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Quadratus Lumborum
Pointer Plus

Pointer Plus

The Pointer Plus is an easy to use trigger point (TP) locator which incorporates a push button stimulation feature to immediately treat Trigger point pain.

 Wireless Tens Device


The Quadratus Lumborum is a muscle of the low back.

Anatomical Attachments:

  • Origin: Attaches to the iliolumbar ligaments and the iliac crest.
  • Insertion: Attaches to the transverse processes of L1, L2, L3, and L4 vertebrae and also to the inferior margin of the 12th rib.

Action: Acting bilaterally, draws the 12th rib downward; flexes the vertebral column and stabilizes an upright posture. Acting unilaterally, laterally flexes the spine.

Synergist: Erector spinae, Multifidus, Rotatores, Serratus posterior inferior, external and internal abdominal Oblique, Rectus abdominis, Intertransversarii, Psoas major and minor.

Nerve Supply: Branches of T12 and L1 nerves.

Vascular supply: Lumbar branch of the iliolumbar artery.

Travell and Simons Trigger Point Pain Referral:  

Click on a small image to view an enlarged image


Trigger Point Signs and Symptoms: Low back pain, constant deep aching pain at rest, difficulty in leaning or turning to the opposite side, which frequently prohibits the ability to stand erect.

Trigger Point Activating and Perpetuating Factors: Lower limb length inequality, a small hemipelvis, short upper arms, soft mattress, leaning forward with the upper body unsupported, repetitive or heavy lifting from the waist, stored psychic stress, and trauma.

Differential Diagnosis: Trochanteric bursitis, S1 nerve compression, Degenerative disc disease, (Segmental, Subluxation, Somatic dysfunction) T10 T11 T12 L1 L2 L3 L4 or L5 Radiculopathy, Sciatica, Cauda equina syndrome, Osteoarthritis, Rheumatoid Arthritis, Sprain/Strain low back, Spinal tumors, Myasthenia gravis, Gallstones, Liver disease, intra-abdominal infections, intestinal parasites, Diverticulosis, Colon Cancer, Aortic aneurysm, Iliac Aneurysm-Thrombosis, Intervertebral stenosis, Multiple sclerosis, Ankylosing Spondylitis, Scoliosis, Spontaneous Abortion (Miscarriage), Cervicitis, Endometriosis, Uterine Fibroids, Uterine Prolapse, Menses, Pregnancy, Pelvic Inflammatory Disease, Peripheral Vascular Disease, Bladder Cancer, Cystitis, Kidney Cancer, Kidney Infection, Kidney stones, Urinary tract infection, Obesity, Reiterís Disease, Pagetís Disease, Prostatitis, Testicular Cancer, Weakened Abdominal Muscles, Eosinophilic fasciitis, Tetanus, Systemic infections or inflammation, Nutritional inadequacy, Metabolic imbalance, Toxicity, Side effects of medication.


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