In addition to the previous posts I suggest also looking peripehrally. In 25 years I encountered 1 superior glide fixation of the fibula and restoring inferior glide reduced the peroneal numbness. Sometimes there is concomitant trauma that is not consciously recorded such as pushing very hard on the brake pedal at the point of impact with MVA, etc.
I always interpret dermatomes and sensory nerves very cautiously, there is so much overlap, for example the calf can beupper lumbar (saphenous) and upper sacral also.
Regards
jerry Hesch, MHS, PT