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Piriformis

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https://www.readbyqxmd.com/read/29137900/the-posterior-capsular-ligamentous-complex-contributes-to-hip-joint-stability-in-distraction
#1
Masaki Takao, Yoshito Otake, Norio Fukuda, Yoshinobu Sato, Mehran Armand, Nobuhiko Sugano
BACKGROUND: Laxity of soft tissues after total hip arthroplasty is considered to be a cause of accelerated wear of bearing surfaces and dislocation. The purpose of this study is to assess the contribution of the anterior and posterior capsular ligamentous complexes and the short external rotators, except the quadratus femoris, on the stability of the hip against axial traction. METHODS: The study subjects comprised 7 fresh cadavers with 12 normal hip joints. In 6 hips, soft tissues surrounding the hip joint were resected in the following order to simulate the anterior approach: anterior capsule, posterior capsule, piriformis, conjoined tendon, and external obturator...
November 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29123624/state-of-education-regarding-ultrasound-guided-interventions-during-pain-fellowships-in-korea-a-survey-of-recent-fellows
#2
Hyung Tae Kim, Sae Young Kim, Gyung Jo Byun, Byung Chul Shin, Jin Young Lee, Eun Joo Choi, Jong Bum Choi, Ji Hee Hong, Seung Won Choi, Yeon Dong Kim
Background: Recently, the use of ultrasound (US) techniques in regional anesthesia and pain medicine has increased significantly. However, the current extent of training in the use of US-guided pain management procedures in Korea remains unknown. The purpose of the present study was to assess the current state of US training provided during Korean Pain Society (KPS) pain fellowship programs through the comparative analysis between training hospitals. Methods: We conducted an anonymous survey of 51 pain physicians who had completed KPS fellowships in 2017...
October 2017: Korean Journal of Pain
https://www.readbyqxmd.com/read/29072775/a-new-endoscopic-minimal-invasive-approach-for-pudendal-nerve-and-inferior-cluneal-nerve-neurolysis-an-anatomical-study
#3
Stéphane Ploteau, Roger Robert, Luc Bruyninx, Jérome Rigaud, Katleen Jottard
AIM: To describe a new minimal invasive approach of the gluteal region which will permit to perform neurolysis of the pudendal and cluneal nerves in case of perineal neuralgia due to an entrapment of these nerve trunks. METHOD: Ten transgluteal approaches were performed on five cadavers. Relevant anatomic structures were dissected and further described. Neurolysis of the pudendal nerve or cluneal nerves were performed. Landmarks for secure intraoperative navigation were indicated...
October 26, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29030655/-tendonitis-calcarea-of-the-piriformis-muscle-in-a-young-amateur-athlete
#4
J Fürmetz, G Siebenbürger, V Herterich, W Böcker
Distinct calcific tendonitis associated with chronic pain refractory to conservative treatment can require operative treatment. Symptomatic calcific tendonitis of the piriform muscle, despite calcific tendonitis of other regions, is an extremely rare diagnosis. We report about a young athlete with persistent gluteal pain despite long-term conservative treatment. MRI scans revealed tendonitis calcarea with surrounding soft tissue inflammation. On open surgical removal of the calcification, pain symptoms were relieved and the patient was able to return to sports...
October 13, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28946529/management-of-refractory-sciatic-neuropathic-pain-using-ultrasound-guided-pulsed-radiofrequency
#5
Dong Gyu Lee, Yun Woo Cho, Kil-Ho Cho, Min Cheol Chang
BACKGROUND AND OBJECTIVE: Nowadays, pulsed radiofrequency (PRF) is being used to control several types of musculoskeletal pain. Herein, we report a successful application of ultrasound (US)-guided PRF for a patient with refractory sciatic neuropathic pain. CASE REPORT: We applied US-guided PRF to a 50-year-old man, suffering from refractory neuropathic pain on the left foot following sciatic neuropathy for a period of approximately 6 months. We performed PRF on the level of piriformis muscle because the lesion of the sciatic nerve was presented digitally from the level of piriformis muscle on the magnetic resonance images...
September 22, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28917605/outcomes-using-wedge-stem-with-full-hydroxiapatite-coverage-with-a-minimum-of-5-years-follow-up
#6
D Godoy-Monzon, M Buttaro, F Comba, G Zanotti, F Piccaluga, I Neira-Borrajo
INTRODUCTION: Total Hip Arthroplsty (THA) using uncemented stems is a popular practice in the last decades. The implant survivorship is crtitical and a less than 10% revision at 10 years is been propesed for commercialization and use. OBJECTIVE: To analyse the clinicoradiological results of an uncemented hydroxiapatite covered wedge stem with a 5 years minimum follow up. MATERIAL AND METHODS: Prospective study, patients aged from 21-75years were included...
September 13, 2017: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/28866346/surgical-management-of-deep-gluteal-syndrome-causing-sciatic-nerve-entrapment-a-systematic-review
#7
REVIEW
Jeffrey Kay, Darren de Sa, Laura Morrison, Emily Fejtek, Nicole Simunovic, Hal D Martin, Olufemi R Ayeni
PURPOSE: To assess the causes, surgical indications, patient-reported clinical outcomes, and complications in patients with deep gluteal syndrome causing sciatic nerve entrapment. METHODS: Three databases (PubMed, Ovid [MEDLINE], and Embase) were searched by 2 reviewers independently from database inception until September 7, 2016. The inclusion criteria were studies reporting on both arthroscopic and open surgery and those with Level I to IV evidence. Systematic reviews, conference abstracts, book chapters, and technical reports with no outcome data were excluded...
August 30, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28836092/four-symptoms-define-the-piriformis-syndrome-an-updated-systematic-review-of-its-clinical-features
#8
REVIEW
Kevork Hopayian, Armine Danielyan
PURPOSE: To update the evidence on the clinical features of the piriformis syndrome since the first systematic review published in 2010. METHOD: A systematic review of all case, cross-sectional and prevalence studies. RESULTS: The commonest features reported were: buttock pain, pain aggravated on sitting, external tenderness near the greater sciatic notch and pain on any maneuver that increases piriformis muscle tension, and limitation of straight leg raising...
August 23, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28830192/sciatic-neuromuscular-variants-on-mr-neurography-frequency-study-and-interobserver-performance
#9
Jason Eastlack, Lulu Tenorio, Vibhor Wadhwa, Kelly Scott, Adam Starr, Avneesh Chhabra
OBJECTIVE: To evaluate the frequency of sciatic neuromuscular variants on MR neurography and determine the interobserver variability. METHODS: A retrospective evaluation of 137 consecutive lumbosacral plexus magnetic resonance neurography examinations was performed. All examinations were performed using nerve selective 3D imaging and independently reviewed by two readers for the presence of sciatic neuromuscular variants and piriformis muscle asymmetry. Inter- and intraobserver performance were evaluated...
November 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28804634/muscle-mri-findings-in-a-one-year-old-girl-with-merosin-deficient-congenital-muscular-dystrophy-type-1a-due-to-lama2-mutation-a-case-report
#10
Yingyin Liang, Guidian Li, Songlin Chen, Rongxing He, Xiangxue Zhou, Yingming Chen, Xue Xu, Ronglan Zhu, Cheng Zhang
The objective of the present study was to characterize the muscle magnetic resonance imaging (MRI) features of a 1-year-old girl with merosin-deficient congenital muscular dystrophy type 1A (MDC1A). Beginning as an infant, this patient exhibited severe hypotonia and proximal weakness, as well as delays in developmental milestones. Her serum creatine kinase levels at 3 months, 8 months and 1 year were 2,959, 1,621 and 1,659 U/l, respectively. Brain MRI indicated symmetric, mild T1WI low, mild T2WI and FLAIR high radial patterns in the white matter of the Cornu posterius of the ventricular lateral...
August 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28770350/surgical-outcomes-of-intramedullary-nailing-for-diaphyseal-atypical-femur-fractures-is-it-safe-to-modify-a-nail-entry-in-bowed-femur
#11
Ji Wan Kim, Hyunuk Kim, Chang-Wug Oh, Joon-Woo Kim, Oog-Jin Shon, Young-Soo Byun, Jung Jae Kim, Hyoung Keun Oh, Hiroaki Minehara, Kyu-Tae Hwang, Ki Chul Park
INTRODUCTION: The purpose of the study was to determine the surgical outcomes of intramedullary nailing in diaphyseal atypical femoral fractures (AFFs) and to evaluate the clinical outcomes of nail entry modification technique. MATERIALS AND METHODS: We retrospectively reviewed diaphyseal AFFs treated with IMN at nine institutions. In total, 82 patients were included. Surgical outcomes such as complication, union time, and femoral bowing were evaluated. We modified the nail entry of the straight nail from piriformis fossa to the tip of the greater trochanter in the bowed femur and compared the surgical outcomes between the original group and the modification group...
August 2, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28750995/effect-of-stretching-of-piriformis-and-iliopsoas-in-coccydynia
#12
P P Mohanty, Monalisa Pattnaik
Pain in the coccyx is referred as coccydynia. The pain aggravates in weight bearing i.e. sitting. Total 48 persons with coccydynia diagnosed clinically were recruited and randomly assigned into one of the 3 groups. Experimental group I were treated by stretching of piriformis and iliopsoas muscles, experimental group II were treated by stretching of piriformis and iliopsoas muscles and Maitland's rhythmic oscillatory thoracic mobilization over the hypomobile segments and the conventional group were treated by seat cushioning + Sitz bath + Phonophorosis...
July 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28748363/type-ii-sciatic-nerve-variant-an-unexpected-interventional-hazard
#13
Graeme Thompson, Ruan Visagie
A 12-year-old girl presented with a 1-week history of right hip pain. MRI revealed a lesion in the incompletely fused posterior triradiate cartilage of the right acetabulum with imaging characteristics of an osteoid osteoma. The surgeon requested guidewire placement under CT guidance for lesion drilling. The CT approach was planned to avoid the usual course of the sciatic nerve, and the lesion was successfully removed and confirmed at histology to be an osteoid osteoma. At a follow-up visit, MRI showed no recurrence but demonstrated an abnormal common peroneal nerve from the sciatic notch to the popliteal fossa with denervation oedema in the tibias anterior and peroneal musculature...
July 26, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28741033/refractory-sciatica-caused-by%C3%A2-gluteal-varicosities
#14
Zheng Zhang, Xuebing Zhang, Chen Yang, Xiaoyu Wen
We report a case of sciatica that fulfilled the diagnostic criteria for inferior gluteal vein varicosities according to patient history and on magnetic resonance imaging. Since conservative treatment was ineffective, excision-ligation of the varicose vein was performed as recommended in the previous literature. However, pain was only slightly relieved and then aggravated. Reoperation involving wide release and resection of the piriformis outlet was performed. Pain resolved immediately thereafter. We suggest that this case of sciatica resulted from both piriformis entrapment and vein varicosities...
July 24, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28709584/first-sacral-nerve-and-anterior-longitudinal-ligament-anatomy-clinical-applications-during-sacrocolpopexy
#15
Maria E Florian-Rodriguez, Jennifer J Hamner, Marlene M Corton
BACKGROUND: The recommended location of graft attachment during sacrocolpopexy is at or below the sacral promontory on the anterior surface of the first sacral vertebra. Graft fixation below the sacral promontory may potentially involve the first sacral nerve. OBJECTIVE: The objectives of this study were to examine the anatomy of the right first sacral nerve relative to the midpoint of the sacral promontory and to evaluate the thickness and ultrastructural composition of the anterior longitudinal ligament at the sacral promontory level...
July 11, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28697079/exchange-nailing-for-hypertrophic-femoral-nonunion
#16
Alejandro Marquez-Lara, T David Luo, Rebecca Senehi, Arun Aneja, Hoyt Randy Beard, Eben A Carroll
Exchange nailing has proven to be a reliable surgical technique for the management of aseptic femoral shaft nonunions. Similar to primary intramedullary nail fixation for femur fractures, exchange nailing for aseptic hypertrophic nonunions of the femur relies on successful navigation of the starting point and proper nail trajectory to minimize coronal and sagittal plane deformities. Compared with the supine position, the lateral decubitus position has the advantage of allowing gravity to displace the soft tissue around the piriformis start site to facilitate nail entry...
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28633454/long-term-efficacy-of-ultrasound-guided-injection-of-incobotulinumtoxina-in-piriformis-syndrome
#17
Manuel Rodríguez-Piñero, Victoria Vidal Vargas, Aguas Santas Jiménez Sarmiento
No abstract text is available yet for this article.
June 17, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28630740/the-effects-of-hip-abduction-on-sciatic-nerve-biomechanics-during-terminal-hip-flexion
#18
Hal David Martin, Anthony N Khoury, Ricardo Schroder, Juan Gomez-Hoyos, Samrat Yeramaneni, Manoj Reddy, Ian James Palmer
Terminal hip flexion contributes to increased strain in peripheral nerves at the level of the hip joint. The effects of hip abduction and femoral version on sciatic nerve biomechanics are not well understood. A decrease in sciatic nerve strain will be observed during terminal hip flexion and hip abduction, independent of femoral version. Six un-embalmed human cadavers were utilized. Three Differential Variable Reluctance Transducers (DVRTs) sensors were placed on the sciatic nerve while the leg was flexed to 70° with a combination of - 10°, 0°, 20° and 40° adduction/abduction...
July 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28620309/inhibition-of-the-trpm2-and-trpv1-channels-through-hypericum-perforatum-in-sciatic-nerve-injury-induced-rats-demonstrates-their-key-role-in-apoptosis-and-mitochondrial-oxidative-stress-of-sciatic-nerve-and-dorsal-root-ganglion
#19
Fuat Uslusoy, Mustafa Nazıroğlu, Bilal Çiğ
Sciatic nerve injury (SNI) results in neuropathic pain, which is characterized by the excessive Ca(2+) entry, reactive oxygen species (ROS) and apoptosis processes although involvement of antioxidant Hypericum perforatum (HP) through TRPM2 and TRPV1 activation has not been clarified on the processes in SNI-induced rat, yet. We investigated the protective property of HP on the processes in the sciatic nerve and dorsal root ganglion neuron (DRGN) of SNI-induced rats. The rats were divided into five groups as control, sham, sham+HP, SNI, and SNI+HP...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28616638/piriformis-muscle-syndrome-with-assessment-of-sciatic-nerve-using-diffusion-tensor-imaging-and-tractography-a-case-report
#20
Keizo Wada, Tomohiro Goto, Tomoya Takasago, Daisuke Hamada, Koichi Sairyo
Piriformis muscle syndrome (PMS) is difficult to diagnose by objective evaluation of sciatic nerve injury. Here we report a case of PMS diagnosed by diffusion tensor imaging (DTI) and tractography of the sciatic nerve, which can assess and visualize the extent of nerve injury. The patient was a 53-year-old man with a 2-year history of continuous pain and numbness in the left leg. His symptoms worsened when sitting. Physical examination, including sensorimotor neurologic tests, the deep tendon reflex test, and the straight leg raise test, revealed no specific findings...
June 14, 2017: Skeletal Radiology
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