Comparison of Growth Hormone treatment with Lateral Synovial Joint Loading Histology

Under epiphyseal distraction(the method that involved gradually lengthening the epiphysis so as to not cause fracture), we see a much less dense growth plate but we see a much greater blue line(hyaline cartilage growth plate line).  The distraction is not perfect as there is some ossification within the hyaline cartilage.  What's important to note is that even though the white stem cells in the blue line are much less organized than under normal endochondral ossification they are still able to undergo it.  Here is the relevant image:
Now under LSJL(right click and click view image to see whole slide), we saw tiny dots in white(top middle) almost floating down into the growth plate(possible signs of stem cell recruitment).  In contrast to epiphyseal distraction, the hypertrophic zone is denser than normal under LSJL where epiphyseal distraction decreases density in all areas.  So Lateral Joint Loading has an effect beyond a stretching of the growth plate.

The study containing the slides of the growth plates under GH can be found here on page 4.  The study is password protected so I was not able to copy the slides.    On slide A you can see at the top of the growth plate there is a thin blue line that is the same texture as the hyaline cartilage outside the bone.  Since the external blue cartilage remains as articular cartilage it is logical that the blue line of hyaline resting zone cartilage remains.  Comparing slides C and D, the growth plate is much larger.  In contrast to epiphyseal distraction, the resting thick blue hyaline cartilage growth plate line is not bigger.  Under HGH, in contrast to LSJL, the bone quality below doesn't change.  Under LSJL the bone below looking more like compact bone must be due to other factors than increasing growth rate.  Otherwise the bone under LSJL is very similar to bone under HGH.