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. Author manuscript; available in PMC: 2014 Sep 18.
Published in final edited form as: Knee Surg Sports Traumatol Arthrosc. 2010 Dec 11;19(4):653–662. doi: 10.1007/s00167-010-1327-6

Fig. 3.

Fig. 3

Representative bone geometry model derived from the CT scan depicting coordinate axes used to define the reference position of the tibia and femur: medial–lateral (ML), superior–inferior (SI), and anterior–posterior (AP)