Hi, thanks for writing to HCM.
Your knee pain
and the foot issues are no way interrelated.
Propably the reason for awkward running or walking could be related to the malunion
(not united in correct position) of the metatarsal fractures
which will change the biomechanics of foot leading to a altered gait.
However, a further detailed examination is necessary to rule out other causes of altered gait.
Hope this information is helpful. Good day