Lower back pain | hip internal rotation

Lower back pain is commonly associated with irritation of the L5 and S1 nerve roots bilaterally. Depending on whether the L5 or the S1 nerve root is more irritated, there can be pain and spasm that causes tightening of the muscles that perform external rotation or...

Lower back pain | hip external rotation

Lower back pain is commonly due to irritation of the L5 and S1 nerve roots. Hip pain may result secondary to pain and spasm muscles of the lower back and all muscles that cross the hip. Patients may have trouble with external rotation of the hip due to pain and spasm...

Lower back pain | hip extension

Lower back pain caused by S1 nerve root irritation will affect the hip extensor muscles which S1 nerve root so richly supplies. The hip extensor muscles are best tested by having the patient lie facedown. The patient bends the knee and lifts the knee off the surface...

Lower back pain | knee pain| knee extension

Patients with lower back pain will often complain of knee pain. The most common roots to be irritated are the L5 and S1 nerve roots which supply many muscles that cross the knee or insert near the knee. Therefore when muscles such as the hamstrings, gluteus maximus,...

Lower back pain | knee flexion | Hamstrings

Patients with lower back pain due to lumbosacral nerve root irritation often complain of knee pain. The knee pain may occur with straightening the knee or with bending the knee. This topic will be on muscles that bend the knee (knee flexors) . However, if there is...