Fig. 1From: Effect of bisphosphonates on periprosthetic bone loss after total knee arthroplasty: a meta-analysis of randomized controlled trialsPeriprosthetic ROIs of knee. a periprosthetic ROIs of tibia: medial metaphyseal region (R1), diaphyseal region (R2), lateral metaphyseal region (R3), (b) periprosthetic ROIs of femur: anterior metaphyseal region (R4), central metaphyseal region (R5), posterior metaphyseal region (R6)Back to article page