Evaluation of accuracy of plain radiography in determining the Risser stage and identification of common sources of errors

Table 2 Analysis of concordance between radiograph and computed tomography according to Risser's stage determined using the French method

Stage determined by CT	Stage determined by plain radiography
Stage	0	1	2	3	4	5	Total
0	11	1	0	0	0	0	12
1	3	2	1	0	0	0	6
2	0	1	6	0	2	0	9
3	0	1	2	17	10	0	30
4	0	0	0	4	9	0	13
5	0	0	0	0	4	15	19
Total	14	5	9	21	25	15	89
Concordance rate	78.57%	40.00%	66.67%	80.95%	36.00%	100.00%	67.42%

The distribution of different types of error using FM was as follows: miscalculation of excursion (n = 4), skip ossification (n = 3), isolated non-linear ossification (n = 2), micro-fusion (n = 8), pseudo-fusion (n = 10), and gas shadow (n = 2). The results of the statistical analyses revealed a significant difference between stages (p = 0.0001), with stages 1, 2, and 4 exhibiting a lower rate of concordance (<70%). The mean concordance rate between PR and 3D-CT for assessing Risser's staging was 59.76% for OM and 67.42% for FM.
CT computed tomography, % percentage.

ISSN: 1749-799X