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https://www.readbyqxmd.com/read/29192936/outcomes-of-femoral-head-marrow-stimulation-techniques-at-minimum-2-year-follow-up
#1
David E Hartigan, Itay Perets, Edwin O Chaharbakhshi, John P Walsh, Leslie C Yuen, Benjamin G Domb
This study compared patients who underwent femoral head microfracture with a control group of patients who did not require microfracture. Patients had more than 2 years of follow-up. The patient groups had similar demographic and radiographic features, including sex, age within 5 years, body mass index within 5 points, equal Tönnis grade, lateral center edge angle within 5°, labral treatment, and capsular closure vs release. Inclusion criteria were a minimum of 2 years of follow-up, Outerbridge grade IV cartilage damage, and femoral head marrow stimulation technique performed at the time of arthroscopy...
November 30, 2017: Orthopedics
https://www.readbyqxmd.com/read/28870837/post-tetanic-transcranial-motor-evoked-potentials-augment-the-amplitude-of-compound-muscle-action-potentials-recorded-from-innervated-and-non-innervated-muscles
#2
Hideki Shigematsu, Masahiko Kawaguchi, Hironobu Hayashi, Tsunenori Takatani, Eiichiro Iwata, Masato Tanaka, Akinori Okuda, Yasuhiko Morimoto, Keisuke Masuda, Yusuke Yamamoto, Yasuhito Tanaka
BACKGROUND CONTEXT: Transcranial electrical stimulation used to produce motor evoked potentials (TES-MEPs) and subsequent compound muscle action potential (CMAP) recording is widely used to monitor motor function during surgery when there is risk of damaging the spinal cord. Nonetheless, some muscles do not produce CMAP amplitudes sufficient for intraoperative monitoring. PURPOSE: This study aimed to investigate the utility of tetanic stimulation at single and multiple peripheral nerve sites for augmenting CMAP amplitudes recorded from innervated and non-innervated muscles...
September 1, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28811104/a-double-determination-of-central-motor-conduction-time-in-the-assessment-of-hirayama-disease
#3
Chaojun Zheng, Dongqing Zhu, Feizhou Lu, Yu Zhu, Xiaosheng Ma, Xinlei Xia, Jianyuan Jiang
OBJECTIVE: To investigate central motor conduction time (CMCT) in patients with Hirayama disease (HD) and to analyse the role of motor nerve root lesions in the pathogenesis of HD. METHODS: CMCT measured by F-wave (CMCT-F) and by paravertebral magnetic stimulation (CMCT-M) was performed on both abductor pollicis brevis (APB) and abductor digiti minimi (ADM) in 41 HD patients and 22 controls. All patients underwent neck-flexion magnetic resonance imaging evaluation...
July 31, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28479059/comparison-of-pre-revision-magnetic-resonance-imaging-and-operative-findings-in-mechanically-assisted-crevice-corrosion-in-symptomatic-metal-on-polyethylene-total-hip-arthroplasties
#4
Pavel P Morozov, Munib Sana, Brian J McGrory, Steven W Farraher, Tod G Abrahams
BACKGROUND: Failed total hip arthroplasty (THA) caused by mechanically assisted crevice corrosion (MACC) has serious consequences-notably, adverse local tissue reactions. Metal artifact reduction sequence (MARS) magnetic resonance imaging (MRI) has been used to evaluate failed THA for other reasons but has not been assessed for the analysis of cases of MACC in the setting of metal-on-polyethylene arthroplasties. METHODS: We examined the correlation between preoperative MARS MRI and surgical findings in a cohort of 20 consecutive patients undergoing revision THA for symptomatic MACC without other associated orthopedic diagnoses...
March 18, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28437490/the-diagnosis-and-initial-treatment-of-patellofemoral-disorders
#5
Alan C Merchant, John P Fulkerson, Wayne Leadbetter
Our purpose is to provide simple guidelines for the diagnosis and early care of patellofemoral disorders. Any clinician who treats knee problems, including family practitioners, rheumatologists, orthopedic surgeons, or physical therapists, must know how to make the correct diagnosis, or at least a presumptive diagnosis, at the initial visit. This can avoid unneeded and costly tests, ineffective treatment, and even damaging exercises and unnecessary surgery. The diagnosis of patellofemoral disorders is confusing because they can have many causes...
March 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28291150/acquired-constriction-ring-a-case-of-rubber-band-syndrome
#6
Rahel Meier, Luzian Haug, Carsten Surke, Lukas Mathys, Esther Vögelin
Rubber band syndrome is a rare entity seen in younger children mainly in communities where rubber bands are worn around the wrist for decorative purposes. When the band is worn for a long duration, it burrows through the skin and soft tissues resulting in distal edema, loss of function, and even damage to the neurovascular structures. These symptoms are difficult to relate to this rare but typical condition. We report a case of a 2¾-year-old girl with the history of a linear circumferential scar at the right wrist combined with the limited use of a swollen hand for several weeks...
March 13, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28089162/the-abductor-pollicis-longus-tendon-as-an-alternative-graft-in-hand-surgery
#7
REVIEW
Samuel Rosas, Carolina Mesa, Felipe Mesa
Initial treatment of damaged tendons after soft tissue trauma of the hand can be performed with primary tendon reconstruction or with tendon grafts if indicated. The most frequently used tendons are from the palmaris longus and plantaris muscles. Nonetheless, these muscles may not be present or their anatomic characteristics might not suitable for reconstructive procedures. Here, we present an alternative surgical technique for tendon reconstruction of the hand using abductor pollicis longus accessory tendons as grafts...
March 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28004127/-surgical-access-routes-to-the-hip-joint-in-the-elderly
#8
REVIEW
M Nogler, M Thaler
There are a large number of different approaches to the hip joint. Several conventional and minimally invasive portals exist and numerous technical variations with different instrument sets are available. All approaches can be regarded as standard and can be utilized lege artis. The main differences between approaches are their potential to preserve muscles and avoid damage which would slow down rehabilitation and mobilization. In the elderly the preservation of abductor function is, in the authors' opinion, of utmost importance...
January 2017: Der Orthopäde
https://www.readbyqxmd.com/read/27826460/percutaneous-release-of-the-first-dorsal-extensor-compartment-a-cadaver-study
#9
Ali Güleç, Faik Türkmen, Serdar Toker, Mehmet Ali Acar
BACKGROUND: To evaluate the efficiency of the percutaneous 18-G needle technique in releasing the fibro-osseous sheath over the first dorsal extensor compartment of the hand. METHODS: Using anatomic landmarks, percutaneous release was performed with an 18-G needle on 48 wrists of 24 cadavers. The specimens were then dissected and examined for the completeness of the first dorsal extensor compartment release and any tendon or neurovascular injuries. The tunnel length, number of abductor pollicis longus and extensor pollicis brevis tendons, presence of an intertendinous septum, and the effects of these parameters on percutaneous release were evaluated...
October 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27676836/isokinetic-hip-in-soccer-players-moroccan-experience-about-36-cases
#10
Karima Belhaj, Soumia Meftah, Siham Zahi, Fatima Lmidmani, Abdellatif Elfatimi
OBJECTIVE: Isokinetic evaluation allows accurate and reproducible measurement of dynamic muscle strength. It has several application areas, especially in sports, it allows the evaluation, rehabilitation and re-entrainment. It is rarely used for the hip joint. The objective of this study was to report the isokinetic profile of the abductor and adductor muscles of the hip in Moroccan professional players, while comparing players with a history of groin for those without medical history at the hip...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27575577/acupuncture-reduces-excitability-of-spinal-motor-neurons-in-patients-with-spastic-muscle-overactivity-and-chronic-disorder-of-consciousness-following-traumatic-brain-injury
#11
Jun Matsumoto-Miyazaki, Yoshitaka Asano, Yuka Ikegame, Tomohiro Kawasaki, Yuichi Nomura, Jun Shinoda
BACKGROUND AND OBJECTIVE: Spastic hypertonia usually occurs in patients with chronic disorders of consciousness (DOC) following severe traumatic brain injury (TBI). Spinal motor neuron excitability has been reported to increase in patients with brain damage. The aim of this study was to evaluate the immediate effects of acupuncture on spinal motor neuron excitability in patients with DOC following TBI by using evoked electromyography. SETTING AND PARTICIPANTS: Eleven male patients (mean age, 33 ± 14 years) with refractory muscle spasticity of the upper extremity accompanying chronic DOC following TBI and admitted to Chubu Medical Center for Prolonged Traumatic Brain Dysfunction were included...
November 2016: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/27417041/abnormal-corticospinal-tract-function-and-motor-cortex-excitability-in-non-ataxic-sca2-mutation-carriers-a-tms-study
#12
Luis Velázquez-Pérez, Roberto Rodríguez-Labrada, Reidenis Torres-Vega, Jacqueline Medrano Montero, Yaimeé Vázquez-Mojena, Georg Auburger, Ulf Ziemann
OBJECTIVE: To evaluate if the corticospinal tract is affected in the prodromal stage of spinocerebellar ataxia type 2 (SCA2), prior to development of the cerebellar syndrome. METHODS: A cross-sectional study was conducted in 37 non-ataxic SCA2 mutation carriers and in age- and sex-matched healthy controls. All subjects underwent clinical assessment and transcranial magnetic stimulation to determine corticospinal tract integrity to the right abductor pollicis brevis and tibialis anterior muscles...
August 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27387480/preoperative-risk-factors-associated-with-poor-outcomes-of-revision-surgery-for-pseudotumors-in-patients-with-metal-on-metal-hip-arthroplasty
#13
Ming Han Lincoln Liow, Dimitris Dimitriou, Tsung-Yuan Tsai, Young-Min Kwon
BACKGROUND: Revision surgery of failed metal-on-metal (MoM) total hip arthroplasty (THA) for adverse tissue reaction (pseudotumor) can be challenging as a consequence of soft tissue and muscle necrosis. The aims of this study were to (1) report the revision outcomes of patients who underwent revision surgery for failed MoM hip arthroplasty due to symptomatic pseudotumor and (2) identify preoperative risk factors associated with revision outcomes. METHODS: Between January 2011 and January 2013, a total of 102 consecutive large head MoM hip arthroplasties in 97 patients (male: 62, female: 35), who underwent revision surgery were identified from the database of a multidisciplinary referral center...
December 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27382925/lesion-of-the-hip-abductor-mechanism
#14
Horacio Caviglia, Guillermo Cambiaggi, Nosrat Vattani, María Eulalia Landro, Gustavo Galatro
INTRODUCTION: The disruption of the abductor muscles of the hip after hip revision surgery often causes limping, pain, and instability of the implant. The purpose of our paper is to describe a mesh technique to repair hip abductor mechanism injuries after hip revision. PATIENTS AND METHODS: Forty-six patients with hip abductor damage after prosthetic revision were treated. Inclusion criteria were: patients presenting with prosthetic loosening, complaint of pain, and with a positive Trendelenburg sign due to deficient abductor muscle mechanisms...
2016: SICOT-J
https://www.readbyqxmd.com/read/27004642/rehabilitation-of-gait-in-patients-after-total-hip-arthroplasty-comparison-of-the-minimal-invasive-yale-2-incision-technique-and-the-conventional-lateral-approach
#15
COMPARATIVE STUDY
Harald Böhm, Daniel Hagemeyer, Yvonne Thummerer, Robert Kipping, Ulrich Stöckle, Konrad Scheuerer
The minimal invasive anterolateral Yale 2-incision approach for total hip arthroplasty aims minimizing damage to the muscles for faster recovery of function. Therefore the hypothesis was investigated, that during the rehabilitation process the Yale approach shows a faster return to natural gait than a conventional lateral approach. Nineteen patients had the Yale, 16 the conventional Bauer approach. Instrumented gait analysis was performed 3 days, 3 and 12 month post operatively. Velocity, cadence, step length, weight bearing, thorax lean, Trendelenburg limp, hip abduction moments, and hip muscle activation times were evaluated...
February 2016: Gait & Posture
https://www.readbyqxmd.com/read/26535068/onset-latency-of-motor-evoked-potentials-in-motor-cortical-mapping-with-neuronavigated-transcranial-magnetic-stimulation
#16
Elisa Kallioniemi, Minna Pitkänen, Laura Säisänen, Petro Julkunen
Cortical motor mapping in pre-surgical applications can be performed using motor evoked potential (MEP) amplitudes evoked with neuronavigated transcranial magnetic stimulation. The MEP latency, which is a more stable parameter than the MEP amplitude, has not so far been utilized in motor mapping. The latency, however, may provide information about the stress in damaged motor pathways, e.g. compression by tumors, which cannot be observed from the MEP amplitudes. Thus, inclusion of this parameter could add valuable information to the presently used technique of MEP amplitude mapping...
2015: Open Neurology Journal
https://www.readbyqxmd.com/read/26264179/limitations-of-the-vastus-lateralis-muscle-as-a-substitute-for-lost-abductor-muscle-function-an-anatomical-study
#17
Karl Grob, Rebecca Monahan, Helen Gilbey, Timothy Ackland, Markus S Kuster
Abductor insufficiency after hip arthroplasty resulting from an impaired gluteus medius and minimus remains an unsolved problem in orthopaedic surgery. The vastus lateralis (VL) was described as a functional substitute for abductor insufficiency in 2004. We carried out a macrodissection of twelve cadaveric hemipelvises to investigate the innervation of the VL and adjacent muscles to assess the extent the VL can be safely transferred. Results showed that direct muscle branches to proximal portions of the VL are too short to allow a significant shift; the shift may be as small as 13 mm...
December 2015: Journal of Arthroplasty
https://www.readbyqxmd.com/read/26087883/factors-associated-with-the-presence-of-patellar-tendon-abnormalities-in-male-athletes
#18
Luciana D Mendonça, Evert Verhagen, Natália F N Bittencourt, Gabriela G P Gonçalves, Juliana M Ocarino, Sérgio T Fonseca
OBJECTIVES: To investigate the association between lower limb alignment, range of motion/flexibility and muscle strength with the presence of patellar tendon abnormalities in male athletes. DESIGN: This was a cross-sectional study. METHODS: Thirty-one male basketball and volleyball athletes were assessed for ankle dorsiflexion range of motion, shank-forefoot alignment, iliotibial band flexibility, hip external rotators and abductors isometric torque, passive hip internal rotation range of motion and frontal plane knee and patellar alignment (McConnell and Arno angles)...
May 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/26075026/sex-differences-in-the-branching-position-of-the-nerve-to-the-abductor-digiti-minimi-muscle-an-anatomical-study-of-cadavers
#19
Daisuke Mizuno, Munekazu Naito, Shogo Hayashi, Yusuke Ohmichi, Mika Ohmichi, Takashi Nakano
BACKGROUND: The nerve to the abductor digiti minimi muscle (ADMM nerve) is the first branch of the lateral plantar nerve or originates directly from the posterior tibial nerve. Damage to the ADMM nerve is a cause of heel pain and eventually results in ADMM atrophy. It is known that ADMM atrophy occurs more often in females than in males, and the reason remains unclear. This study aimed to explore sex differences in the branching pattern, position, and angle of the ADMM nerve. METHODS: Forty-two cadavers (20 males, 22 females) were dissected at Aichi Medical University between 2011 and 2015...
2015: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/25840734/modified-mostardi-approach-with-ultra-high-molecular-weight-polyethylene-tape-for-total-hip-arthroplasty-provides-a-good-rate-of-union-of-osteotomized-fragments
#20
Yutaka Kuroda, Haruhiko Akiyama, Manabu Nankaku, Kazutaka So, Shuichi Matsuda
BACKGROUND: A lateral approach is common in total hip arthroplasty because of the good exposure it provides and its low complication rates. However, a drawback of the procedure is that the abductor mechanism is damaged when the tendinous insertion of the abductor muscle is split. Here, we describe a wafer technique using ultra-high-molecular-weight polyethylene tape for promising reattachment of the abductor mechanism. METHODS: We retrospectively evaluated 120 consecutive primary total hip arthroplasties performed using a modified Mostardi approach, which involved reattaching the trochanter using either a braided polyester suture (polyester suture group, n = 60) or ultra-high-molecular-weight polyethylene tape (UHMWPE tape group, n = 60)...
July 2015: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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