Table 1.

Experimental Protocol and Data Obtained Using the Robotic/UFS Testing System Under a 67-N Anterior Tibial Load Without (I–III.A) and With (I–III.B) 100 N Axial Compression

Protocol	Data Obtained
I. Intact joint
Path of passive flexion-extension
External loading conditions
A. 67-N anterior tibial load	Intact kinematics (I.A)
B. 67-N anterior tibial load + 100 N axial compression Transect ACL	Intact kinematics (I.B)
II. ACL-deficient joint
Repeat kinematics I.A, I.B	In-situ forces in the ACL
Apply loads I.A, I.B	ACL-deficient kinematics (II.A, II.B)
III. Mg ring repair of the ACL
Perform Mg ring repair
Apply loads I.A, I.B	Mg ring repair kinematics (III.A, III.B)
Release Mg ring
Repeat kinematics III.A, III.B	In-situ forces in Mg ring-repaired ACL
IV. Medial meniscus-deficient joint
Repeat kinematics I, II, III	In-situ forces in the medial meniscus