I know quite a lot about tendon lengthening..
i work with children who have CP.
First of all, I would like for you to try to avoid surgery.
Its invasive, takes a long time to heal, then the tendon will get shorter again with time..However in some very severe spastic cases you can't avoid it. (Surgery is usually can be considered after the age of 10-12)
Try to use botox, for easing the spasticity, and targetting the spastic,shorter tendons, and muscles.Its a shot, lasts for 3 months, then wears off (if you see improvements you can repeat it, if not, no harm has been done)
Active every day stretching will give you slow but nice result. I use sage lotion with my kiddos, as sage is a natural muscle relaxant. Or you can also make a sage bath (almost like making a sage herb tea in the tub) try to make it as hot as the child can tolerate, try to move his limbs and do stretching while in the tub, then do it again out of the tub. (if you let me know where you have this spasticity, i can give you good stretching excercises)
There are two other ways to ease spasticity, but they are invasive. Baclofen pill/ or pump and Selective Dhorsal Rhizotomy. (SDR is irreversible!!!they cut nerves in the spine, personally I'm against it)
Also, proper splinths, footwear, AFO, DAFO, arm gaiters will stretch the tendons, and prevent contractures in the joints.
To answer your question about CP, cp can happen pre natal, post natal, and at birth. Its always a brain injury, due to hemorrage in the brain, lack of oxygen.anything that causes lack of oxygen (i.e cord around neck) can potentially cause CP.
However cp cannot really be diagnosed till parents/neurologist can se the delays in the developmental motor milestones.usually they get suspicious when the baby is around 6-8 months.
Its very hard to predict how these injuries will affect the child, therefore doctors have hard times labelling the kids with CP. Cp has very many types, renging from mild to severe, and sometimes there are mixed types.
Try to do lots of therapies (I know OT and PT often offers only 2x45 minutes a week)
Try to research Conductive-education, and if you have a center near to you. Its a combined therapy method, and offers 5-6 hours a DAY!
Consistency is the key for improvements in individuals with CP, and everyday stretching!!
If you have any more specific questions, please e-mail me to
I'll be more than happy to answer them.
I hope i helped,