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Knee Surgery & related Research

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https://www.readbyqxmd.com/read/29983008/intra-articular-injection-of-bone-marrow-derived-mesenchymal-stem-cells-leading-to-better-clinical-outcomes-without-difference-in-mri-outcomes-from-baseline-in-patients-with-knee-osteoarthritis
#1
Young-Soo Shin, Jung-Ro Yoon, Hee-Sun Kim, Seon-Heui Lee
Purpose: Bone marrow (BM) is frequently used as a source of mesenchymal stem cells (MSCs) because they have a high potential for differentiation. However, it is unclear whether BM-derived MSCs lead to better clinical and magnetic resonance imaging (MRI) outcomes postoperatively. Materials and Methods: This meta-analysis compared the clinical and MRI outcomes in patients with knee osteoarthritis (OA) treated with BM-derived MSCs. Eight studies comparing the clinical and MRI outcomes assessed with various measurement tools in patients with knee OA treated with BM-derived MSCs were included...
July 6, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29715716/the-learning-curve-for-biplane-medial-open-wedge-high-tibial-osteotomy-in-100-consecutive-cases-assessed-using-the-cumulative-summation-method
#2
Do Kyung Lee, Kwang Kyoun Kim, Chang Uk Ham, Seok Tae Yun, Byung Kag Kim, Kwang Jun Oh
Purpose: The purpose of this study was to investigate whether surgical experience could improve surgical competency in medial open wedge high tibial osteotomy (MOWHTO). Materials and Methods: One hundred consecutive cases of MOWHTO were performed with preoperative planning using the Miniaci method. Surgical errors were defined as under- or overcorrection, excessive posterior slope change, or the presence of a lateral hinge fracture. Each of these treatment failures was separately evaluated using the cumulative summation test for learning curve (LC-CUSUM)...
April 30, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29715713/femoral-periprosthetic-fractures-after-total-knee-arthroplasty-new-surgically-oriented-classification-with-a-review-of-current-treatments
#3
REVIEW
Seung Joon Rhee, Jae Young Cho, Yoon Young Choi, Takeshi Sawaguchi, Jeung Tak Suh
Purpose: As the number of total knee arthroplasties (TKAs) increases, the incidence of femoral periprosthetic fractures after TKA is also increasing. This review aimed to suggest a new surgically oriented classification system for femoral periprosthetic fractures. Methods: We investigated the classifications, and current treatment trends for femoral periprosthetic fractures after TKA by means of a thorough review of the relevant literature. Results: Numerous studies reported good results of surgical treatment with modern fixatives including locking compression plates and retrograde intramedullary nails...
April 30, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29843201/comparison-of-revision-rates-due-to-aseptic-loosening-between-high-flex-and-conventional-knee-prostheses
#4
Young-Joon Choi, Ki Won Lee, Jung-Ki Ha, Joo-Yul Bae, Suk Kyu Lee, Sang-Bum Kim, Dong-Kyo Seo
Purpose: The purpose was to evaluate and compare the revision rate due to aseptic loosening between a high-flex prosthesis and a conventional prosthesis. Materials and Methods: Two thousand seventy-eight knees (1,377 patients) with at least 2 years of follow-up after total knee arthroplasty were reviewed. Two types of implants were selected (LPS-Flex and LPS, Zimmer) to compare revision and survival rates and sites of loosened prosthesis component. Results: The revision rate of the LPS-Flex (4...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29843200/safety-and-efficacy-of-6-2-mm-patellar-button-in-resurfacing-less-than-20-mm-thin-patella-a-matched-pair-analysis
#5
Anoop Jhurani, Piyush Agarwal, Mukesh Aswal, Purvi Saxena, Nidhi Singh
Purpose: Restoring the native patellar thickness after patellar resurfacing provides optimal function of the knee after arthroplasty and minimises complications related to the patellofemoral articulation. The aim of this study was to assess the usefulness of a thin patellar button (6.2 mm) in patients with a patella thickness of less than 20 mm during total knee arthroplasty. Materials and Methods: This is a retrospective case control study. A total of 54 female patients with an intraoperative patellar thickness of <20 mm, resurfaced with a patellar button of 6...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29843199/does-adductor-canal-block-have-a-synergistic-effect-with-local-infiltration-analgesia-for-enhancing-ambulation-and-improving-analgesia-after-total-knee-arthroplasty
#6
Wirinaree Kampitak, Aree Tanavalee, Srihatach Ngarmukos, Chavarin Amarase, Rawiwan Apihansakorn, Pannika Vorapalux
Purpose: We compared a single-injection adductor canal block (ACB) with or without local infiltration analgesia (LIA) for accelerating functional recovery and reducing postoperative pain after total knee arthroplasty (TKA). Materials and Methods: Sixty-two patients undergoing TKA with simple spinal analgesia and ACB were randomized to receive either LIA (group A+L) or placebo LIA (group A). Postoperative visual analog scale (VAS) score for pain, Timed Up and Go (TUG) test and quadriceps strength, total dosage of rescue analgesia, time to first rescue analgesia, and adverse events were serially evaluated from postoperative day 1 to 3 months...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29843198/intraoperative-graft-isometry-in-anatomic-single-bundle-anterior-cruciate-ligament-reconstruction
#7
You Keun Kim, Jae Doo Yoo, Sang Woo Kim, Sang Hoon Park, Joon Hee Cho, Hyung Mook Lim
Purpose: Little is known about the isometry of anatomic single-bundle anterior cruciate ligament (ACL) tunnel positions in vivo although it is closely related to graft tension throughout the range of motion. The purpose of this study was to evaluate intraoperative graft isometry in anatomic single-bundle ACL reconstruction in vivo . Materials and Methods: Graft length changes were assessed before bio-screw fixation in the tibial tunnel by pulling the graft with tensions of 20 lbs and 30 lbs in full extension at flexion angles of 30°, 60°, 90°, and 120°...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29843197/two-stage-reimplantation-in-infected-total-knee-arthroplasty
#8
REVIEW
Yong Seuk Lee, Antonia F Chen
Two-stage reimplantation is considered the gold standard for the management of periprosthetic joint infection. The first stage involves the removal of the prosthesis, followed by extensive debridement of all nonviable tissues, synovectomy, irrigation, and reaming of the medullary canals. Once the joint has been prepared, antibiotic-impregnated cement beads and/or spacer are inserted. Antibiotic-impregnated spacers are now more commonly used, and an increasing number of orthopaedic surgeons are using articulating spacers if indicated...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29843196/a-comparison-of-results-after-anterior-cruciate-ligament-reconstruction-in-over-40-and-under-40-years-of-age-a-meta-analysis
#9
REVIEW
Kun-Tae Kim, Hyun-Jung Kim, Hyang-Im Lee, Young-Jin Park, Dong-Geun Kang, Jun-Ill Yoo, Dong-Kyu Moon, Sung-Hee Cho, Sun-Chul Hwang
Purpose: Anterior cruciate ligament (ACL) injury is one of the most common injuries that occur in the knee, and ACL reconstruction (ACLR) is commonly performed for preventing aggravation of degenerative changes and restoring of knee stability in young, athletic patients. This meta-analysis has a purpose of evaluating the clinical and arthrometrical outcomes of ACLR in a group of middle age patients (40 years and older) and comparing with patients under 40 years of age. Methods: MEDLINE, EMBASE, the Cochrane Central Register of Controlled Trials, Web of Science, and SCOPUS electronic databases were searched for relevant articles comparing the outcomes of ACLR between younger and older than 40 years of age until December 2016...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29843195/anterior-cruciate-ligament-reconstruction-the-long-road-from-science-to-clinical-relevance
#10
EDITORIAL
Matthieu Ollivier
No abstract text is available yet for this article.
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29715715/treatment-of-recurrent-hemarthrosis-after-total-knee-arthroplasty
#11
Ju-Hyung Yoo, Hyun-Cheol Oh, Sang-Hoon Park, Sanghyeon Lee, Yunjae Lee, Seong-Hun Kim
Purpose: The purpose of this study is to evaluate the incidence and treatment of recurrent hemarthrosis after total knee replacement (TKR). Materials and Methods: Among a total of 5,510 patients who underwent TKR from March 2000 to October 2016, patients who had two or more bleeding 2 weeks after surgery were studied. Conservative treatments were performed for all cases with symptoms. In patients who did not respond to conservative treatment several times, embolization was performed...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29715714/a-report-of-two-cases-of-adventitial-cystic-disease-of-the-popliteal-artery
#12
Doo Jae Lee, Hyun Oh Park, Ha Nee Jang, Ki Nyun Kim, Jun Ho Yang, Seong Ho Moon, Joung Hun Byun, Sung Hwan Kim, Jun Young Choi, In Seok Jang, Jong Woo Kim, Chung Eun Lee
Two patients were admitted to our department because of recent aggravation of claudication in the leg, which was exacerbated by walking. They were diagnosed as having a Baker cyst or acute thrombosis in the popliteal fossa at another hospital. There was no evidence of ischemia, and the ankle brachial index was normal. Computed tomography and magnetic resonance imaging were performed, revealing a cystic mass of the popliteal artery (PA). Intraoperatively, the cystic lesion was found within the adventitia of the PA; based on the biopsy findings, both patients were diagnosed as having adventitial cystic disease of the PA...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29715712/back-out-of-locking-pin-with-hinge-fracture-after-high-tibial-osteotomy
#13
Shuhei Otsuki, Tomohiko Murakami, Rei Morikura, Kosuke Nakagawa, Yoshinori Okamoto, Masashi Neo
Low-profile fixation devices for medial opening wedge high tibial osteotomy (OWHTO) were developed in order to avoid skin irritation and additional invasion. However, the low-profile system is associated with additional risks. We report three cases of locking pin back out with the low-profile locking plate system for medial OWHTO.
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29554719/femoral-footprint-for-anatomical-single-bundle-anterior-cruciate-ligament-reconstruction-a-cadaveric-study
#14
Young-Mo Kim, Yong-Bum Joo, Ki-Young Lee, Sung-Jin Hwang
Purpose: To identify the femoral footprint of the anterior cruciate ligament (ACL) in Koreans. Materials and Methods: Eighteen embalmed cadaveric knees (mean age, 70 years) were examined. First, the shape of the ACL was determined macroscopically. After the ACL femoral footprint was defined, the ACL was cut from the femur and a Kirschner wire was inserted into the center of the ACL, and the position was verified with a C-arm. The position was quantified on the C-arm field using the quadrant method...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29554718/efficacy-of-taurolidine-irrigation-in-primary-total-knee-arthroplasty
#15
Young Ha Woo, Ju Seon Jeong, Ok Geol Kim, In Seung Lee
Purpose: Taurolidine is an antimicrobial agent that was originally used in the local treatment of peritonitis. The aim of this study was to evaluate the efficacy of taurolidine irrigation in primary total knee arthroplasty (TKA). Materials and Methods: All patients who underwent TKA at our institute from January 2015 to March 2017 were eligible. There were 300 patients in the taurolidine irrigation group and 300 patients in the control group. The patients in the taurolidine irrigation group were irrigated after implantation with a mix of 250 mL of taurolidine and 750 mL of normal saline...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29554717/diagnostic-tools-for-acute-anterior-cruciate-ligament-injury-gnrb-lachman-test-and-telos
#16
Seung Min Ryu, Ho Dong Na, Oog Jin Shon
Purpose: The purpose of this study is to compare the accuracy of the GNRB arthrometer (Genourob), Lachman test, and Telos device (GmbH) in acute anterior cruciate ligament (ACL) injuries and to evaluate the accuracy of each diagnostic tool according to the length of time from injury to examination. Materials and Methods: From September 2015 to September 2016, 40 cases of complete ACL rupture were reviewed. We divided the time from injury to examination into three periods of 10 days each and analyzed the diagnostic tools according to the time frame...
June 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29554721/mesenchymal-stem-cells-isolated-from-the-anterior-cruciate-ligament-characterization-and-comparison-of-cells-from-young-and-old-donors
#17
Patrick Prager, Manuela Kunz, Regina Ebert, Ludger Klein-Hitpass, Jakob Sieker, Thomas Barthel, Franz Jakob, Christian Konrads, Andre Steinert
Purpose: Mesenchymal stem cells (MSCs) isolated from the anterior cruciate ligament (ACL) share multiple characteristics of bone marrow-derived mesenchymal stem cells (BMSCs), allowing their use for regenerative therapies. Injuries to the ACL can affect people of all ages. This study assesses whether the regenerative potential of ACL-derived MSCs (ACL-MSCs) from old donors is as high as the potential of ACL-MSCs from young donors. Materials and Methods: ACL-MSCs were isolated from ACL tissues obtained from young and old donors at the time of ACL reconstruction or arthroplasty...
March 19, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29554720/infrapatellar-fat-pad-derived-stem-cell-based-regenerative-strategies-in-orthopedic-surgery
#18
REVIEW
Pinar Yilgor Huri, Seren Hamsici, Emre Ergene, Gazi Huri, Mahmut Nedim Doral
Infrapatellar fat pad is a densely vascularized and innervated extrasynovial tissue that fills the anterior knee compartment. It plays a role in knee biomechanics as well as constitutes a source of stem cells for regeneration after knee injury. Infrapatellar fat pad-derived stem cells (IPFP-ASCs) possess enhanced and age-independent differentiation capacity as compared to other stem cells, which makes them a very promising candidate in stem cell-based regenerative therapy. The aims of this review are to outline the latest advances and potential trends in using IPFP-ASCs and to emphasize the advantages over other sources of stem cells for applications in orthopedic surgery...
March 19, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29554716/staged-treatment-of-bicondylar-tibial-plateau-fracture-schatzker-type-v-or-vi-using-temporary-external-fixator-correlation-between-clinical-and-radiological-outcomes
#19
Seung Min Ryu, Han Seok Yang, Oog Jin Shon
Purpose: This study is to investigate clinical and radiological results of staged treatment using a temporary external fixator in bicondylar tibial plateau fractures (TPFs) and to evaluate correlation between prognostic factors and postoperative clinical outcomes. Materials and Methods: Twenty-four bicondylar TPF patients were selected. All patients were operated by a temporary external fixator first and then open reduction and internal fixation with dual plating...
March 19, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29482309/serial-radiographs-showing-progression-of-a-patellar-stress-fracture-and-beneficial-surgical-technique-for-a-displaced-patellar-stress-fracture
#20
Kazuha Kizaki, Fumiharu Yamashita, Noboru Funakoshi
Stress fractures of the patella occurring in athletes are quite rare and only 23 cases have been introduced in English literatures. Stress fractures of the patella are classified into two types: transverse and longitudinal. They are mostly seen in the distal one-third of the patella on a plain lateral radiograph. We present here a 16-year-old female basketball player with a stress fracture of the patella. Her serial radiographs demonstrated progression of the fracture including a lytic cortex lesion, known as the gray cortex sign for early stage stress fractures, in the distal one-third of the patella on plain lateral radiographs...
March 1, 2018: Knee Surgery & related Research
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