@article{loudon_charnley_1980, 
  title={Subsidence of the femoral prosthesis in total hip replacement in relation to the design of the stem}, 
  volume={62-B}, 
  DOI={10.1302/0301-620x.62b4.7430222}, 
  publisher={British Editorial Society of Bone & Joint Surgery}, 
  author={Loudon and Charnley}, 
  year={1980}
  }