Fig. 3From: Effects of controlled abnormal joint movement on the molecular biological response in intra-articular tissues during the acute phase of anterior cruciate ligament injury in a rat modelHistological evaluation in each group. These figures show longitudinal sections of the anterior cruciate ligament (ACL) stained with hematoxylin and eosin: (a) ACL-T group at day 1; (b) ACL-T group at day 3; (c) ACL-T group at day 5; (d) CAM group at day 1; (e) CAM group at day 3; (f, i) CAM group at day 5; (g) IN group; (h) SO group. The ACL-T and CAM groups demonstrated cleavage of the ACL at each time point (a–f). However, the gap in the ligament stump in the CAM group became very small, and fibroblast proliferation was observed around the stump (d–f, i). ACL-T, ACL-transection; CAM, controlled abnormal movement; IN, intact; SO, sham operated. Scale bars = 1 mmBack to article page