Table 2.
Summary of the literature on rates of intraspinal anomalies in early onset idiopathic scoliosis (EOIS) subdivided into infantile idiopathic scoliosis (IIS) and juvenile idiopathic scoliosis (JIS)
| Study | Location | Patients | Intraspinal anomalies | ||||
|---|---|---|---|---|---|---|---|
| IIS | JIS | EOIS | IIS | JIS | EOIS | ||
| Nakahara et al. [7] | Japan | N/A | 53 | N/A | 7 (13 %) | ||
| Rajasekaran et al. [17] | India | 4 | 11 | 15 | 1 (25 %) | 3 (27 %) | 4 (27 %) |
| Pahys et al. [6] | USA | 54 | – | 7 (13 %) | – | ||
| Inoue et al. [2] | Japan | 2 | 72 | 74 | N/A | 19 (26 %) | |
| Dobbs et al. [5] | USA | 46 | – | 10 (22 %) | – | ||
| Gupta et al. [1] | USA | 6 | 92 | 98 | 3 (50 %) | N/A | 19 (19 %) |
| Evans et al. [3] | UK | – | 31 | – | 8 (26 %) | ||
| Lewonowski et al. [4] | USA | 4 | 22 | 26 | 2 (50 %) | 3 (14 %) | 5 (19 %) |