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Knee Surgery & related Research

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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
#1
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/29715715/treatment-of-recurrent-hemarthrosis-after-total-knee-arthroplasty
#2
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...
April 30, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29715714/a-report-of-two-cases-of-adventitial-cystic-disease-of-the-popliteal-artery
#3
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...
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
#4
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/29715712/back-out-of-locking-pin-with-hinge-fracture-after-high-tibial-osteotomy
#5
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.
April 30, 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
#6
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
#7
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/29554719/femoral-footprint-for-anatomical-single-bundle-anterior-cruciate-ligament-reconstruction-a-cadaveric-study
#8
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...
March 19, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29554718/efficacy-of-taurolidine-irrigation-in-primary-total-knee-arthroplasty
#9
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...
March 19, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29554717/diagnostic-tools-for-acute-anterior-cruciate-ligament-injury-gnrb-lachman-test-and-telos
#10
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...
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
#11
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
#12
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
https://www.readbyqxmd.com/read/29482308/acute-arterial-occlusion-following-primary-total-knee-arthroplasty
#13
Bong-Ju Park, Hong-Man Cho, Ki-Yong An, Hyun-Ju Lee
Acute arterial occlusion is a rare complication following total knee arthroplasty (TKA). This is a report of a case of acute femoral artery occlusion and its sequelae following TKA in a patient with a history of atrial fibrillation. Arterial circulation of the lower limb could not be restored by thrombectomy treatments, and above-knee amputation had to be carried out.
March 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29482307/combined-rotational-alignment-change-after-total-knee-arthroplasty-in-different-tibial-component-designs-implications-for-optimal-tibial-component-rotational-alignment
#14
Seung Joon Rhee, Jae Young Cho, Seung Hyeon Jeung, Kein Boon Poon, Yoon Young Choi, Jeung Tak Suh
Purpose: The rotational alignment of the femoral and tibial components is closely related to the results after total knee arthroplasty (TKA). In this study, we measured the combined rotational alignment change (ΔCR) after TKA and compared the different influence of symmetric and asymmetric tibial component designs on the combined rotational alignment. Materials and Methods: Eighty-four patients (mean age, 67.9 years) were included. A symmetric tibial component was used in 51 knees (group I), whereas an asymmetric tibial component was used in 50 knees (group II)...
March 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29482306/effects-of-femoral-lateral-bowing-on-coronal-alignment-and-component-position-after-total-knee-arthroplasty-a-comparison-of-conventional-and-navigation-assisted-surgery
#15
Chang-Wan Kim, Chang-Rack Lee
Purpose: To evaluate the effects of femoral lateral bowing on coronal alignment after total knee arthroplasty (TKA) and examine whether the use of navigation helps obtain better postoperative coronal alignment and component position. Materials and Methods: Radiological results and outlier rates were compared between the conventional TKA group and the navigation-assisted TKA group, and factors associated with postoperative alignment were evaluated. For clinical assessment, patient-reported outcomes were used...
March 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29482305/relationship-between-lateral-femoral-bowing-and-varus-knee-deformity-based-on-two-dimensional-assessment-of-side-to-side-differences
#16
Myung-Rae Cho, Young Sik Lee, Won-Kee Choi
Purpose: The objective was to evaluate the relationship between side-to-side differences of lateral femoral bowing and varus knee deformity based on two-dimensional (2D) assessment in unilateral total knee arthroplasty (TKA). Materials and Methods: A total of 143 patients with varus knee osteoarthritis who underwent unilateral TKA were enrolled. We evaluated the side-to-side differences of the frontal lower limb alignment by assessing lateral femoral bowing, anatomical medial distal femoral angle, and anatomical medial proximal tibial angle (aMPTA)...
March 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29482304/using-illness-rating-systems-to-predict-discharge-location-following-total-knee-arthroplasty
#17
Sarah Rudasill, Jonathan R Dattilo, Jiabin Liu, Ari Clements, Charles L Nelson, Atul F Kamath
Purpose: Total knee arthroplasty (TKA) is increasing in frequency and cost. Optimization of discharge location may reduce total expenditure while maximizing patient outcomes. Although preoperative illness rating systems-including the American Society for Anesthesiologists Physical Classification System (ASA), severity of illness scoring system (SOI), and Mallampati rating scale (MP)-are associated with patient morbidity and mortality, their predictive value for discharge location, length of stay (LOS), and total costs remains unclear...
March 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29482303/seasonal-influence-on-postoperative-complications-after-total-knee-arthroplasty
#18
Azeem Tariq Malik, Shahid Khan Azmat, Arif Ali, Syed Hamza Mufarrih, Shahryar Noordin
Purpose: This study is aimed at investigating whether inpatient complications and surgical site infections (SSIs) occurred more commonly in patients undergoing total knee arthroplasty (TKA) during the summer season. Materials and Methods: A total of 725 patients who underwent unilateral or bilateral TKA were included in this study. A total of 241 patients (33.2%) underwent TKA between May and August. Our outcomes of interest were the incidence of postoperative complications and length of stay...
March 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29482302/clinical-and-radiological-results-with-second-look-arthroscopic-findings-after-open-wedge-high-tibial-osteotomy-without-arthroscopic-procedures-for-medial-meniscal-root-tears
#19
Hyun Il Lee, Dongjun Park, Jinho Cho
Purpose: To identify the structural integrity of the healing site after medial open wedge high tibial osteotomy (MOWHTO) in patients with a posterior root tear of the medial meniscus (PRTMM) and chondral lesion by second-look arthroscopy and to determine the clinical and radiological findings. Materials and Methods: From August 2010 to June 2016, 52 consecutive patients underwent MOWHTO and arthroscopic examination without a chondral resurfacing procedure and meniscal treatment for PRTMM...
March 1, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29482301/intentionally-increased-flexion-angle-of-the-femoral-component-in-mobile-bearing-unicompartmental-knee-arthroplasty
#20
Kye-Youl Cho, Kang-Il Kim, Sang-Jun Song, Kyu-Jin Kim
Purpose: The purpose of this study was to determine the results of mobile bearing unicompartmental knee arthroplasty (UKA) with an intentionally increased flexion angle of the femoral component in patients requiring high flexion. Materials and Methods: We investigated 45 knees treated by UKA. Clinically, we measured the range of motion (ROM) and the American Knee Society (AKS) score preoperatively and at final follow-up and investigated complications. Radiologically, we measured the flexion angle of the femoral component, the posterior slope angle of the tibial component, the femorotibial angle and mechanical axis of the limb postoperatively...
March 1, 2018: Knee Surgery & related Research
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