Fig. 1From: Clinical application of modified Crain classification in the Design of Anterior Cruciate Ligament Reconstruction with remnant preservationModified Crain classification of remnant ligament tissue. A: Groups Ia anterior cruciate ligament (ACL) remnant; B: Group Ib ACL remnant; C: Group Ic ACL remnant; D: Group IIa ACL remnant; E: Group IIb ACL remnant; F: Group IIc ACL remnant; G: Group IId ACL remnantBack to article page