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https://www.readbyqxmd.com/read/29334862/the-effects-of-an-unanticipated-side-cut-on-lower-extremity-kinematics-and-ground-reaction-forces-during-a-drop-landing
#1
Jae P Yom, Tane Owens, Scott Arnett, Justin Beebe, Veronica Son
Unanticipated direction to cut after landing may alter the lower extremity landing biomechanics when performing landing motions. These alterations may potentially increase the risk of ACL injury. The purpose of this study was to determine if an unanticipated side-cut affects lower extremity landing biomechanics in females. Eighteen recreational female athletes participated in two blocks of testing: the first block of testing consisted of three acceptable trials of anticipated dominant limb and non-dominant limb 45-degree diagonal cutting after landing, which were performed in a counterbalanced order...
January 16, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29317105/reduced-center-of-pressure-modulation-elicits-foot-placement-adjustments-but-no-additional-trunk-motion-during-anteroposterior-perturbed-walking
#2
M Vlutters, E H F van Asseldonk, H van der Kooij
Understanding balance during human gait is complicated by the abundance of recovery options. Among all possible recovery options, three main strategies are often considered for human balance control, being the ankle, hip, and foot placement strategies. All can be addressed when balance is threatened during walking, but their relative importance remains uncertain. We have previously shown that healthy human subjects did not significantly adjust their foot placement relative to the body's center of mass (COM) in the first recovery step following anteroposterior pelvis perturbations, as compared to unperturbed walking...
December 24, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29310150/noninvasive-vascular-assessment-of-lower-extremity-wounds-in-diabetics-are-we-able-to-predict-perfusion-deficits
#3
Iram Naz, Elliot Walters, Cameron M Akbari, Christopher E Attinger, Paul J Kim
Vascular assessment of the lower extremity is a critical step in any patient presenting with lower extremity chronic wounds to predict the likelihood of healing and risk of amputation. This concept is vital in patients with diabetes due to their complex vascular anatomy and disease distribution. Three arteries supply the six angiosomes of the lower extremity (i.e., three-dimensional blocks of tissue fed by a "source" artery in the foot and ankle). In diabetic patients, assessment of adequate blood flow to the lower extremities is complicated by the presence of arterial calcification, associated neuropathy, and inflammation...
October 12, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29226198/restoration-of-the-mechanical-axis-in-total-knee-artrhoplasty-using-patient-matched-technology-cutting-blocks-a-retrospective-study-of-132-cases
#4
Dimitrios N Lyras, Robert Greenhow, Craig Loucks
Background: The aim of this study is to evaluate the accuracy of bone cuts and the resultant alignment, using the MyKnee patient specific cutting blocks. Methods: We retrospectively reviewed 132 patients undergoing primary TKR for osteoarthritis by one single surgeon. The operative time, the preoperative Hip-Knee-Ankle (HKA) axis based on the CT-scan, the postoperative HKA axis based on long axis standing x-rays, the planned and the actual size of the femoral and the tibial components, and the number of the recuts which has been made intraoperative were measured...
September 2017: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/29217947/coexistence-of-peripheral-spondyloarthritis-and-familial-adenomatous-polyposis-a-rare-case-report-with-treatment-contradictions-and-review-of-the-literature
#5
Berna Urkmez, Muge Kepekci, Sevde Ozer Posul, Aylin Rezvani
Background: The coexistence of familial adenomatous polyposis and spondyloarthritis is rarely defined in literature. The primary aim of this presentation is to report a development of peripheral arthritis in 3 years following colon surgery with the diagnosis of familial adenomatous polyposis (FAP). The secondary aim is to discuss the challenge of in treatment of refractory arthritis, which needs to be treated with biologics. However, it is not yet known well about their safety on patients who have risks for cancer development...
July 2017: Ethiopian Journal of Health Sciences
https://www.readbyqxmd.com/read/29205431/anatomic-delineation-of-tarsal-tunnel-innervation-via-ultrasonography
#6
Alvaro Iborra, Manuel Villanueva, Stephen L Barrett, Edgardo Rodriguez-Collazo, Pablo Sanz
OBJECTIVES: High-resolution ultrasonography (US) can play an important role in studying nerves, as it has several advantages. Entrapments of distal tibial nerve branches can be mapped out or diagnosed with selective anesthetic blocks, and US can guide therapeutic procedures, such as radiofrequency ablation and selective infiltrations of specific nerve branches. The aim of this study was to verify that US is an effective method for accurately locating the posterior tibial nerve and its terminal branches, such as the medial calcaneal branch, the first calcaneal branch, and the medial and lateral plantar nerves...
December 4, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29201195/anti-nociceptive-effect-of-dexmedetomidine-in-a-rat-model-of-monoarthritis-via-suppression-of-the-tlr4-nf-%C3%AE%C2%BAb-p65-pathway
#7
Dong Ji, Yalan Zhou, Shuangshuang Li, Dai Li, Hui Chen, Yuanchang Xiong, Yuqiu Zhang, Hua Xu
As a therapeutic target for neuropathic pain, the anti-nociceptive effects of α 2-adrenoceptors (α2AR) have attracted attention. Dexmedetomidine (DEX), a potent and highly selective α2AR agonist, has exhibited significant analgesic effects in neuropathic pain, but the underlying mechanism has remained elusive. The present study investigated the effect of DEX on Toll-like receptor (TLR)4 and nuclear factor (NF)-κB p65 expression, as well as the production of pro-inflammatory cytokines. The rat monoarthritis (MA) model was induced by intra-articular injection of complete Freund's adjuvant (CFA) at the ankle joint...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29173043/joint-kinetic-determinants-of-starting-block-performance-in-athletic-sprinting
#8
Adam Brazil, Timothy Exell, Cassie Wilson, Steffen Willwacher, Ian N Bezodis, Gareth Irwin
The aim of this study was to explore the relationships between lower limb joint kinetics, external force production and starting block performance (normalised average horizontal power, NAHP). Seventeen male sprinters (100 m PB, 10.67 ± 0.32 s) performed maximal block starts from instrumented starting blocks (1000 Hz) whilst 3D kinematics (250 Hz) were also recorded during the block phase. Ankle, knee and hip resultant joint moment and power were calculated at the rear and front leg using inverse dynamics...
November 27, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29164530/ultrasound-guided-lateral-medial-transmuscular-quadratus-lumborum-block-for-analgesia-following-anterior-iliac-crest-bone-graft-harvesting-a-clinical-and-anatomical-study
#9
Rakesh V Sondekoppam, Vivian Ip, David F Johnston, Vishal Uppal, Marjorie Johnson, Sugantha Ganapathy, Ban C H Tsui
BACKGROUND: The anterior iliac crest (AIC) is one of the most common sites for harvesting autologous bone, but the associated postoperative pain can result in significant morbidity. Recently, the transmuscular quadratus lumborum block (TQL) has been described to anesthetize the thoraco-lumbar nerves. This study utilizes a combination of cadaveric models and clinical case studies to evaluate the dermatomal coverage and analgesic utility of TQL for AIC bone graft donor site analgesia. METHODS: Ten ultrasound-guided TQL injections were performed in five cadaver specimens using a lateral-to-medial transmuscular approach...
November 21, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/29160727/a-review-of-perioperative-complications-of-outpatient-total-ankle-arthroplasty
#10
Todd R Borenstein, Kapil Anand, Quanlin Li, Timothy P Charlton, David B Thordarson
BACKGROUND: Total ankle arthroplasty (TAA) is commonly pursued for patients with painful arthritis. Outpatient TAA are increasingly common and have been shown to decrease costs compared to inpatient surgery. However, there are very few studies examining the safety of outpatient TAA. In this study, we retrospectively reviewed 65 consecutive patients who received outpatient TAA to identify complication rates. METHODS: The medical records of 65 consecutive outpatient TAA from October 2012 to May 2016 with a minimum 6-month follow-up were reviewed...
November 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29160101/postoperative-analgesia-using-peripheral-anesthetic-block-of-the-foot-and-ankle
#11
Kelly Cristina Stéfani, Gabriel Ferraz Ferreira, Miguel Viana Pereira Filho
BACKGROUND: Anesthetic block of the peripheral nerves in the foot and ankle is generally used as anesthesia. The increased use of anesthetic blocks has made this technique an increasingly safe method, and its use has been expanded to postoperative analgesia in foot and ankle surgeries. The objective of this study was to evaluate the analgesia time and pain intensity, using objective scores, after peripheral nerve block in foot and ankle surgeries. METHODS: Patients who underwent surgery by the foot and ankle group of our institution from March 2016 to January 2017 were invited to participate in this prospective, randomized, and blinded study after signing an informed consent form...
November 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29121832/how-a-simple-ankle-sprain-turned-into-neuropathic-pain-complex-reflex-sympathetic-dystrophy-versus-erythromelalgia
#12
Ann Regina Lurati
A 36-year-old woman sustained a Grade 2 ankle sprain at work. Two days after the injury, the ankle and foot became red and she complained of "intense burning pain." First diagnosed with complex reflex sympathetic dystrophy, the employee was prescribed medications that provided some pain relief; a subsequent temporary nerve block provided additional relief. However, the symptoms returned and she was treated unsuccessfully with surgical sympathectomy. The employee was referred to a neurologist and diagnosed with primary erythromelalgia, a rare pain disorder that can be mistaken as complex reflex sympathetic dystrophy...
November 1, 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/29110725/tendon-split-lengthening-technique-for-flexor-hallucis-longus-tendon-rupture
#13
Jae Yong Park, Chenyu Wang, Hee Dong Kim, Hyong Nyun Kim
BACKGROUND: Flexor hallucis longus (FHL) tendon rupture is a challenging injury to lead with clawing of the great toe when the FHL tendon is repaired too tight. When the diagnosis is delayed, the tendon ends may not be opposable because of contracture or poor tendon tissue. METHODS: A technique to reconstruct FHL tendon rupture without a free tendon graft is described. A split tendon lengthening is performed at the midfoot around the knot of Henry. Ankle block anesthesia is used to allow the patient's active movement of the interphalangeal (IP) joint to determine the appropriate length of the reconstructed tendon for maintaining balance and preventing the tendon from being too tight or too loose...
November 6, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29108794/comparison-of-customized-cutting-block-and-conventional-cutting-instrument-in-total-knee-arthroplasty-a-randomized-controlled-trial
#14
Nattapol Tammachote, Phonthakorn Panichkul, Supakit Kanitnate
BACKGROUND: Customized cutting block (CCB) was designed to ensure the accurate alignment of knee prostheses during total knee arthroplasty. Given the paucity of CCB efficacy data, we compare CCB with conventional cutting guide using a randomized controlled trial. METHODS: One hundred eight osteoarthritic knee patients underwent total knee arthroplasty by one experienced surgeon were randomized to receive CCB (n = 54) or conventional cutting instrument (CCI) surgery (n = 54)...
October 6, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29103890/large-osseous-defect-reconstruction-using-a-custom-three-dimensional-printed-titanium-truss-implant
#15
Eric So, Vincent H Mandas, Lee Hlad
Treatment of large osseous defects remains a difficult surgical challenge. Autografts and allografts have been known to undergo late collapse, because these options are not specifically designed to withstand the high loads of the foot and ankle. The inability to achieve the correct shape for reconstruction further limits their application. Large osseous defects will result during salvage after failed Lapidus bunionectomy, explantation of failed total ankle replacements, and nonunion of Evans calcaneal osteotomy...
November 2, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29095385/ultrasound-guided-popliteal-sciatic-nerve-block-for-an-ankle-laceration-in-a-pediatric-emergency-department
#16
Takaaki Mori, Yusuke Hagiwara
Although ultrasound-guided peripheral nerve block has recently been introduced into pediatric emergency departments, knowledge of its use is limited. We present here a case demonstrating the safety and effectiveness of ultrasound-guided popliteal sciatic nerve block for a pediatric spoke injury in a pediatric emergency department setting.
December 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29078056/pain-management-after-outpatient-foot-and-ankle-surgery
#17
Akash Gupta, Kanupriya Kumar, Matthew M Roberts, Austin E Sanders, Mackenzie T Jones, David S Levine, Martin J O'Malley, Mark C Drakos, Andrew J Elliott, Jonathan T Deland, Scott J Ellis
BACKGROUND: The number of opioids prescribed and used has increased precipitously over the past 2 decades for a number of reasons and has led to increases in long-term dependency, opioid-related deaths, and diversion. Most studies examining the role of prescribing habits have investigated nonoperative providers, although there is some literature describing perioperative opioid prescription and use. There are no studies looking at the number of pills consumed after outpatient foot and ankle surgeries, nor are there guidelines for how many pills providers should prescribe...
October 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29052225/peripheral-nerve-block-in-ankle-fracture-surgery-a-qualitative-study-of-patients-experiences
#18
M J Henningsen, R Sort, A M Møller, S F Herling
Peripheral nerve blocks are popular as a mode of anaesthesia for limb surgery and their beneficial effects are well documented in elective surgery. However, concerns have been raised about potential rebound pain outweighing the benefits in acute ankle fracture surgery. Furthermore, pain scores and morphine consumption do not provide a full picture, as pain is subjective. To evaluate the clinical usefulness of peripheral nerve blocks, we explored patients' expectations and experiences by means of semi-structured interviews analysed with systematic text condensation...
January 2018: Anaesthesia
https://www.readbyqxmd.com/read/29027771/two-different-placement-paths-in-popliteal-fossa-with-a-novel-nerve-block-needle-with-external-indwelling-cannula-for-postoperative-analgesia-after-foot-and-ankle-surgery-a-randomized-controlled-trial
#19
Miao He, Dandan Ling, Guang-Yu Cai, Tian-Xiao Zou, Bin Yu
BACKGROUND: Previous studies have documented that single injection nearby the sciatic nerve bifurcation would influence the anesthesia and analgesia effect. But this is uncertain for preoperative continuous popliteal sciatic nerve block. So we conducted this trial to compare two paths (proximal to the bifurcation and at the bifurcation) of ultrasound guided continuous popliteal sciatic nerve block in foot and ankle surgery. METHODS: 40 recruited objects were randomly assigned to receive ultrasound-guided continuous popliteal sciatic nerve block at the puncture path proximal to the nerve bifurcation either at the nerve bifurcation...
October 12, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28947595/the-effect-of-muscle-length-on-transcranial-magnetic-stimulation-induced-relaxation-rate-in-the-plantar-flexors
#20
Alexandra F Yacyshyn, Jane Nettleton, Geoffrey A Power, Jennifer M Jakobi, Chris J McNeil
Transcranial magnetic stimulation (TMS) of the motor cortex during a maximal voluntary contraction (MVC) permits functionally relevant measurements of muscle group relaxation rate (i.e., when muscles are actively contracting under voluntary control). This study's purpose was twofold: (1) to explore the impact of muscle length on TMS-induced plantar flexor relaxation rate; and (2) to incorporate ultrasonography to measure relaxation-induced lengthening of medial gastrocnemius (MG) fascicles and displacement of the muscle-tendon junction (MTJ)...
September 2017: Physiological Reports
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