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Table 1 Descriptive statistics for all operated (ACLX) knees containing subchondral bone cysts (SBC) (Number = 8)

From: An in vivoinvestigation of the initiation and progression of subchondral cysts in a rodent model of secondary osteoarthritis

Time post-ACLX CT diameter (mm) MRI diameter (mm) vBMD (mg/cc) OARSI grade
Presurgical    770 ± 19  
4 weeks 0.626 ± 0.126 0.656 ± 0.0781 680 ± 52  
8 weeks 0.922 ± 0.111 0.827 ± 0.105 610 ± 37*  
12 weeks 1.14 ± 0.0923* 1.07 ± 0.0809* 690 ± 57 18 ± 0.82
2.9 ± 0.58
  1. Values are mean ± standard error from the measured SBC diameter and superficial volumetric bone mineral density (vBMD) occurring over time. OA grade (OARSI), acquired from the histological analysis, is provided for the final time point only and presented versus the contralateral limb score underneath. *vBMD = P < 0.05 versus presurgical, *diameter = P < 0.05 versus 4 weeks. ACLX, anterior cruciate ligament transection with partial medial meniscectomy; CT, computed tomography; MRI, magnetic resonance imaging; OARSI, Osteoarthritis Research Society International.