They could be several things. Many different systems use an alphanumerical combination to record and file thinsg, and the terms L4 and L5 can refer to some specific things depending on what field you work in. Examples commonly used are the lumbar verebrae L4 and L5 in anatomy, and the LaGrangian points L4 and L5 in astronomy.
The lumbar vertibrae L4 and L5 are the sciatic region of the back and are the most common area of disk compression failure, leading to chronic sciatica and other lower body nerve compromise.
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whatis anterior subluxation on L5 on S1 mean?
what is mutilevel dissication. l3 andl4 l4 and l5 l5 and s1
in adults its done at L3 and L4 or L4 and L5
How much a surgery on lumber L4 L5
What is a L5-S1 , right paramedian protusion
The L4-L5 disks are at the highest stress point of the lower lumbar spine. As such, it's more susceptible to overstressing of the joint and aggravating the disks.,
The L4 and L5 vertebrae are located in the lower back. The two lowest discs (L4-L5 and L5-S1) take the most strain and are the most likely to herniate. This can cause lower back pain and possibly numbness that radiates through the leg and down to the foot (sciatica).
One treatment for a disc bulge in L4 and L5 would be steroid injections by your physician. If the bulge is not extreme, the recommendation may be simply rest and anti-inflammatory medications.
grade 1 of l4 and l5
MR imagemorphology is in favour of early marginal osteophytes at few levels. mildbroad disc bulge at l4-l5 causing minimal thecal sac indentation
Grade 1 degenerative anterolisthesis of L4 on L5 refers to a condition where the vertebra at the L4 level has shifted forward in relation to the L5 vertebra due to degenerative changes. Degenerative disc space narrowing and facet arthrosis at the L4-L5 and L5-S1 levels indicate wear and tear of the intervertebral discs and facet joints in the lower lumbar spine. Resultant canal stenosis and neural foraminal narrowing at L4-L5 suggest compression of the spinal canal and nerve roots at the L4-L5 level, potentially leading to symptoms such as pain, numbness, or weakness in the lower back and legs.