Hi and welcome,
To be honest, if you haven't had your neuro assess the issue yet, it's possible for your online research and what you experience fitting both extensor and flexor spasticity descriptions, it's possible for it not to be spasticity but something else or even a combination of things.....so i'd advice you to wait until you definitely know exactly what your dealing with.
According to the national Multiple Sclerosis Society
"Spasticity refers to feelings of stiffness and a wide range of involuntary muscle spasms (sustained muscle contractions or sudden movements). It is one of the more common symptoms of MS.
Spasticity may be as mild as the feeling of tightness of muscles or may be so severe as to produce painful, uncontrollable spasms of extremities, usually of the legs. Spasticity may also produce feelings of pain or tightness in and around joints, and can cause low back pain. Although spasticity can occur in any limb, it is much more common in the legs.
In flexor spasticity, mostly involving the hamstrings (muscles on the back of the upper leg), and hip flexors (muscles at the top of the upper thigh), the hips and knees are bent and difficult to straighten.
In extensor spasticity, involving the quadriceps and adductors (muscles on the front and inside of the upper leg), the hips and knees remain straight with the legs very close together or crossed over at the ankles."
http://www.nationalmssociety.org/Symptoms-Diagnosis/MS-Symptoms/Spasticity
Theoretically, i can't see why you couldn't have both, although i don't recall anyone here specifically mentioning that they do, but it would have to still be possible with a neurological condition like MS...
Hope that helps........JJ
[this is my second attempt to post this, so may come up twice]
Hi, I am not sure if getting both in the same limb can happen or not. When I was struggling with bicep spasticity my OT told me that because my bicep was contracted so much of the time that it would negatively impact (weaken) my tricep.
I would be interested to know what your neuro thinks.
Good luck and keep us posted,
Corrie