recoverying dendrobium question

[OhioBob]

I know the old canes are very much alive and supporting the new growth. I also have them staked to help keep them from pulling out of the pot but it really takes very little movement of the old canes to see the media move a lot. Movement of less than a 1/2 inch (1.5 cm) of the cane tip causes a lot of movement in the media- to the point the roots are pulling up. And if the new growth needs to grow 4-5 inches that will add added strain to the roots. I like the idea of the rhizome clip. I have seen them and probably could fashion one with little trouble.

Thanks for the information.