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https://www.readbyqxmd.com/read/28633148/clinical-and-functional-results-of-119-patients-with-knee-dislocations
#1
Nicholas R Scarcella, Douglas S Weinberg, Stephen Bowen, Heather A Vallier
OBJECTIVES: To describe clinical results and functional outcomes of knee dislocations treated with a consistent strategy within our institution. DESIGN: Retrospective case series. SETTING: Level 1 trauma center. PATIENTS: One hundred nineteen patients were treated at one institution between 2000 and 2014 for knee dislocation. MAIN OUTCOME MEASUREMENTS: Knee range of motion, functional instability, and complications were recorded...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28624557/arthroscopic-lateral-retinacular-release-medial-retinacular-plication-and-partial-medial-tibial-tubercle-transfer-for-recurrent-patellar-dislocation
#2
Song Chen, Yiqin Zhou, Qirong Qian, Yuli Wu, Peiliang Fu, Haishan Wu
OBJECTIVE: To assess the efficacy of a therapeutic protocol composed of arthroscopic lateral retinacular release, medial retinacular plication, and partial medial tibial tuberosity transfer for patients with recurrent patellar dislocation. METHOD: 71 patients, 11 males and 60 females and a total of 77 knees, with recurrent dislocation of the patella were enrolled between 1998 - 2012. The average age of the patients was 19.5 years and 67 of them had previous knee trauma history...
June 14, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28614283/recurrent-patellar-instability-implications-of-preoperative-patellar-crepitation-on-the-status-of-the-patellofemoral-articular-cartilage
#3
Scott J Luhmann, June C Smith, Mario Schootman, Nandan Prasad
BACKGROUND: The purpose of the study was to quantify the frequency, severity, and location of patellofemoral (PF) articular cartilage changes recurrent patellar instability treated surgically in patients with preoperative clinical patellar crepitation. METHODS: A single-surgeon database was queried for all knees with recurrent patellar instability between 3/2000 and 6/2012 (n=214). Only knees which underwent knee arthroscopy during the surgical treatment were included (n=148)...
June 13, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28594688/treatment-of-the-lower-extremity-contracture-deformities
#4
Harold J P van Bosse, Eva Pontén, Akifusa Wada, Olga E Agranovich, Bartłomiej Kowalczyk, Ehud Lebel, Hakan Şenaran, Denis V Derevianko, Maxim A Vavilov, Ekaterina V Petrova, Dmitry B Barsukov, Sergey F Batkin, Sharon Eylon, Vladimir M Kenis, Yulia V Stepanova, Dmitry S Buklaev, Guney Yilmaz, Oksana Köse, Svetlana I Trofimova, Fatih Durgut
Lower extremity deformities of patients with arthrogryposis multiplex congenita present a wide spectrum of severity and deformity combinations. Treatment goals range from merely ensuring comfortable seating and shoe wear, to fully independent and active ambulation, but the overarching intention is to help realize the patient's greatest potential for independence and function. Treatment of hip and knee contractures and dislocations has become more interventional, whereas treatment of foot deformities has paradoxically become much less surgical...
July 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28592075/-influence-of-tibial-component-slope-on-short-term-clinical-outcome-for-oxford-unicompartmental-knee-arthroplasty
#5
L Y Ma, W S Guo, Q D Zhang
Objective: To investigate the effects of tibial component slope change after microplasty (MP) Oxford unicompartmental knee arthroplasty (UKA) on short-term clinical outcome. Methods: A total of 116 patients(128 UKAs)underwent UKA in Department of Orthopaedic Surgery of China-Japan Friendship Hospital between January 2014 and December 2015 were retrospectively reviewed. Totally 100 patients (108 UKAs) were finally included in the study. There were 31 males and 69 females, aging from 47 to 90 years (mean 67.2 years)...
June 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28592073/-influence-of-patellofemoral-joint-degeneration-on-outcome-of-medial-unicompartmental-knee-arthroplasty
#6
B Y Xu, B C Ji, W T Guo, W B Mu, L Cao
Objective: To evaluate the influence of patellofemoral joint degeneration and pre-operative pain location on the outcome of medial Oxford unicompartmental knee arthroplasty (UKA). Methods: A total of 58 patients (58 knees) with medial Oxford UKA had been performed for medial osteoarthritis from March 2013 to July 2014 in Department of Orthopaedic Surgery at First Teaching Hospital of Xinjiang Medical University were retrospective reviewed. There were 24 males and 34 females, the age from 43 to 87 years with the mean age was 68...
June 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28589159/demographics-and-injuries-associated-with-knee-dislocation-a-prospective-review-of-303-patients
#7
Gilbert Moatshe, Grant J Dornan, Sverre Løken, Tom C Ludvigsen, Robert F LaPrade, Lars Engebretsen
BACKGROUND: Information on the incidence, injury mechanisms, ligament injury patterns, and associated injuries of knee dislocations is lacking in the literature. There is a need to characterize ligament injury patterns and associated injuries in knee dislocations to avoid missing common associated diagnoses and to plan surgical treatment. PURPOSE: To evaluate patient demographics, ligament injury patterns and associated injury patterns, and associated injuries in patients with knee dislocation...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28585997/diagnosis-and-management-of-traumatic-patellar-instability-in-the-pediatric-patient
#8
Steven F DeFroda, Joseph A Gil, Alex Boulos, Aristides I Cruz
Instability of the patella is a common cause of knee pain and dysfunction in pediatric and adolescent patients and can be due to several factors. Although some patients will recall a specific traumatic event others may not, requiring the diagnosis to be made on the basis of physical examination and imaging. Congenital dislocation and connective tissue disorders should also be considered, even in the setting of trauma. There are radiographic parameters that may identify causes of instability such as trochlear and patellar abnormalities, and magnetic resonance imaging can identify signs of trauma such as bony edema, loose osteochondral fragments, and increased tibial tubercle-trochlear groove distance...
June 6, 2017: Orthopedics
https://www.readbyqxmd.com/read/28580251/multiligament-reconstruction-of-the-knee-in-the-setting-of-knee-dislocation-with-a-medial-sided-injury
#9
Marcio B Ferrari, Jorge Chahla, Justin J Mitchell, Gilbert Moatshe, Jacob D Mikula, Daniel Cole Marchetti, Robert F LaPrade
Multiple ligament knee injuries are complex pathologies that often result from traumatic knee dislocations. Both a high level of suspicion and a thorough clinical and radiographic examination are mandatory to diagnose and identify all injured structures. Reconstruction of all injured ligaments is recommended to aid in early mobilization and to avoid joint stiffness or graft failure. For knee dislocations involving injury to the anterior cruciate ligament, posterior cruciate ligament, and medial-sided structures, a repair and augmentation of the medial collateral ligament, together with an anatomic reconstruction of the anterior cruciate ligament and double-bundle posterior cruciate ligament, is recommended...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28580243/reconstruction-of-the-popliteomeniscal-fascicles-for-treatment-of-recurrent-subluxation-of-the-lateral-meniscus
#10
Jun Suganuma, Yutaka Inoue, Hideaki Tani, Tadashi Sugiki, Tomoki Sassa, Reo Shibata
Recurrent subluxation of the lateral meniscus is characterized by episodes of mechanical locking of the knee joint. To completely preclude the posterior segment of the lateral meniscus from undergoing anterior dislocation during deep knee flexion, the structures to which it is attached need to be relatively taut. The posterosuperior popliteomeniscal fascicle retains its tension during deep knee flexion; therefore, reconstruction of the posterosuperior and anteroinferior popliteomeniscal fascicles was performed with an autograft harvested from the iliotibial band...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28573968/arthroscopic-assisted-retrograde-mosaicplasty-for-an-osteochondral-defect-of-the-femoral-head-without-performing-surgical-hip-dislocation
#11
Onur Kocadal, Budak Akman, Melih Güven, Uğur Şaylı
Osteochondral autograft transplantation (mosaicplasty) for the osteochondral defects of the femoral head is generally performed with safe dislocation of the hip joint. Here, we present a 27-year-old male patient who had a symptomatic osteochondral defect of the femoral head and underwent mosaicplasty applied by hip arthroscopy without surgical hip dislocation. The preoperative radiological evaluation showed a focal osteochondral defect on the weight-bearing surface of the femoral head. With the assistance of hip arthroscopy, the defect area was reconstructed with osteochondral plug, which was taken from the ipsilateral knee, inserted in a retrograde fashion, and positioned with the spherical surface of the femoral head cartilage under fluoroscopic and arthroscopic control...
2017: SICOT-J
https://www.readbyqxmd.com/read/28571920/mobile-bearing-medial-unicompartmental-knee-arthroplasty-in-patients-whose-lifestyles-involve-high-degrees-of-knee-flexion-a-10-14year-follow-up-study
#12
Won Sik Choy, Kwang Won Lee, Ha Yong Kim, Kap Jung Kim, Young Sub Chun, Dae Suk Yang
BACKGROUND: Because Asian populations have different lifestyles, such as squatting and sitting on the floor, from those of Western populations, it is possible that the clinical results and survival rate of unicompartmental knee arthroplasty (UKA) for Asian patients may be different. This study described outcomes of mobile bearing medial UKA for Korean patients. METHODS: A total of the 164 knees treated with mobile bearing UKAs in 147 patients (14 males and 133 females) were reviewed...
May 29, 2017: Knee
https://www.readbyqxmd.com/read/28567511/trochleoplasty-techniques-provide-good-clinical-results-in-patients-with-trochlear-dysplasia
#13
REVIEW
Umile Giuseppe Longo, Candela Vincenzo, Nicholas Mannering, Mauro Ciuffreda, Giuseppe Salvatore, Alessandra Berton, Vincenzo Denaro
PURPOSE: The aim of this systematic review is to compare the clinical outcomes of patients treated with different trochleoplasty procedures, the rate of complications and recurrence of patellar dislocation. METHODS: A systematic review of the literature was performed, in accord with the PRISMA guidelines. PubMed, MEDLINE, CINAHL, Cochrane, EMBASE and Google Scholar databases were comprehensively searched using the keyword combinations, "Dejour trochleoplasty", "Bereiter Trochleoplasty", "Albee Trochleoplasty", "Recession Trochleoplasty", "Trochlear Dysplasia", "Instability", "Adult", "Clinical Outcome" and "Surgery"...
May 31, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28566786/short-and-mid-term-results-of-revision-total-knee-arthroplasty-with-global-modular-replacement-system
#14
Dariusz Marczak, Jacek Kowalczewski, Jarosław Czubak, Tomasz Okoń, Marek Synder, Marcin Sibiński
BACKGROUND: The original knee megaprostheses with fixed or rotating hinge articulation were custom made and only used for reconstruction of the knee following distal femoral or proximal tibial tumor resections. The aim of the study was to analyze the short- and mid-term results of revision total knee arthroplasty with Global Modular Replacement System (GMRS) used in difficult situations not amenable to reconstruction with standard total knee replacement implants. MATERIALS AND METHODS: Nine patients (9 knees) were treated with this comprehensive modular implant system, with a mean age of 73...
May 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28554493/statistical-shape-modeling-predicts-patellar-bone-geometry-to-enable-stereo-radiographic-kinematic-tracking
#15
Lowell M Smoger, Kevin B Shelburne, Adam J Cyr, Paul J Rullkoetter, Peter J Laz
Complications in the patellofemoral (PF) joint of patients with total knee replacements include patellar subluxation and dislocation, and remain a cause for revision. Kinematic measurements to assess these complications and evaluate implant designs require the accuracy of dynamic stereo-radiographic systems with 3D-2D registration techniques. While tibiofemoral kinematics are typically derived by tracking metallic implants, PF kinematic measurements are difficult as the patellar implant is radiotransparent and a representation of the resected patella bone requires either pre-surgical imaging and precise implant placement or post-surgical imaging...
May 17, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28553452/open-reduction-of-neglected-knee-dislocation-case-report-of-a-rare-injury
#16
K C Kapil Mani, R C Dirgha Raj, Acharya Parimal, Pangeni Bandhu Ram
Old neglected dislocation of knee joint is a rare injury. Any orthopaedic surgeon would have faced only a few cases of unreduced neglected dislocation in his life time practice. We report the case of a 30-year old male patient with one month old unreduced knee dislocation which was managed with open reduction and stabilization with two intra-articular crossed Steinman pins for six weeks, followed by removal of the pins and gradual weight bearing in hinged knee brace. At the end of one year, range of movement of knee joint was 0 to 50 degree with minimal knee pain on walking...
November 2016: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28545177/mid-term-results-of-oxford-medial-unicompartmental-knee-arthroplasty-in-young-asian-patients-less-than-60-years-of-age-a-minimum-5-year-follow-up
#17
Yeong-Joon Kim, Bu-Hwan Kim, Seong-Ho Yoo, Suk-Woong Kang, Chang-Hun Kwack, Moo-Ho Song
Purpose: The purpose of this study was to evaluate the efficacy of unicompartmental knee arthroplasty (UKA) in young active Asian patients by analyzing clinical outcomes, complications and survival rates. Materials and Methods: Eighty-two knees were evaluated with a minimum follow-up of 5 years after Oxford phase 3 UKA in patients less than 60 years of age at the time of surgery. Their mean age was 54.7 years (range, 44 to 59 years). The mean follow-up period was 8...
June 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28541005/a-combined-closing-wedge-distal-femoral-osteotomy-and-medial-reefing-procedure-for-recurrent-patellar-dislocation-with-genu-valgum
#18
Chong Bum Chang, Gautam M Shetty, Jong Seong Lee, Young Chan Kim, Jae Ho Kwon, Kyung Wook Nha
PURPOSE: Recurrent patellar dislocation is often associated with genu valgum. The purpose of this study was to analyze the short-term results of single-incision, closing-wedge distal femoral osteotomy (CWDFO) combined with medial reefing and lateral release for recurrent patellar instability with genu valgum. MATERIALS AND METHODS: Combined CWDFO/medial reefing/lateral release was performed on 10 knees. Clinical evaluation was based on pre- and postoperative Knee Society Score (KSS) and Kujala patellofemoral score...
July 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28528349/high-wear-resistance-of-femoral-components-coated-with-titanium-nitride-a-retrieval-analysis
#19
Christian Fabry, Carmen Zietz, Axel Baumann, Reinhard Ehall, Rainer Bader
PURPOSE: The objective of this study was to evaluate the in vivo wear resistance of cobalt-chromium femoral components coated with titanium nitride (TiN). Our null hypothesis was that the surface damage and the thickness of the TiN coating do not correlate with the time in vivo. METHODS: Twenty-five TiN-coated bicondylar femoral retrievals with a mean implantation period of 30.7 ± 11.7 months were subjected to an objective surface damage analysis with a semi-quantitative assessment method...
May 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28526569/total-joint-replacement-for-neglected-posterior-knee-dislocation-following-septic-arthritis-after-arthroscopy
#20
Yusuf Öztürkmen, Yunus Emre Akman, Ethem Ayhan Ünkar, Erhan Şükür
This report presents the first case of a knee dislocation following septic arthritis after arthroscopy. A 65-year-old woman had an arthroscopy with irrigation and debridement (I&D) of the joint and microfracture for the chondral lesions. She had complaints of postarthroscopic infection but non-steroidal anti-inflammatory medication and local ice compression was recommended. She revisited her physician twice and at the last visit she had a large purulent effusion in her knee. The gram stain of the joint fluid aspirate demonstrated gram-positive cocci and the cultures grew methicilline-sensitive Staphylococcus aureus...
May 16, 2017: Acta Orthopaedica et Traumatologica Turcica
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