D. (1981). Clinical and Radiological Long-Term Results After Charnley-müller Total Hip Replacement: A 5 to 10 Year Follow-up Study with Special Reference to Aseptic Loosening. Acta Orthopaedica, 52(5), 531–542. https://doi.org/10.3109/17453678108992143