piriformis syndrome


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piriformis syndrome

(pir-e-for'mis)
A condition marked by pain in the hip and buttock that radiates up into the lower back and down the leg. In women, the pain may occur during sexual intercourse. This is caused by entrapment of the sciatic nerve as it passes through the piriformis muscle in the buttock. Because the symptoms mimic those caused by a herniated lumbar disk, the syndrome may be confused with that disease. Treatment includes physical therapy to relieve pressure, ultrasound to reduce muscle spasm, and anti-inflammatory medicines. Surgical therapy to free the entrapped nerve may be necessary.
See: sciatica
References in periodicals archive ?
As the flexion, adduction, internal rotation (FAIR) test was positive and there was tenderness with deep palpation of the gluteal region, the etiology was suspected as piriformis syndrome.
Piriformis syndrome A large muscle in the buttock area, the piriformis connects the femur (thighbone) to the spine.
Piriformis syndrome can be the result of buttock and hip pain caused by TPs in the piriformis muscle alone or by compression of the sciatic nerve by the shortened and thickened piriformis muscle.
Piriformis syndrome is an extraspinal entrapment neuropathy in which the piriformis muscle compresses the sciatic nerve, causing sciatica [4].
Bilateral piriformis syndrome was suspected after exclusion of the other pathologies using electrodiagnostic studies and lumbar magnetic resonance imaging.
Some of them include herpes zoster, infection, lumbar nerve root tumor, spinal instability, excessive hypertrophy of the facet joint, ankylosing spondylitis, sacroiliitis, sciatic neuritis, piriformis syndrome, intrapelvic mass (hypertrophic ossification), intraspinal ganglion cyst, endometriosis, adenomyosis, coxarthrosis, et cetera.
Thus, peripheral nerve entrapment syndromes, such as piriformis syndrome and carpal tunnel syndrome, may be treatable by direct PRF.
1 Piriformis syndrome was first described by Yeoman in 1928.
They discuss the pretherapeutic history of botulinum neurotoxin, the history of its clinical development, its pharmacology and immunological properties, and treatments for cervical dystonia, blepharospasm, oromandibular dystonia, laryngeal muscle hyperactivity syndromes, otorhinolaryngological conditions, hemifacial spasm, spasticity, spastic infantile cerebral palsy, tic disorders, essential hand and head tremor, stiff-person syndrome, ophthalmological applications, cosmetic uses, hyperhidrosis, ischemic digits, neuropathic pain, headaches, musculoskeletal pain and arthritis, plantar fasciitis, low-back pain, piriformis syndrome, the gastrointestinal tract, and urological disorders.
The main causes of low back pain are: disc protrusions and herniations; spinal canal stenosis of lumbar spondylolisthesis; and piriformis syndrome (4).
Some practitioners diagnose piriformis syndrome as a sciatica source when back pain is absent.
But a new study suggests the cause of sciatica pain may actually be piriformis syndrome, a condition in which a muscle in the buttocks called the piriformis compresses or irritates the sciatic nerve.