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Knee Surgery & related Research

Mehmet Sabri Balik, Adem Erkut, Yılmaz Guvercin, Recep Bedir
A calcification mass was incidentally found in the soft tissue of a patient who had a history of trauma to the extremity during examination. The patient had no symptom. The pathological analysis of the mass revealed it was an early-phase synovial sarcoma (SS). The diagnosis was made before the onset of symptoms and proper surgical intervention was performed. Therefore, in case of a <1 cm lesion clinically suspicious of myositis ossificans, SS should be taken into consideration as a possible diagnosis.
September 2016: Knee Surgery & related Research
Young-Mo Kim, Yong-Bum Joo, Kyu-Woong Yeon, Ki-Young Lee
Anatomical variations of the meniscus are a common anomaly that knee surgeons frequently encounter. However, anomalies of the anterior horn of the lateral meniscus (AHLM) are extremely rare. In this report, we present a newly discovered anomaly of the AHML: an anterolateral meniscofemoral ligament is described with clinical features and radiographic and arthroscopic findings.
September 2016: Knee Surgery & related Research
Rasmus Juul, Jesper Fabrin, Klaus Poulsen, Henrik Morville Schroder
PURPOSE: To report our experience with two-stage revision using a new femoral component (NFC) spacer (Depuy Synthes) as an articulating spacer. MATERIALS AND METHODS: In this retrospective study, we reviewed 22 two-stage revisions that were performed using an NFC spacer in 22 patients suspected of having an infected total knee arthroplasty (TKA) from December 2010 to March 2013. The result was considered successful when eradication of infection was achieved using only one NFC spacer...
September 2016: Knee Surgery & related Research
Shuji Nakagawa, Yuji Arai, Hiroaki Inoue, Hiroyuki Kan, Manabu Hino, Shohei Ichimaru, Kazuya Ikoma, Hiroyoshi Fujiwara, Fumimasa Amaya, Teiji Sawa, Toshikazu Kubo
PURPOSE: This study compared the analgesic effects of local infiltration analgesia (LIA) and femoral nerve block (FNB) after total knee arthroplasty (TKA) and assessed factors associated with analgesia obtained by these two methods. MATERIALS AND METHODS: Study subjects included 66 patients (72 knees) who underwent TKA for osteoarthritis of the knee. Pain visual analogue scale (VAS), the amount of analgesics used, number of days to achieve 90° of flexion of the knee joint, date of initiating parallel-bar walking, range of motion of the knee joint at discharge, and adverse events were investigated...
September 2016: Knee Surgery & related Research
Jae Gyoon Kim, Seung-Yup Lee, Suhwoo Chay, Hong Chul Lim, Ji-Hoon Bae
PURPOSE: The purpose of this study was to evaluate the demographics, clinical features, and outcomes of arthroscopic partial meniscectomy (APM) for isolated medial meniscus horizontal cleavage tears (MMHCTs) in patients under 45 years of age. MATERIALS AND METHODS: We retrospectively reviewed 98 patients (100 knees) under 45 years who underwent APM for MMHCTs. Clinical outcomes were assessed using International Knee Document Committee (IKDC) subjective core, Tegner activity scale, visual analog scale (VAS) pain score, and a question on the symptom relief...
September 2016: Knee Surgery & related Research
Ivan Luis Andrade Araujo, Martha Cavalcante Castro, Carla Daltro, Marcos Almeida Matos
PURPOSE: To verify the association between functional independence (FI) and quality of life (QOL) in patients with knee osteoarthritis. MATERIALS AND METHODS: A cross-sectional study composed of 93 patients with knee osteoarthritis was performed. Osteoarthritis was stratified according the classification of Ahlbach. For evaluation of the patient's overall FI, the Barthel index was used. The patient's QOL was measured by means of the Medical Outcomes Study 36-Item Short Form Health Survey (SF-36) questionnaire...
September 2016: Knee Surgery & related Research
Sin Hyung Park, Joong Hyeon Ahn, Yong Bok Park, Sun Geun Lee, Soo Jae Yim
PURPOSE: To investigate the incidence of thromboembolic events and complications related to bleeding after total knee arthroplasty (TKA) with a mechanical compression device alone or in combination with low-molecular-weight heparin (LMWH). MATERIALS AND METHODS: A total of 489 TKA patients (776 knees) were retrospectively reviewed for the incidence of thromboembolic events and complications related to bleeding. While 233 patients (354 knees) were treated with a mechanical compressive device without LMWH, 256 patients (422 knees) were treated with the mechanical compressive device along with LMWH...
September 2016: Knee Surgery & related Research
Nam Ki Kim, Tae Kyun Kim, Jong Min Kim, Churl Hong Chun
PURPOSE: The purpose of this study is to provide information on the actual status and prevailing trend of prophylaxis for venous thromboembolism (VTE) following total knee arthroplasty (TKA) in South Korea. MATERIALS AND METHODS: The Korean Knee Society (KKS) developed a questionnaire with 6 clinical questions on VTE. The questionnaire was distributed to all members of KKS by both postal and online mail. Participants were asked to supply details on their specialty and to select methods of prophylaxis they employ...
September 2016: Knee Surgery & related Research
Anoop Jhurani, Gautam M Shetty, Vinay Gupta, Purvi Saxena, Nidhi Singh
PURPOSE: Simultaneous bilateral total knee arthroplasty (TKA) is associated with excessive blood loss and morbidity arising from postoperative reduction in hemoglobin (Hb). The purpose of this prospective randomized study was to determine if drains have any effect on blood loss, postoperative reduction in Hb levels and transfusion rates compared to no drainage in simultaneous bilateral TKAs. MATERIALS AND METHODS: Two hundred and thirty patients who underwent simultaneous bilateral TKA by a single surgeon were randomly allotted to drain or no-drain group (n=115 in each group)...
September 2016: Knee Surgery & related Research
Dong Hwi Kim, Gwang Chul Lee, Sang Hong Lee, Chi-Hyoung Pak, Sang Ha Park, Sung Jung
PURPOSE: There are many methods to reduce massive bleeding during total knee arthroplasty (TKA). In our study, tranexamic acid and neutral drainage were used to decrease total blood loss. MATERIALS AND METHODS: The study was performed on 97 TKA patients from March 2012 to January 2013. In the study group, tranexamic acid was administered and neutral drainage was applied. The study group had group I (unilateral, n=29) and group III (bilateral, n=17). The control group had group II (unilateral, n=35) and group IV (bilateral, n=16)...
September 2016: Knee Surgery & related Research
Young-Jun Seol, Jong-Keun Seon, Seung-Hun Lee, Cheng Jin, Jatin Prakash, Yong-Jin Park, Eun-Kyoo Song
PURPOSE: Total knee arthroplasty (TKA) accompanies the risk of bleeding and need for transfusion. There are several methods to reduce postoperative blood loss and blood transfusion. One such method is using tranexamic acid during TKA. The purpose of this study was to confirm whether tranexamic acid reduces postoperative blood loss and blood transfusion after TKA. MATERIALS AND METHODS: A total of 100 TKA patients were included in the study. The tranexamic acid group consisted of 50 patients who received an intravenous injection of tranexamic acid...
September 2016: Knee Surgery & related Research
David Liu, Michael Dan, Sara Martinez Martos, Elaine Beller
A perioperative blood management program is one of a number of important elements for successful patient care in total knee arthroplasty (TKA) and surgeons should be proactive in its application. The aims of blood conservation are to reduce the risk of blood transfusion whilst at the same time maximizing hemoglobin (Hb) in the postoperative period, leading to a positive effect on outcome and cost. An individualized strategy based on patient specific risk factors, anticipated blood loss and comorbidities are useful in achieving this aim...
September 2016: Knee Surgery & related Research
Kang-Il Kim
No abstract text is available yet for this article.
September 2016: Knee Surgery & related Research
Hiroshi Inui, Shuji Taketomi, Ryota Yamagami, Keitaro Tahara, Sakae Tanaka
Snapping pes syndrome is defined as a snapping sensation in the medial knee caused by pes anserinus and rarely occurs. Snapping pes syndrome after unicompartmental knee arthroplasty (UKA) has not been reported yet. We experienced two cases with this syndrome after UKA. Conservative treatment was effective in one case, while surgical excision of the gracilis tendon was necessary to relieve painful snapping in the other case. The main cause of the first case might be posteromedial overhang of the tibial tray that reached up to 5 mm...
June 2016: Knee Surgery & related Research
Dhong Won Lee, Jin Goo Kim, Jeong Ku Ha, Woo Jong Kim
The optimal treatment for combined osteochondritis dissecans (OCD) with considerable bony defect of the lateral femoral condyle (LFC) and torn discoid lateral meniscus is unclear. We present a case of a 15-year-old female who was a gymnast and had a large OCD lesion in the LFC combined with deficiency of the lateral meniscus. The patient underwent the "one-step" technique of osteoperiosteal autologous iliac crest graft and lateral meniscus allograft transplantation after a failure of meniscectomy with repair at another hospital...
June 2016: Knee Surgery & related Research
Seung-Hun Lee, Eun-Kyoo Song, Jong-Keun Seon, Seong-Hwan Woo
Quadriceps tendon rupture is an uncommon injury. This disabling condition is the result of direct or indirect trauma. It requires surgical repair to avoid poor outcomes in cases of neglected or chronic rupture. In most acute cases, simple tendon suture or reinsertion is suitable for an extensor mechanism reconstruction of the knee joint. However, chronic lesions often require a tendon graft or flap reconstruction. We report a case of a 15-year-old male who was diagnosed with a chronic quadriceps rupture with a patellar superior pole fracture...
June 2016: Knee Surgery & related Research
Seung-Yup Lee, Jae-Hyuk Yang, Yong-In Lee, Jung-Ro Yoon
INTRODUCTION: Numerous methods of medial soft tissue release for severe varus deformity during total knee arthroplasty (TKA) have been reported. These include tibial stripping of the superficial medial collateral ligament (MCL), pie-crusting technique, and medial epicondylar osteotomy. However, there are inherent disadvantages in these techniques. Authors hereby present a novel quantitative method: femoral origin release of the medial collateral ligament (FORM). SURGICAL TECHNIQUE: For medial tightness remaining even after the release of the deep MCL and semimembranosus, the FORM is initiated with identification of the femoral insertion area of the MCL with the knee in flexion...
June 2016: Knee Surgery & related Research
Young-Mo Kim, Yong-Bum Joo, Chang-Kyun Noh, Il-Young Park
PURPOSE: There are few studies on biomechanical evaluation of suture points in repair of root tears. The purpose of this study was to determine the point of greatest pullout strength for root tear repair. MATERIALS AND METHODS: A total of 120 fresh porcine medial menisci were obtained. The red-red and red-white zones of the meniscus were divided by two lines designated as lines A and B (groups A and B). Groups A and B were further divided into three groups each by dividing lines A and B into three points: 3, 5, and 7 mm from the meniscal ligament root insertion...
June 2016: Knee Surgery & related Research
Sung-Do Cho, Yoon-Seok Youm, Jong-Hyun Kim, Hye-Yong Cho, Kwang-Ho Kim
PURPOSE: To investigate the patterns of medial meniscus (MM) tears in patients with varus knee osteoarthritis who underwent total knee arthroplasty and analyze the factors that could affect MM tears. MATERIALS AND METHODS: The patients (365 knees, 268 patients) were classified into three groups; group I with MM posterior horn (PH) tear only; group II with MM root tear only; and group III with MMPH plus root tear. The following factors were evaluated: age, gender, body mass index, varus deviation of the mechanical axis, medial proximal tibial angle, posterior tibial slope (PTS), and anterior cruciate ligament (ACL) integrity (normal, degeneration, and tear or absence)...
June 2016: Knee Surgery & related Research
Won Seok Oh, Yong Seuk Lee, Byung Kak Kim, Jae Ang Sim, Beom Koo Lee
PURPOSE: To analyze the contact mechanics of the femoral component and polyethylene of the Low Contact Stress rotating platform (LCS-RP) in nonweight bearing and weight bearing conditions using full flexion lateral radiographs. MATERIALS AND METHODS: From May 2009 to December 2013, 58 knees in 41 patients diagnosed with osteoarthritis and treated with total knee arthroplasty (TKA) were included in this study. TKA was performed using an LCS-RP knee prosthesis. Full flexion lateral radiographs in both weight bearing and nonweight bearing condition were taken at least one month postoperatively (average, 28...
June 2016: Knee Surgery & related Research
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