Table 2.

Patient demographics

Number of patients	12.614
Median age in years, (range)	44.55 (13–100)
Female, n (%)	5.963 (53.2)
Male, n (%)	5.231 (46.7)
PMF classification according to fracture size
Number of patients	8.506
Median age in years, (range)	46.67 (13–100)
Female, n (%)	4.035 (52.6)
Male, n (%)	3.624 (47.3)
Fracture ≥ 25% of joint surface	1.095
Fractrure < 25% of joint surface	1.579
Other cut-off value used for fracture	1.117
Fracture cut-off value not stated	2.199
Haraguchi classification
Number of patients	3.790
Median age in years (range)	46.8 (13–100)
Female, n (%)	1.699 (52.9)
Male, n (%)	1.508 (47.0)
HC Type I	1.525
HC Type II	910
HC Type III	318
Bartonicek/Rammelt classification
Number of patients	2.497
Median age in years (range)	47.0 (14–90)
Female, n (%)	1.282 (55.6)
Male, n (%)	1.022 (44.3)
BRC type 1	145
BRC type 2	917
BRC type 3	458
BRC type 4	348
BRC type 5	7
Mason classification
Number of patients	1.164
Median age in years (range)	48.55 (17–90)
Female, n (%)	479 (59.5)
Male, n (%)	326 (40.4)
MC type 1	149
MC type 2A	248
MC type 2B	263
MC type 3	124

HC Haraguchi classification, BRC Bartonicek/Rammelt classification, MC Mason classification