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Fig. 3 | Knee Surgery & Related Research

Fig. 3

From: Differences in preoperative planning for high-tibial osteotomy between the standing and supine positions

Fig. 3

An example of preoperative planning for open-wedge high-tibial osteotomy. a Planning on a standing radiograph setting 62% as the target alignment. The estimated correction angle was 7.7°. b Planning on a supine radiograph. The estimated correction angle was 5.3°. c A virtual weight-bearing line (vWBL) was drawn by applying the correction angle (7.7°) determined on the standing radiograph to the supine radiograph. d The virtual %WBL (v%WBL) was 69%. The %WBL discrepancy (%WBLd) was calculated as 69–62 = 7 (%)

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