Subjective Findings:

• Pain, itching, tingling and numbness on the outside part of the mid to lower thigh (typically not centered but more prominent on either the right or left side of the low back)
  

Objective Finding:

• Symptoms are reproduced with direct pressure with a finger over the inguinal ligament

• Muscle belly of the Quadratus Lumborum Muscle is tight and painful

Common Etiology of The 3rd Lumbar Nerve Syndrome:

• An anterior rotation of the innominate (hip) bone which places the Quadratus Lumborum muscle on a stretch. This stretching of the muscle can compress the 3rd lumbar nerve against the spinal column.
  

3rd Lumbar Nerve Syndrome (frequently occurs in Rothbarts Foot). The white arrow points to area where the 3rd Lumbar nerve can be compressed by a tight Quadratus Lumborum muscle.

Differential Diagnosis:

• Unaccustomed running

• Tibial or fibular fractures

• Direct blow to the leg

• can easily be misdiagnosed as an inflammation of the sacral iliac articulation

Prof/Dr Brian A Rothbart
Chronic Pain Elimination Specialist
Discovered the Rothbarts Foot Structure and the PreClinical Clubfoot Deformity
Developer of Rothbart Proprioceptive Therapy
Inventor and Designer of Rothbart Proprioceptive Insoles
Founder of International Academy of Rothbart Proprioceptive Therapy
Author of Forever Free From Chronic Pain