Sciatic Entrapment Neuropathy Associated with an Anomalous Piriformis Muscle

Sayson, Samual C.; Ducey, Joseph P.; Maybrey, Jay B.; Wesley, R. L.; Vermillion, Douglas L.

doi:10.1097/00013414-199512000-00007

Cited by 12 publications

(13 citation statements)

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“…For example, chronic pressure on the sciatic nerve by internal tension of the obturator muscle or through anatomical abnormalities in the piriformis muscle could cause pain [ 23 - 26 ]. Surgery to relieve the muscle pressure results in immediate pain relief [ 23 , 26 - 28 ].…”

Section: Discussionmentioning

confidence: 99%

A new analgesic method, two-minute sciatic nerve press, for immediate pain relief: a randomized trial

Jiang

et al. 2008

BMC Anesthesiol

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BackgroundCurrent analgesics have drawbacks such as delays in acquisition, lag-times for effect, and side effects. We recently presented a preliminary report of a new analgesic method involving a two-minute sciatic nerve press, which resulted in immediate short-term relief of pain associated with dental and renal diseases. The present study investigated whether this technique was effective for pain associated with other disease types, and whether the relief was effective for up to one hour.MethodsThis randomized, placebo-controlled, parallel-group trial was conducted in four hospitals in Anhui Province, China. Patients with pain were sequentially recruited by participating physicians during clinic visits, and 135 patients aged 15 – 80 years were enrolled. Dental disease patients included those with acute pulpitis and periapical abscesses. Renal disease patients included those with kidney infections and/or stones. Tumor patients included those with nose, breast, stomach and liver cancers, while Emergency Room patients had various pathologies. Patients were randomly assigned to receive a "sciatic nerve press" in which pressure was applied simultaneously to the sciatic nerves at the back of both thighs, or a "placebo press" in which pressure was applied to a parallel region on the front of the thighs. Each fist applied a pressure of 11 – 20 kg for 2 minutes. Patients rated their level of pain before and after the procedure.ResultsThe "sciatic nerve press" produced immediate relief of pain in all patient groups. Emergency patients reported a 43.5% reduction in pain (p < 0.001). Significant pain relief for dental, renal and tumor patients lasted for 60 minutes (p < 0.001). The peak pain relief occurred at the 10 – 20th minutes, and the relief decreased 47% by the 60th minutes.ConclusionTwo minutes of pressure on both sciatic nerves produced immediate significant short-term conduction analgesia. This technique is a convenient, safe and powerful method for the short-term treatment of clinical pain associated with a diverse range of pathologies.Trial registrationCurrent Controlled Trials ACTRN012606000439549

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Section: Discussionmentioning

confidence: 99%

A new analgesic method, two-minute sciatic nerve press, for immediate pain relief: a randomized trial

Jiang

et al. 2008

BMC Anesthesiol

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“…Supernumerary superior gemellus and piriformis muscles may exert pressure on the SN and should be taken into account by the clinicians17 . The type 6 variation, a variation defined hypothetically by Beaton & Anson , was reported in one case by Ozaki et al18 and Sayson et al19…”

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confidence: 85%

A variation in the high division of the sciatic nerve and its relation with piriformis muscle-case report

Amrutha¹,

Abraham²,

Lale³

2017

IJMSCI

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Sciatic nerve is a broad, thickest and the largest nerve of body, arising from sacral plexus. In our case, sciatic nerve already divided in pelvis, and common peroneal nerve came out above an undivided piriformis, tibial nerve below Piriformis. According to different study, it shows that there are many variations in sciatic nerve division especially in higher divisions. This knowledge is also very important for nurses and junior doctor to prevent deep intramuscular injection hazards in gluteal region.

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“…The tendon is then sectioned at its insertion into the posterior aspect of the greater trochanter and grasped with an Allis clamp. Dissection of the tendon and muscle is performed proximally to its exit from the greater sciatic notch to release any fibrous bands or compressing vessels (48). The sciatic nerve must be explored and any anatomic variations identified with care taken to ensure that it does not pass through the piriformis muscle.…”

Section: Treatmentmentioning

confidence: 99%