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. 2011 Nov 19;470(9):2394–2401. doi: 10.1007/s11999-011-2181-7

Table 4.

Radiographic femoral head sphericity (modified Stulberg classification) at followup according to treatment methods in children older than 6.0 years with Lateral Pillar Group C hips

Age (years) Treatment Study Number of patients Femoral head sphericity (% of hips)
Spherical head Ovoid head Flat head
6.0–7.9 Nonoperative Herring et al. [7] (2004) 30 10 67 23
6.0–7.9 Nonoperative Current study 9 0 11 89
6.0–7.9 Operative Herring et al. [7] (2004) 11 36 55 9
6.0–7.9 Operative Current study 25 28 48 24
< 9.0 Operative Friedlander and Weiner [5] (2000) 40 43 47 10
< 9.0 Operative Aksoy et al. [1] (2005) 14 43 43 14
> 8.0 Nonoperative Herring et al. [7] (2004) 14 7 29 64
8.0–9.9 Nonoperative Current study 9 0 33 67
> 8.0 Operative Herring et al. [7] (2004) 5 0 20 80
8.0–9.9 Operative Current study 5 0 80 20
> 9.0 Operative Friedlander and Weiner [5] (2000) 28 32 50 18
> 9.0 Operative Aksoy et al. [1] (2005) 12 0 67 33