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. Author manuscript; available in PMC: 2013 Aug 12.
Published in final edited form as: Am J Sports Med. 2008 Jul 14;36(11):2151–2157. doi: 10.1177/0363546508319051

Figure 4.

Figure 4

Internal-external rotation of the tibia relative to the femur in subjects with bilateral healthy knees (normal) and patients with contralateral ACL (ACL def. contral.) and PCL (PCL def. contral.) deficiency. Kinematics were analyzed using the transepicondylar femoral axis-based (top) and geometric center axis-based (bottom) coordinate systems. Positive values denote an internal tibial rotation, while negative values represent an external tibial rotation. No significant differences between the groups were detected at all flexion angles (P > .95).