Article Figures & Data
Figures
- FIGURE 1.
Scintigraphic stages of Conway classification of LCP. Stage I (total avascularity of proximal femoral epiphysis) is observed at initial stage of disease. Appearance of lateral column formation (a) characterizes A pathway (stages IIA and IIIA). In B pathway, as neovascularization progresses, extension of activity from metaphysis is observed (stages IIB and IIIB), without lateral column formation (b).
- FIGURE 2.
Hyperactivity (arrow) of left metaphyseal growth plates compared with other hip, which appears normal.
Tables
Stage Pathway A Pathway B I No radioactivity No radioactivity II Appearance of lateral column formation Appearance of activity from base of epiphysis III Extension of lateral column formation activity Extension of activity to capital femoral epiphysis IV Extension of lateral column formation activity to whole epiphysis Extension of activity to whole epiphysis Patient no. Sex Age at diagnosis (y) Time from initial symptoms to staging (mo) Stage Presence of severity signs at MRI Arthrography 1 M 6.2 6 III Yes —* 2 F 5.9 6 III Yes — 3 M 8.7 8 III Yes — 4 M 7.6 8 III Yes Yes 5 M 7.0 8 III Yes Yes 6 M 9.1 5 III Yes Yes 7 M 9.5 6 III Yes Yes 8 M 6.6 7 III Yes Yes 9 M 5.5 7 III Yes Yes 10 M 5.9 4 III No — 11 M 6.4 5 III No — 12 M 4.1 5 III No — 13 F 6.8 7 III No — 14 M 8.4 7 III No — 15 M 7.5 6 III No — 16 M 6.2 8 III No — 17 M 3.4 8 III No — 18 M 6.4 7 IV Yes — 19 M 8.4 6 IV Yes — 20 M 5.1 7 IV Yes — 21 M 8.9 7 IV Yes — 22 M 5.6 7 IV Yes — 23 M 4.2 6 IV Yes — 24 M 4.2 8 IV Yes — 25 F 10.7 7 IV Yes — 26 M 7.4 6 IV Yes — 27 M 3.8 7 IV — Yes 28 M 7.3 9 IV Yes Yes 29 M 3.5 8 IV Yes Yes 30 M 7.7 6 IV Yes Yes 31 M 6.0 8 IV Yes Yes 32 M 4.1 8 IV Yes Yes 33 M 4.5 8 IV Yes Yes 34 M 4.1 8 IV — Yes 35 M 6.4 5 IV Yes Yes 36 M 4.5 10 IV Yes Yes 37 M 6.0 8 IV Yes Yes 38 M 6.0 7 IV Yes Yes 39 M 7.2 7 IV Yes Yes 40 M 7.2 6 IV Yes Yes 41 F 9.9 9 IV Yes Yes 42 M 4.0 5 IV Yes Yes 43 F 4.4 7 IV Yes Yes 44 M 8.1 7 IV Yes Yes ↵* Not determined.
Disease severity Pathway A Pathway B Good final outcome 23 1 Poor final outcome 4 31
