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https://www.readbyqxmd.com/read/28328823/a-case-report-of-pycnodysostosis-with-atypical-femur-fracture-diagnosed-by-next-generation-sequencing-of-candidate-genes
#1
Hyung Keun Song, Young Bae Sohn, Yong Jun Choi, Yoon-Sok Chung, Ja-Hyun Jang
RATIONALE: Pycnodysostosis is a rare autosomal recessive skeletal dysplasia characterized by short stature, craniofacial dysmorphism, acro-osteolysis, osteosclerosis, and brittle bone with poor healing. Pycnodysostosis results from the deficient activity of cathepsin K, a lysosomal cysteine protease that is encoded by CTSK. PATIENT CONCERNS: We report a Korean adult patient with pycnodysostosis and atypical femur fracture whose diagnosis was confirmed by next-generation sequencing (NGS) of candidate genes...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28328560/surgical-treatment-of-congenital-and-obligatory-dislocation-of-the-patella-in-children
#2
Ronen Sever, Michael Fishkin, Yoram Hemo, Shlomo Wientroub, Moshe Yaniv
BACKGROUND: Congenital (fixed) dislocations and obligatory (habitual) patellar dislocations represent a complex clinical and surgical challenge. Numerous treatment options, offering different perspectives, and surgical solutions are reported in the literature.We implemented the surgical technique principles, originally described by Stanisavljevic, for congenital (fixed) and obligatory (habitual) patellar dislocations, with slight modifications. METHODS: We retrospectively evaluated the results of group of 12 patients (15 knees), operated between the years 2002 and 2013...
March 21, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28327167/optimal-release-timing-of-temporary-drain-clamping-after-total-knee-arthroplasty
#3
Yoon Sang Jeon, Jun Sung Park, Myung Ku Kim
BACKGROUND: Bleeding control is critical after total knee arthroplasty (TKA). The purpose of this study was to evaluate the optimal time to release the clamped drain after TKA. METHODS: We performed unilateral TKA in 120 patients using three methods of drainage. Group A (N = 40) had a 3-hour clamp applied, and group B (N = 40) had a 4-hour clamp applied. Group C (N = 40) underwent conventional negative drainage. We evaluated the drainage volume, as well as the hemodynamic markers, transfusion volume, visual analog scale (VAS) scores, and range of motion (ROM)...
March 21, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28327133/improved-knee-biomechanics-among-patients-reporting-a-good-outcome-in-knee-related-quality-of-life-one-year-after-total-knee-arthroplasty
#4
Josefine E Naili, Per Wretenberg, Viktor Lindgren, Maura D Iversen, Margareta Hedström, Eva W Broström
BACKGROUND: It is not well understood why one in five patients report poor outcomes following knee arthroplasty. This study evaluated changes in knee biomechanics, and perceived pain among patients reporting either a good or a poor outcome in knee-related quality of life after total knee arthroplasty. METHODS: Twenty-eight patients (mean age 66 (SD 7) years) were included in this prospective study. Within one month of knee arthroplasty and one year after surgery, patients underwent three-dimensional (3D) gait analysis, completed the Knee Injury and Osteoarthritis Outcome Score (KOOS), and rated perceived pain using a visual analogue scale...
March 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28326421/nontraumatic-tibial-polyethylene-insert-cone-fracture-in-mobile-bearing-posterior-stabilized-total-knee-arthroplasty
#5
Yohei Tanikake, Koji Hayashi, Munehiro Ogawa, Yusuke Inagaki, Kenji Kawate, Tetsuya Tomita, Yasuhito Tanaka
A 72-year-old male patient underwent mobile-bearing posterior-stabilized total knee arthroplasty for osteoarthritis. He experienced a nontraumatic polyethylene tibial insert cone fracture 27 months after surgery. Scanning electron microscopy of the fracture surface of the tibial insert cone suggested progress of ductile breaking from the posterior toward the anterior of the cone due to repeated longitudinal bending stress, leading to fatigue breaking at the anterior side of the cone, followed by the tibial insert cone fracture at the anterior side of the cone, resulting in fracture at the base of the cone...
December 2016: Arthroplasty Today
https://www.readbyqxmd.com/read/28326407/instability-of-the-proximal-tibiofibular-joint-associated-with-total-knee-arthroplasty
#6
Martin Bédard, Simon Corriveau-Durand
To our knowledge, proximal tibiofibular joint instability has never been reported in a patient with a total knee arthroplasty (TKA). We present the case of a patient with anterolateral proximal tibiofibular joint instability associated with a complex primary TKA. In 2010, a male patient of 47 years was referred for TKA after posttraumatic osteoarthritis. The patient's history includes a fracture of the left lateral tibial plateau in 2008 and removal of osteosynthesis material in 2009. TKA with a lateral metal augment and intramedullary stem was performed in 2010...
September 2016: Arthroplasty Today
https://www.readbyqxmd.com/read/28325693/surgical-technique-and-clinical-outcomes-of-retrograde-osteochondral-autograft-transfer-for-osteochondral-lesions-of-the-tibial-plateau
#7
Hiromitsu Yabumoto, Yasuaki Nakagawa, Shogo Mukai, Takahiko Saji, Takashi Nakamura
PURPOSE: To present the surgical technique, clinical outcomes, and poor prognostic factors of arthroscopic retrograde osteochondral autograft transfer of the tibial plateau. METHODS: Twelve patients (6 men, 6 women; mean age, 38.7 years) with tibial plateau osteochondral lesions underwent surgery. The primary diseases were osteonecrosis in 4 cases, cartilage injuries in 6, and postfractures of the tibial plateau in 2. Clinical outcomes were evaluated preoperatively and postoperatively according to the International Knee Documentation Committee score and the Japanese Orthopaedic Association score...
March 18, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28324151/higher-hamstring-to-quadriceps-isokinetic-strength-ratio-during-the-first-post-operative-months-in-patients-with-quadriceps-tendon-compared-to-hamstring-tendon-graft-following-acl-reconstruction
#8
Felix Fischer, Christian Fink, Elmar Herbst, Christian Hoser, Caroline Hepperger, Cornelia Blank, Peter Gföller
PURPOSE: The aim of this study was to compare isokinetic quadriceps and hamstring muscle strength in patients following anterior cruciate ligament (ACL) reconstruction who received either hamstring (HT) or quadriceps (QT) tendon autografts at two time intervals within the first year after surgery. METHODS: One hundred twenty-four patients, 81 males (age 22.0 ± 6.2 years) and 43 females (age 20.9 ± 8.7 years), participated in this study. ACL reconstruction was performed with either quadriceps tendon autografts (QT; n = 61) or hamstring tendon autografts (HT; n = 63)...
March 21, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28323139/inflammation-and-post-operative-recovery-in-patients-undergoing-total-knee-arthroplasty-secondary-analysis-of-a-randomized-controlled-trial
#9
Anne Langkilde, Thomas Linding Jakobsen, Thomas Quaade Bandholm, Jesper Eugen-Olsen, Thomas Blauenfeldt, Janne Petersen, Ove Andersen
OBJECTIVE: Reduced function persists for many patients after total knee arthroplasty (TKA). Inflammation is part of osteoarthritis' pathophysiology, and surgery induces a marked inflammatory response. We therefore wanted to explore the role of inflammation in long-term recovery after TKA, and thus conducted this secondary analysis of our randomized controlled trial of physical rehabilitation +/- progressive strength training (PST). We aimed to investigate whether A) inflammation is associated with functional performance, knee-extension strength, and knee pain before TKA; B) PST affects inflammation, and the inflammatory state over time; C) baseline or surgery-induced inflammation modifies the effect of rehabilitation +/- PST on change in 6-minute walk test (Δ6MWT); and D) baseline or surgery-induced inflammation is associated with Δ6MWT following TKA...
March 16, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28322717/lengthening-and-deformity-correction-about-the-knee-using-a-magnetic-internal-lengthening-nail
#10
Austin T Fragomen, S Robert Rozbruch
INTRODUCTION: The introduction of the internal lengthening nail (ILN) has changed the treatment of complex malalignment and shortening about the knee. Acute correction of the deformity and gradual lengthening through this osteotomy site has greatly simplified postoperative recovery. This manuscript is a review of the techniques that are currently being used in surgery. METHODS: The article is broken into two sections: distal femur osteotomy and tibia osteotomy. Each is addressed separately since they have different personalities...
2017: SICOT-J
https://www.readbyqxmd.com/read/28321330/ct-venography-after-knee-replacement-surgery-comparison-of-dual-energy-ct-based-monochromatic-imaging-and-single-energy-metal-artifact-reduction-techniques-on-a-320-row-ct-scanner
#11
Masafumi Kidoh, Daisuke Utsunomiya, Seitaro Oda, Takeshi Nakaura, Yoshinori Funama, Hideaki Yuki, Kenichiro Hirata, Masahiro Hatemura, Tomohiro Namimoto, Yasuyuki Yamashita
BACKGROUND: An optimal metal artifact reduction (MAR) technique is needed for a reliable and accurate image-based diagnosis. PURPOSE: Using a 320-row scanner, we compared the dual-energy computed tomography (CT)-based monochromatic and the single-energy metal artifact reduction (SEMAR) techniques for CT venography (CTV) to identify the better imaging method for diagnosing deep vein thrombosis (DVT) in patients who had undergone knee replacement surgery. MATERIAL AND METHODS: Twenty-three consecutive patients with suspected DVT after unilateral knee replacement surgery underwent dual-energy CT (135/80 kVp)...
February 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28320421/effectiveness-of-a-physiotherapist-delivered-cognitive-behavioral-patient-education-for-patients-who-undergoes-operation-for-total-knee-arthroplasty-a-protocol-of-a-randomized-controlled-trial
#12
Sara Birch, Maiken Stilling, Inger Mechlenburg, Torben Bæk Hansen
BACKGROUND: Total Knee Arthroplasty (TKA) is a common and generally effective procedure performed mainly due to advanced osteoarthritis, pain, physical disability and reduced quality of life. However, approximately 20% of the patients respond poorly to the surgery and chronic pain and disability following TKA remains a major health burden for many patients. Among the most well documented and powerful psychological predictors of poor outcome following TKA is pain catastrophizing. Recent research has shown that patients with these thoughts are at higher risk of having persistent pain and lower physical function after the operation than patients with low levels of pain catastrophizing before TKA...
March 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28319584/episode-of-care-characteristics-and-costs-for-hip-and-knee-replacement-surgery-in-hospitals-belonging-to-the-high-value-health-care-collaborative-compared-with-similar-hospitals-in-the-same-health-care-markets
#13
William B Weeks, William J Schoellkopf, David J Ballard, Gary S Kaplan, Brent James, James N Weinstein
BACKGROUND: To inform consumers and restrain health care cost growth, efforts to promote transparency and to reimburse for care episodes are accelerating in the United States. OBJECTIVE: To compare characteristics and costs of 30-day episode of care for hip and knee replacement occurring in High Value Healthcare Collaborative (HVHC)-member hospitals to those occurring in like non-HVHC-member hospitals in the same 15 health care markets before interventions by HVHC members to improve health care value for those interventions...
March 17, 2017: Medical Care
https://www.readbyqxmd.com/read/28319157/subchondral-bone-histology-and-grading-in-osteoarthritis
#14
Olli-Matti Aho, Mikko Finnilä, Jerome Thevenot, Simo Saarakkala, Petri Lehenkari
OBJECTIVE: Osteoarthritis (OA) has often regarded as a disease of articular cartilage only. New evidence has shifted the paradigm towards a system biology approach, where also the surrounding tissue, especially bone is studied more vigorously. However, the histological features of subchondral bone are only poorly characterized in current histological grading scales of OA. The aim of this study is to specifically characterize histological changes occurring in subchondral bone at different stages of OA and propose a simple grading system for them...
2017: PloS One
https://www.readbyqxmd.com/read/28318932/patellar-instability-treated-with-distal-femoral-osteotomy
#15
Ishaan Swarup, Osama Elattar, S Robert Rozbruch
BACKGROUND: Patellar instability can cause significant disability in both pediatric and adult patients, and it is associated with several factors including genu valgum. In this study, we describe the role of a lateral opening wedge distal femoral osteotomy (DFO) combined with lateral retinacular release in addressing genu valgum with associated patellar instability. The rationale for this approach is to medialize the patellar tendon insertion and decrease the Q angle with DFO. METHODS: A consecutive series of patients were studied, and our outcomes of interest included improvements in radiographic measures and patient outcomes...
March 17, 2017: Knee
https://www.readbyqxmd.com/read/28316309/high-resolution-ct-angiogram-for-lower-extremity-vein-mapping
#16
Mark P Wright, Matthew R Smeds, Lonnie Wright, Ahsan T Ali
High-resolution CT angiogram (CTA) has replaced traditional diagnostic angiography as the main preoperative imaging modality for vascular surgery patients. Although the use of CTA is increasing for arterial imaging, it has not been used routinely for vein mapping. The goal of this study was to evaluate the accuracy of CTA for venous anatomy and compare it to a standard venous duplex ultrasound (DUS). When the vein was used for bypass, the quality and size of the vein were evaluated in the operating room. As part of a preoperative workup before lower extremity revascularization, 16 patients underwent a CTA followed by a DUS...
March 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28314891/revision-total-knee-arthroplasty-with-porous-coated-metaphyseal-sleeves-provides-radiographic-ingrowth-and-stable-fixation
#17
Catherine J Fedorka, Antonia F Chen, Michael R Pagnotto, Lawrence S Crossett, Brian A Klatt
PURPOSE: Porous-coated metaphyseal sleeves are designed to fill bone defects and facilitate osseointegration when bone loss in encountered during revision total knee arthroplasty (TKA). The purpose of this study is to evaluate short-term results of porous-coated metaphyseal sleeves with regards to implant fixation and clinical outcomes. METHODS: A retrospective review was conducted on 50 patients (79 sleeves-49 tibial and 30 femoral) who had a press-fit metaphyseal sleeve with revision TKA...
March 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28314886/no-differences-in-subjective-knee-function-between-surgical-techniques-of-anterior-cruciate-ligament-reconstruction-at-2-year-follow-up-a-cohort-study-from-the-swedish-national-knee-ligament-register
#18
Eric Hamrin Senorski, David Sundemo, Christopher D Murawski, Eduard Alentorn-Geli, Volker Musahl, Freddie Fu, Neel Desai, Anders Stålman, Kristian Samuelsson
PURPOSE: The purpose of this study was to investigate how different techniques of single-bundle anterior cruciate ligament (ACL) reconstruction affect subjective knee function via the Knee injury and Osteoarthritis Outcome Score (KOOS) evaluation 2 years after surgery. It was hypothesized that the surgical techniques of single-bundle ACL reconstruction would result in equivalent results with respect to subjective knee function 2 years after surgery. METHODS: This cohort study was based on data from the Swedish National Knee Ligament Register during the 10-year period of 1 January 2005 through 31 December 2014...
March 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28314214/gait-biomechanics-following-lower-extremity-trauma-amputation-vs-reconstruction
#19
Elizabeth Russell Esposito, Daniel J Stinner, John R Fergason, Jason M Wilken
BACKGROUND: Surgical advances have substantially improved outcomes for individuals sustaining traumatic lower extremity injury. Injuries once requiring lower limb amputation are now routinely managed with limb reconstruction surgery. However, comparisons of functional outcomes between the procedures are inconclusive. PURPOSE: To compare gait biomechanics after lower limb reconstruction and transtibial amputation. METHODS: Twenty-four individuals with unilateral lower limb reconstruction wearing a custom ankle-foot orthosis (Intrepid Dynamic Exoskeletal Orthosis), 24 with unilateral, transtibial amputation, and 24 able-bodied control subjects underwent gait analysis at a standardized Froude speed based on leg length...
February 21, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28306737/alcohol-consumption-and-the-risk-of-postoperative-mortality-and-morbidity-after-primary-hip-or-knee-arthroplasty-a-register-based-cohort-study
#20
Torill A Rotevatn, Henrik Bøggild, Christinna R Olesen, Christian Torp-Pedersen, Rikke N Mortensen, Per F Jensen, Charlotte Overgaard
OBJECTIVE: To investigate the implications of low and moderate preoperative alcohol consumption on postoperative mortality and morbidity after primary hip and knee arthroplasty. METHODS: A total of 30,799 patients who underwent primary hip or knee arthroplasty between January 1st, 2005 and October 8th, 2011 with information on preoperative alcohol consumption (0 grams of pure alcohol/week, >0-168 g/week, >168-252 g/week, and >252 g/week) were identified through the Danish Anesthesia Database...
2017: PloS One
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