How serious is L4-5 Spondylosis?

[CDreawves]

The patient had NO symptoms or back pain/spine related issues prior to a car accident in Sept 2015.
Now the issues are gradually worsening with sporadic pain down the legs, left forearm and hands.

MRI was done Dec 2015 with the above stated result.
Additional results related to the L4-5 was:
... with high signal intensity dorsal/left lateral annular fissuring and mild dorsal bulging. Normal facet joints. No disc herniation, stenosis or impingement.

[caregiver222]

These patients commonly "self-splint" and
progressively lose range of motion. The drill
is intermittant axial traction and range of motion
exercises through the limits of pain for.the
cervical nerve entrapment. Special exercises
are helpful for the Lumbar nerve entrapment
with transdermal lidocaine patches, DSMO,
a TENS device and ocasional use of anti
inflamatories.

[caregiver222]

Clearly, numbness or.pain in the forearms
suggests cervical nerve entrapment. Juxtaposed
with lumbar nerve entrapment suggests
systemic degenerative spinal disease. An MRI
of the cervical area is indicated. Subluxation
pain often develops months to years after
an accident.