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Dr. Andrew Meyr Recommended

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46 papers 0 to 25 followers AJM approved.
https://www.readbyqxmd.com/read/22192856/average-depth-of-tarsometatarsal-joint-for-trephine-arthrodesis
#1
Jay D Ryan, Eugene D Timpano, Thomas A Brosky
The trephine arthrodesis technique has been shown to be an effective method for various foot and ankle fusion procedures, with acceptable rates of fusion reported. The tarsometatarsal joints are an excellent example for this procedure because of the joint shape and soft tissue stability. The success of this procedure depends on many factors, but a large consideration is adequate joint resection. A cadaveric study to examine the joint depth of the Lisfranc complex was undertaken, allowing for improved understanding of the resection needed to maintain a stable plantar cortex while removing all apposing joint surfaces...
March 2012: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/15768359/biomechanics-of-the-first-ray-part-v-the-effect-of-equinus-deformity-a-3-dimensional-kinematic-study-on-a-cadaver-model
#2
Cherie H Johnson, Jeffrey C Christensen
The positional change of the medial column of the foot in closed kinetic chain with variable Achilles tendon tension was investigated in seven fresh frozen cadaver specimens using a 3-dimensional radio wave tracking system. The distal tibia and fibula and the intact ankle and foot and were mounted on a non-metallic loading frame. The frame allowed positioning of the foot to simulate midstance phase of gait while the tibia and fibula were axially loaded to 400 N. To record osseous motion, receiving transducers were attached to the first metatarsal, medial cuneiform, navicular, and talus...
March 2005: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/12400710/biomechanics-of-the-first-ray-part-iv-the-effect-of-selected-medial-column-arthrodeses-a-three-dimensional-kinematic-analysis-in-a-cadaver-model
#3
COMPARATIVE STUDY
Brian A Roling, Jeffrey C Christensen, Cherie H Johnson
This study is the fourth in a series of investigations on the biomechanics of the first ray, this part focusing on open kinetic chain range of motion simulating the clinical examination. Segmental sagittal range of motion of the medial column was measured on intact cadaver specimens and compared to various simulated medial column arthrodesis patterns. These arthrodeses included the first metatarsocuneiform, first metatarsocuneiform-intercuneiform, naviculocuneiform, and talonavicular joints. The specimens were mounted to a test apparatus that was comprised of a modified ankle-foot orthosis which held the ankle and rearfoot in fixed neutral position...
September 2002: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/11417593/biomechanics-of-the-first-ray-part-iii-consequences-of-lapidus-arthrodesis-on-peroneus-longus-function-a-three-dimensional-kinematic-analysis-in-a-cadaver-model
#4
COMPARATIVE STUDY
R A Bierman, J C Christensen, C H Johnson
It has long been proposed that first metatarsocuneiform joint (FMCJ) arthrodesis, also known as Lapidus arthrodesis, can realign the first ray and permanently lock the FMCJ to control hypermobility. Left unanswered is the functional consequence of peroneus longus (PL) after such a procedure. In this study, the effects of PL on the medial column of the foot before and after metatarsocuneiform arthrodesis were evaluated. Seven fresh-frozen cadaver specimens with an intact foot and ankle were mounted on a custom-made acrylic frame and loaded to 400 N while midstance motor function was simulated with pneumatic actuators...
May 2001: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/10789097/biomechanics-of-the-first-ray-part-ii-metatarsus-primus-varus-as-a-cause-of-hypermobility-a-three-dimensional-kinematic-analysis-in-a-cadaver-model
#5
S M Rush, J C Christensen, C H Johnson
Variation in functional stability of the first metatarsocuneiform joint was analyzed between transverse plane deviated (adducted) and corrected first metatarsal positions in a closed kinetic chain model. Six fresh frozen cadaver specimens with intact ankles and feet were fitted with a custom fabricated titanium metatarsal jig, which allowed for manipulation of the first metatarsal in the transverse plane. Specimens were mounted into a custom-made acrylic load frame and axially loaded to 400 N. Radiowave three-dimensional tracking transducers were attached to the following osseous segments: first metatarsal head and base, medial cuneiform, and second metatarsal...
March 2000: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/10553544/biomechanics-of-the-first-ray-part-i-the-effects-of-peroneus-longus-function-a-three-dimensional-kinematic-study-on-a-cadaver-model
#6
C H Johnson, J C Christensen
The closed kinetic chain effects of peroneus longus (PL) activity on the medial column of the foot were investigated in seven fresh-frozen cadaver specimens using a three-dimensional radiowave tracking system. Specimens, consisting of the distal half of the leg and the intact ankle and foot, were mounted on a nonmetallic loading frame which allowed positioning of the foot to simulate midstance position of gait. The tibia and fibula were axially loaded to 400 N. Receiving transducers were attached to the first metatarsal, medial cuneiform, navicular, and talus...
September 1999: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/23787225/descriptive-quantitative-analysis-of-hallux-abductovalgus-transverse-plane-radiographic-parameters
#7
Andrew J Meyr, Adam Myers, Jane Pontious
Although the transverse plane radiographic parameters of the first intermetatarsal angle (IMA), hallux abductus angle (HAA), and the metatarsal-sesamoid position (MSP) form the basis of preoperative procedure selection and postoperative surgical evaluation of the hallux abductovalgus deformity, the so-called normal values of these measurements have not been well established. The objectives of the present study were to (1) evaluate the descriptive statistics of the first IMA, HAA, and MSP from a large patient population and (2) to determine an objective basis for defining "normal" versus "abnormal" measurements...
July 2014: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/23770190/techniques-of-popliteal-nerve-regional-anesthesia
#8
Corine Creech, Andrew J Meyr
Regional anesthesia for blockade of the sciatic nerve in the popliteal fossa is a useful adjunct to pain management in the perioperative setting for foot and ankle surgeons. The present tip aimed to provide a review of the relevant anatomy and technique for popliteal nerve block from the posterior and lateral approaches and to provide discussion and images of the use of peripheral nerve stimulation and ultrasound guidance as adjuvant methods to improve efficacy and reproducibility.
September 2013: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/20797584/nail-puncture-wound-through-a-rubber-soled-shoe-a-retrospective-study-of-96-adult-patients
#9
Guy Rubin, Avi Chezar, Raul Raz, Nimrod Rozen
Nail punctures through rubber-soled shoes expose the foot to the possibility of deep infection and foreign body retention. In this article, we describe characteristics of adult patients who sustained nail puncture wounds through a rubber-soled shoe and were treated at our institution from January 1, 2000, to January 8, 2008. Of the 96 patients, 36 (37.5%) were treated conservatively and 60 (62.5%) were treated surgically in the operating room. Of those treated surgically, 15 (25%) had a foreign body extracted during the operation...
September 2010: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/20619692/a-5-year-review-of-statistical-methods-presented-in-the-journal-of-foot-ankle-surgery
#10
REVIEW
Andrew J Meyr
This article presents a review of the statistical analyses used by authors and published in The Journal of Foot & Ankle Surgery from January 2004 to December 2008. Of the 215 articles reviewed, descriptive statistics were used in 84% and comparative statistics in 68%. The most commonly used comparative statistical tests were Student t test (30%), analysis of variance (14%), the Mann Whitney U test (Wilcoxon rank sum) test (13%), chi-squared analyses (11%), and Fisher's exact test (10%). The aim of this investigation was to review the prevalences of various statistical methods used by foot and ankle surgeons, as reported in The Journal of Foot & Ankle Surgery, and to serve as a primer of the most common methods used in the analysis of surgical data and the development of a scientific basis for the practice of foot and ankle surgery...
September 2010: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/19700118/joint-curettage-arthrodesis-technique-in-the-foot-a-histological-analysis
#11
Justin T Johnson, John M Schuberth, Sean D Thornton, Jeffrey C Christensen
UNLABELLED: Arthrodesis via joint contour preservation using the curettage method has become popular in foot and ankle surgery to avoid segmental shortening and the need to bone graft. Despite its popularity, the effect of joint curettage has never been histologically evaluated. Knowledge of the histological appearance after joint curettage would be helpful to the foot and ankle surgeon to better understand the function of joint surface preparation for arthrodesis. Five cadaver specimens were used to harvest the first metatarsocuneiform and subtalar joints for routine histological analysis after performing joint curettage technique...
September 2009: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/19448174/lower-extremity-sclerotomes-clinical-applications-and-the-modified-mayo-block
#12
REVIEW
Andrew J Meyr, Raymond Diprimio
A sclerotome is an anatomical concept that defines an area of bone supplied by a single spinal nerve. Similar to the familiar dermatomes, sclerotomes provide an element of depth to the sensory innervation of the lower extremity based on the deep fascia as an embryologic boundary. Anatomical knowledge of sclerotomes can be used clinically in the diagnosis and treatment of pain and in the perioperative setting. Specifically, a modified version of the classic Mayo block is presented to highlight an active anatomical approach to peripheral nerve blockade...
May 2009: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/19121751/complications-and-salvage-of-elective-central-metatarsal-osteotomies
#13
REVIEW
Richard Derner, Andrew J Meyr
In order to provide proper treatment intervention, the foot and ankle surgeon must develop a further understanding of the pathoanatomy and pathomechanics leading to specific surgical complications of central metatarsal osteotomies. In addition to providing the authors' experiences and potential solutions with regard to these complications, a clear definition of the progression of the complication course is presented. The specific complications of floating toe deformity, metatarsalphalangeal joint stiffness, recurrent metatarsalgia, transfer lesions, malunions, and nonunions are discussed...
January 2009: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/18486855/post-operative-pain-management-using-patient-controlled-analgesia
#14
REVIEW
Jillene R Costa, Robert Coleman
Patient-controlled analgesia is an effective form of postoperative pain management for select lower extremity orthopedic procedures in the in-patient setting. The goal of this article is to present an introduction to the prescription and management of patient-controlled analgesia in the acute, postoperative setting. The surgeon should have a thorough understanding of this intervention as it relates to pain control and overall patient care.
July 2008: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/18486853/lower-extremity-regional-anesthesia-with-the-low-sciatic-nerve-block
#15
REVIEW
Keith Goss
Regional anesthesia with local anesthetics is an important component of the perioperative pain management algorithm in the context of lower extremity orthopedic surgery. These techniques have proved to be consistent and effective in minimizing postoperative pain and narcotic usage, and in reducing the morbidity associated with lower extremity surgery. The mechanisms of local anesthetic agents as they relate to acute surgical pain are reviewed in this article, with an emphasis on the low sciatic nerve block...
July 2008: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/18486852/non-pharmacologic-pain-management-intervention
#16
REVIEW
Melissa L Adams, Gary J Arminio
Unfortunately, many physicians and patients only seek pharmacologic treatments to aid in pain relief; however, many nonpharmacologic interventions exist with excellent potential for pain treatment. This article reviews several of these strategies with an emphasis on clinical indications and expected outcomes. The topics of chronic pain psychology and prescription writing also are reviewed. As a medical provider, it is important to remain open minded to alternative approaches to pain control.
July 2008: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/18486851/current-concepts-in-pain-management-pharmacologic-options-for-the-pediatric-geriatric-hepatic-and-renal-failure-patient
#17
REVIEW
Stephen S Stern, Mario N Ponticello
This article provides a review for current practice. Strict guidelines are not available on some topics, and they may never be drafted because pain is such a unique individual experience. It is recommended to coordinate care with other medical specialties when patients present with organ dysfunctions or are at the extremes of age. More data are required in the field of pain management, particularly with regard to renal and hepatic dysfunction. In turn, these data serve as a foundation for physicians making practice decisions based on current evidence...
July 2008: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/18486849/painful-diabetic-neuropathy
#18
REVIEW
Rhonda S Cornell, Ivica Ducic
The podiatric physician often encounters complex painful neuropathies in daily practice. Diabetic neuropathy is one form of chronic neuropathic pain dealt with on a regular basis. The goal of this article is to review the pathophysiology, diagnosis, and treatment options of this complaint. Medical and surgical interventions are discussed, with a clinical emphasis on patient selection and prevention.
July 2008: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/17255681/a-critical-look-at-the-evidence-for-and-against-elective-epinephrine-use-in-the-finger
#19
REVIEW
Christopher J Thomson, Donald H Lalonde, Keith A Denkler, Anton J Feicht
BACKGROUND: Medical texts continue to perpetuate the belief that epinephrine should not be injected in fingers. Little attention has been paid to analyze the evidence that created this belief to see whether it is valid. The significance is that elective epinephrine finger injection has been shown to remove the need for a tourniquet, and therefore delete sedation and general anesthesia for much of hand surgery. METHODS: All of the evidence for the antiadrenaline dogma comes from 21 mostly pre-1950 case reports of finger ischemia associated with procaine and cocaine injection with epinephrine...
January 2007: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/16958392/anterior-tarsal-tunnel-syndrome
#20
REVIEW
Lawrence A DiDomenico, Eric B Masternick
Compression of the deep peroneal nerve is commonly referred to as anterior tarsal tunnel syndrome. Although rare, this syndrome remains poorly diagnosed. The syndrome is characterized by pain, weakness, and sensory changes of the foot and ankle. Non-operative measures should be attempted to reduce or remove the external compression along the anterior aspect of the foot and ankle. Other options include shoe modifications, cortisone injections,and physical therapy. If conservative management fails to relieve the symptoms, surgical decompression of the entrapped nerve can be performed...
July 2006: Clinics in Podiatric Medicine and Surgery
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