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https://www.readbyqxmd.com/read/29134368/-patellofemoral-instability
#1
S F Fucentese
Patellofemoral instability is an extremely limiting pathology in young and active patients. Anatomical reasons for patellar instability, such as high-riding patella, elevated distance from the tibial tuberosity to trochlear groove (TTTG), trochlear dysplasia, insufficient medial patellofemoral ligament (MPFL) and malpositioning of the axes and torsion can lead to chronic patellofemoral instability and must be thoroughly analyzed. The first dislocation can be treated conservatively, with the exception of an osteochondral defect...
November 13, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/29130040/effect-of-computer-navigation-on-accuracy-and-reliability-of-limb-alignment-correction-following-open-wedge-high-tibial-osteotomy-a-meta-analysis
#2
Seung-Beom Han, Hyun Jung Kim, Dae-Hee Lee
Background: It is unclear whether computer navigation can improve the accuracy and reliability of targeted lower limb alignment correction following open-wedge high tibial osteotomy (HTO). This meta-analysis was designed to compare the accuracy and reliability of limb alignment correction between computer navigated and conventional open-wedge HTOs. Methods: Studies that compared postoperative coronal alignment, including mechanical axis (MA) and weight bearing line (WBL) ratio, outliers of alignment correction, and change in tibial posterior slope, following open-wedge HTO performed using computer navigated and conventional methods were included...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29102568/mosaic-osteochondral-autograft-transplantation-versus-bone-marrow-stimulation-technique-as-a-concomitant-procedure-with-opening-wedge-high-tibial-osteotomy-for-spontaneous-osteonecrosis-of-the-medial-femoral-condyle
#3
Ken Kumagai, Yasushi Akamatsu, Hideo Kobayashi, Yoshihiro Kusayama, Tomoyuki Saito
PURPOSE: To evaluate the effects of osteochondral autograft transplantation (OAT) mosaicplasty as a concomitant procedure with opening-wedge valgus high tibial osteotomy (HTO) for spontaneous osteonecrosis of the medial femoral condyle (MFC) on clinical outcomes and cartilage status in comparison with bone marrow stimulation (BMS) by drilling, and to assess the relation between lesion size and postoperative cartilage status. METHODS: Fifty-eight patients with spontaneous osteonecrosis of the MFC were treated with opening-wedge HTO and a concomitant procedure of BMS (28 patients) or OAT (30 patients)...
November 1, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29101660/comparison-of-bone-healing-and-outcomes-between-allogenous-bone-chip-and-hydroxyapatite-chip-grafts-in-open-wedge-high-tibial-osteotomy
#4
O-Sung Lee, Kyung Jae Lee, Yong Seuk Lee
Allogenous bone chips and hydroxyapatite (HA) chips have been known as good options for filling an inevitable void after open wedge high tibial osteotomy (OWHTO). However, there are concerns regarding bone healing after the use of these grafts. The purpose of this study was to compare the bone healing represented by the osteoconductivity and absorbability between allogenous bone chips and HA chips in OWHTO. The outcomes of bone healing of 53 patients who received an allogenous bone chip graft and 41 patients who received an HA chip graft were retrospectively evaluated, and the results were compared between the two groups...
November 3, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29073551/medial-opening-wedge-high-tibial-osteotomy-in-patients-with-posttraumatic-medial-tibial-plateau-bone-defect-a-case-report
#5
Yoon Young Choi, Seung Joon Rhee
INTRODUCTION: Traumatic uncontained bone defect in the knee joint is one of the most serious knee injuries. As the knee joint is the main weight-bearing joint of the body, the problem of weight loading should be addressed while restoring the bone defect. However, no consensus exists regarding the treatment of this injury. PRESENTATION OF CASE: Two patients in separate cases initially sustained traumatic uncontained proximal tibial bone defects secondary to passenger traffic accidents...
October 18, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29063151/correction-to-a-case-series-of-lateral-opening-wedge-high-tibial-osteotomy-for-valgus-malalignment
#6
Brett Collins, Alan Getgood, Abdulaziz Z Alomar, J Robert Giffin, Kevin Willits, Peter J Fowler, Trevor B Birmingham, Robert B Litchfield
Unfortunately, one of the co-author affiliation was incorrect in the original publication of this article. The correct affiliation is given below: Abdulaziz Z. Alomar, King Khalid University Hospital, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
October 23, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29062820/comparison-of-puddu-osteotomy-with-or-without-autologous-bone-grafting-a-prospective-clinical-trial
#7
Marcus Ceregatti Passarelli, José Roberto Tonelli Filho, Felipe Augusto Mendes Brizzi, Gustavo Constantino de Campos, Alessandro Rozim Zorzi, João Batista de Miranda
OBJECTIVES: To test the hypothesis that autologous iliac bone grafts do not enhance clinical results and do not decrease complication rates in patients undergoing medial opening-wedge high tibial osteotomy. METHODS: Forty patients allocated in a randomized, two-armed, double-blinded clinical trial were evaluated between 2007 and 2010. One group received bone graft, and the other group was left without filling the osteotomy defect. The primary outcome was the Knee Society Score...
September 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/29062819/conventional-plate-and-screws-in-medial-opening-wedge-high-tibial-osteotomy-are-they-sufficiently-stable-a-retrospective-study
#8
Rodrigo Salim, Fabricio Fogagnolo, Mauricio Martins Perina, Ugo Messas Rubio, Mauricio Kfuri Junior
OBJECTIVE: Opening-wedge osteotomy of the proximal tibia is a widely performed procedure for treating medial gonarthrosis in active patients and in the presence of varus malalignment of the lower limb. The fixation method is controversial, and the use of conventional implants has been abandoned in favor of implants with more modern locking screws. The aim of the present clinical study was to assess the maintenance of the correction achieved in cases wherein fixation was performed using conventional implants...
September 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/29054952/re-correction-osteotomy-with-osteophyte-graft-for-correction-loss-with-non-union-after-high-tibial-osteotomy
#9
Ryuichi Nakamura, Hitoshi Nishimura, Yasuo Katsuki
A 68-year-old man with right knee varus osteoarthritis was treated by lateral closed-wedge high tibial osteotomy. A correction loss with non-union occurred 6 months after surgery and a re-correction osteotomy was performed. Removing the proximal screws of the lateral plate, a medial opening-wedge re-osteotomy was performed. Arthroscopically harvested osteophytes were used to fill the gap after opening. An additional medial locking plate was installed on the medial side. Finally, the proximal lateral screws were reinserted and locked again...
October 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29051901/fresh-osteochondral-allograft-transplantation-for-spontaneous-osteonecrosis-of-the-knee-a-case-series
#10
Luís E P Tírico, Samuel A Early, Julie C McCauley, William D Bugbee
BACKGROUND: Spontaneous osteonecrosis of the knee (SONK) is a clinical entity identified by acute knee pain usually associated with joint effusion, with radiographic findings of a radiolucent defect on the weightbearing area of the femoral condyle. Conservative treatment is initially undertaken; however, surgical procedures are often necessary. Historically, surgical options have included core decompression, cartilage repair, high tibial osteotomy, or joint arthroplasty. Few studies in the literature have reported the use of fresh osteochondral allograft (OCA) for the treatment of SONK lesions...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29046045/comparative-study-of-clinical-and-radiographic-outcomes-of-high-tibial-osteotomy-in-patients-with-kissing-lesions-and-non-kissing-lesions
#11
Oog-Jin Shon, Sang-Jin Park, Bum-Jin Shim, Dong-Yeol Lee
Purpose: High Outerbridge grade lesions of the articular cartilage have been associated with poor outcomes of high tibial osteotomy (HTO). However, there has been no report on the efficacy of HTO in the presence of kissing lesions. The purpose of this study was to compare clinical and radiographic outcomes of HTO between kissing lesion and non-kissing lesion groups. Materials and Methods: Of the patients with medial compartment osteoarthritis and varus deformity treated with HTO between 2007 and 2012, 21 cases with kissing lesions and 22 cases without kissing lesions were selected...
October 19, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29033262/primary-stability-of-different-plate-positions-and-the-role-of-bone-substitute-in-open-wedge-high-tibial-osteotomy
#12
Ryohei Takeuchi, Jung Woon-Hwa, Hiroyuki Ishikawa, Yuichiro Yamaguchi, Katsunari Osawa, Yasushi Akamatsu, Koichi Kuroda
BACKGROUND: The purpose of this study was to compare the mechanical fixation strengths of anteromedial and medial plate positions in osteotomy, and clarify the effects of bone substitute placement into the osteotomy site. METHODS: Twenty-eight sawbone tibia models were used. Four different models were prepared: Group A, the osteotomy site was open and the plate position was anteromedial; Group B, bone substitutes were inserted into the osteotomy site and the plate position was anteromedial; Group C, the osteotomy site was open and the plate position was medial; and Group D, bone substitutes were inserted into the osteotomy site and the plate position was medial...
October 12, 2017: Knee
https://www.readbyqxmd.com/read/29032860/biomechanical-comparison-of-two-different-locking-plates-for-open-wedge-high-tibial-osteotomy
#13
Nienke van Egmond, Dennis Janssen, Gerjon Hannink, Nico Verdonschot, Albert van Kampen
BACKGROUND: The purpose of this study was to compare the mechanical stability of a relatively thin locking plate (FlexitSystem implant) with a relatively firm locking plate (TomoFix implant), both used for opening wedge high tibial osteotomy. METHODS: Seven fresh frozen paired human cadaveric tibiae were used. The opening wedge high tibial osteotomies in the left tibiae were fixated with the FlexitSystem implant and in the right tibiae with the TomoFix implant. The tibiae were CT-scanned to determine the bone mineral density...
October 9, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29021089/patellofemoral-arthritis-treated-with-resurfacing-implant-clinical-outcome-and-complications-at-a-minimum-two-year-follow-up
#14
Juan Pablo Zicaro, Carlos Yacuzzi, Juan Astoul Bonorino, Lisandro Carbo, Matias Costa-Paz
BACKGROUND: This study evaluated the clinical and radiographic outcomes of a series of patients treated with an anatomic inlay resurfacing implant, with a minimum two-year follow-up. METHODS: Fifteen patients underwent patellofemoral-resurfacing procedures using a HemiCAP Wave Patellofemoral Inlay Resurfacing implant from 2010 to 2013. Clinical outcomes included: Visual Analog Scale (VAS), Lysholm score, Knee Society Score (KSS), and evaluation of Kujala, and Hospital for Special Surgery Patellofemoral score (HSS-PF)...
October 8, 2017: Knee
https://www.readbyqxmd.com/read/28975376/customized-post-operative-alignment-improves-clinical-outcome-following-medial-open-wedge-osteotomy
#15
Lisa Hohloch, Suchung Kim, Julian Mehl, Jörn Zwingmann, Matthias J Feucht, Helge Eberbach, Philipp Niemeyer, Norbert Südkamp, Gerrit Bode
PURPOSE: High tibial osteotomy (HTO) has gained more importance in the treatment of cartilage damage or osteoarthritis of the medial compartment with concurrent varus deformity. Concerning the extent of axis correction, various different views exist. The aim of this study was to evaluate the effect of the size of axis correction on functional outcome in patients undergoing a valgus HTO. METHODS: From 2005 to 2013, 156 patients with an underlying varus deformity and cartilage damages or unicompartimental osteoarthritis of the medial compartment were treated by HTO...
October 3, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28974401/the-failing-medial-compartment-in-the-varus-knee-and-its-association-with-cam-deformity-of-the-hip
#16
Jonathan S Palmer, Antony J Palmer, Luke D Jones, Sujin Kang, Nicholas Bottomley, William M Jackson, A Paul Monk, David J Beard, Kassim Javaid, Sion Glyn-Jones, Andrew J Price
BACKGROUND: Since 2011, the knee service at the Nuffield Orthopaedic Centre has been offering a neutralising medial opening wedge high tibial osteotomy (HTO) to a specific group of patients with genu varum and early knee osteoarthritis. An observation was made concerning this group of patients and the presence of CAM deformity at the hip. The aim of this study is to establish whether or not any association exists between the OA phenotype shared by our HTO group and the incidence of CAM deformity at the hip...
September 30, 2017: Knee
https://www.readbyqxmd.com/read/28966382/role-of-high-tibial-osteotomy-in-cartilage-regeneration-is-correction-of-malalignment-mandatory-for-success
#17
Matthew Dhanaraj Thambiah, Melvin K L Tan, James H P Hui
Malalignment of the knee can cause debilitating symptoms such as pain, resulting in a decline in function and mobility. Surgical options that exist to address this problem include realignment osteotomies and joint replacements. Realignment osteotomies are the more appropriate options in certain patient populations, especially with regard to age and level of activity. Since a high tibial osteotomy (HTO) was first used to manage malalignment of the knee and osteoarthritis, different techniques involving the use of specialized implants have been developed and further refined to good effect...
September 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28966378/patella-height-changes-post-high-tibial-osteotomy
#18
Siew Ghim Gooi, Chloe Xiao Yun Chan, Melvin Kian Loong Tan, Andrew Kean Seng Lim, Kandiah Satkunanantham, James Hoi Po Hui
BACKGROUND: Medial opening wedge high tibial osteotomy (HTO) is a well-described treatment in early medial compartmental osteoarthritis of the knee. However, two undesirable sequelae may follow -patella baja and changes in the posterior tibial slope (TS). MATERIALS AND METHODS: We conducted a retrospective study in patients who underwent HTO in our center between September 2009 and February 2017. Preoperative and 6-week postoperative long-leg weight bearing films and lateral knee radiographs were assessed...
September 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28964920/return-to-sports-and-quality-of-life-after-high-tibial-osteotomy-in-patients-under-60-years-of-age
#19
C Bastard, G Mirouse, D Potage, H Silbert, F Roubineau, P Hernigou, C-H Flouzat-Lachaniette
INTRODUCTION: Since knee osteoarthritis is unicompartmental in most cases, a knee osteotomy is the most logical solution to limit degeneration of the arthritic compartment, thereby delaying knee arthroplasty. Younger patients have high functional demands. The purpose of this study was to evaluate the return to sports and quality of life after high tibial osteotomy (HTO) in athletic patients less than 60 years of age. The hypothesis was that patients can return to sports within 1 year of HTO...
September 28, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28963154/revision-total-knee-arthroplasty-for-failed-high-tibial-osteotomy-and-unicompartmental-knee-arthroplasty-have-similar-patient-reported-outcome-measures-in-a-two-year-follow-up-study
#20
J B T Lim, H C Chong, H N Pang, K J D Tay, S L Chia, N N Lo, S J Yeo
AIMS: Little is known about the relative outcomes of revision of unicompartmental knee arthroplasty (UKA) and high tibial osteotomy (HTO) to total knee arthroplasty (TKA). The aim of this study is to compare the outcomes of revision surgery for the two procedures in terms of complications, re-revision and patient-reported outcome measures (PROMs) at a minimum of two years follow-up. PATIENTS AND METHODS: This study was a retrospective review of data from an institutional arthroplasty registry for cases performed between 2001 and 2014...
October 2017: Bone & Joint Journal
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