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Table 2 Cyst parameters for study sample (n = 42), mean ± SD (median, range). Cysts were present in 88% of participants (37/42). Of the 37 participants with subchondral cysts, 33 had cysts medially and 18 had cysts laterally. For these reasons, in some cases the median value is 0. Cyst parameters specific to the 37 participants with subchondral cysts can be found in Additional file 3: Table S3

From: Knee osteoarthritis patients with more subchondral cysts have altered tibial subchondral bone mineral density

  Total Medial Lateral
Cyst Number (Cyst.N) (#) 7.0 ± 6.7 (5.5, 0–30) 3.9 ± 5.7 (2.0, 0–29) 1.9 ± 3.0 (0.0, 0–11)
Cyst #/vol (Cyst.N/TV) (#/cm3) 0.3 ± 0.3 (0.3, 0–1.3) 0.4 ± 0.6 (0.2, 0–2.6) 0.2 ± 0.3 (0.0, 0–1.3)
Cyst vol/vol (Cyst.V/TV) (%) 1.3 ± 2.7 (0.0, 0–14.8) 1.9 ± 2.5 (0.0, 0–24.5) 0.2 ± 0.5 (0.0, 0–5.3)
Total cyst volume (Tot.Cyst.V) (mm3) 133.5 ± 245.8 (44.3, 0–1253) 98.6 ± 232.3 (15.4, 0–1156) 16.5 ± 44.1 (0.0, 0–241.0)
Maximum cyst volume (Max.Cyst.V)(mm3) 70.4 ± 140.6 (21.9, 0–685.8) 58.0 ± 141.5 (7.7, 0–685.8) 9.5 ± 32.5 (0.0, 0–201.9)
Average cyst volume (Avg.Cyst.V) (mm3) 16.7 ± 25.8 (6.6, 0–139.2) 21.9 ± 49.9 (4.9, 0–289.1) 2.6 ± 4.5 (0.0, 0–21.9)