Fig. 2From: Retrospective cohort study on radial head arthroplasty comparing long-term outcomes between valgus type injury and fracture dislocationMeasurement of periprosthetic radiolucency on anteroposterior view (X-ap) by 3 red lines on radiographs. H red line: width of radial head component on radiographs. S red line: width of stem on radiographs. R red line: maximal width of radiolucency on radiographs. RS: real size in head component of the prosthesisBack to article page