There are not many Cartridges using Organic Substances for a Armature.
The is the Bamboo used in the Madake, which is the species of Bamboo used for the Armature.
There is also Cacti Needles used.
I have sent a White Paper about the Cell structure in Cacti Needles to a Cartridge Builder who uses their own 8 Years Stored Needles.
There is a density to the Cacti Needle and Cell structure that is creating a denser wood, than a common wood cell structure.
I have not seen a Bamboo Armature on anything other than a Wood Body.
Cacti Needles are found on Bodies of various materials.
I really Like the Miyajima Sonic, that is being produced in the system it belongs to. I regularly get the opportunity to hear in use, one of the Brands Models produced with a Wood Body,
One of my upcoming Cart' Rebuilds (my Post COVID Adventure) is to have a Cacti Needle Armature used, along with a few other not too usual ideas incorporated.
I can't help but feel there are other individuals who may be more than capable to take in your damaged Cart' to evaluate it as a Candidate as a refurbishment.
I helped somebody not too many years past get their non-working Transfiguration Proteus receive a new lease of usage life.
The owners follow up report was that it was better when returned that any recollections of the usage prior to the damage ocurring.