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Knee Surgery & related Research

Kyung Tae Kim, Song Lee, Jung Soo Lee, Min Su Kang, Ki Hyuk Koo
Purpose: To evaluate the long-term clinical results and survivorship of unicompartmental knee arthroplasty (UKA) in patients younger than 60 years of age. Materials and Methods: One hundred and six cases of medial UKA with a minimum follow-up of 10 years were selected for this study. There were 80 patients and the preoperative diagnosis was osteoarthritis in all cases. The mean age of the patients was 54.2 years and the mean duration of follow-up was 12.1 years...
January 4, 2018: Knee Surgery & related Research
Seung Min Ryu, Jae Woo Park, Ho Dong Na, Oog Jin Shon
Purpose: The purpose of this study is to compare the clinical and radiographic outcomes of high tibial osteotomy (HTO) and unicompartmental arthroplasty (UKA) in advanced medial compartment arthritis accompanied by kissing lesions in relatively young patients. Materials and Methods: Forty-five patients were divided into the HTO (n=23) and UKA (n=22) groups. Clinically, we evaluated the Lysholm knee scoring scale, visual analogue scale, Hospital for Special Surgery, and Western Ontario and McMaster Universities Osteoarthritis index scores preoperatively, 6 and 12 months postoperatively, and at the final follow-up...
January 4, 2018: Knee Surgery & related Research
Young Chan Kim, Jae-Hyuk Yang, Hyun Jung Kim, Tulyapruek Tawonsawatruk, Yong Suk Chang, Jong Seong Lee, Nikhil N Bhandare, Ki Seong Kim, Giorgio D G Delgado, Kyung Wook Nha
Purpose: The purpose of this review is to compare the clinical and radiological outcomes between open and closed wedge distal femoral varus osteotomy (DFO). Methods: A literature search of online databases (MEDLINE, EMBASE, and Cochrane Library database) was made in addition to manual search of major orthopedic journals. Data were searched from the time period of January 1990 to October 2016. A modified Coleman Methodology Score system was used to assess the methodologic quality of the included studies...
January 4, 2018: Knee Surgery & related Research
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
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
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
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
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
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
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
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
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
Kyung Tae Kim
No abstract text is available yet for this article.
March 1, 2018: Knee Surgery & related Research
Vincent Vg An, Mathias van den Broek, Sam Oussedik
A 64-year-old marathon runner presented to our clinic with a history of worsening pain in her left knee. Following magnetic resonance imaging, the diagnosis of subchondral insufficiency fracture of the knee (SIFK) was made. A course of conservative management via bisphosphonates was initiated. The patient successfully recovered and returned to full athletic function, having recently returned to competitive marathon running. This article aims to present this unusual case of lateral compartment SIFK and summarise the literature on this uncommon condition...
December 1, 2017: Knee Surgery & related Research
Bong Keun Park, Hohyoung Lee, Seong-Tae Kim, Min Geun Yoon
A 58-year-old male patient who had developed left knee pain with a history of trauma was referred to our hospital. Physical examination and further examination by magnetic resonance imaging revealed results that closely resemble a horizontal tear of the lateral meniscus and a tear of the medial meniscus. Arthroscopically, we found a cord-like structure originating from the posterior 1/3 portion of the lateral meniscus and passing obliquely toward the medial femoral condyle in front of the posterior cruciate ligament without a tear of the lateral meniscus...
December 1, 2017: Knee Surgery & related Research
Shuji Nakagawa, Yuji Arai, Kunio Hara, Hiroaki Inoue, Manabu Hino, Toshikazu Kubo
We describe a patient who underwent arthroscopic pullout fixation for a posterior cruciate ligament (PCL) avulsion fracture. A 46-year-old female, injured in a fall while riding a motorcycle, was diagnosed with a right knee PCL tibial attachment avulsion fracture and underwent arthroscopic osteosynthesis. A Kirschner wire was drilled to a point just medial to the medial border of the anterior tibial bony bed. A suture wire was folded into a loop and introduced into the posteromedial compartment via the bone tunnel...
December 1, 2017: Knee Surgery & related Research
Hee-June Kim, Hyun-Joo Lee, Ji-Yeon Shin, Young-Seo Choi, Hee-Soo Kyung
Purpose: This study evaluated the efficacy of a smartphone application in the measurement of rotation angles in porcine knees. Materials and Methods: Two K-wires were fixated to the femoral condyle and anterior tibial crest of 10 porcine legs. The angle created between the K-wires with an external rotation force applied was measured on a photograph and defined as the true angle. The same force was applied to the legs placed on a splint with a smartphone attached to the plantar side...
December 1, 2017: Knee Surgery & related Research
Takayuki Furumatsu, Yuya Kodama, Yusuke Kamatsuki, Tomohito Hino, Yoshiki Okazaki, Toshifumi Ozaki
Purpose: Medial meniscus posterior root tears (MMPRT) induce medial meniscus extrusion (MME). However, the time-dependent extent of MME in patients suffering from the MMPRT remains unclear. This study evaluated the extent of MME after painful popping events that occurred at the onset of the MMPRT. Materials and Methods: Thirty-five patients who had an episode of posteromedial painful popping were investigated. All the patients were diagnosed as having an MMPRT by magnetic resonance imaging (MRI) within 12 months after painful popping...
December 1, 2017: Knee Surgery & related Research
Ki-Tae Kwon, Kye-Young Han, Woon-Sang Lee, Do-Hoon Kim
Purpose: To evaluate clinical and radiological outcome of the full cementation technique in revision total knee arthroplasty (TKA) using a constrained condylar knee (CCK) prosthesis. Materials and Methods: Between January 2008 and March 2012, 18 cases (16 patients) of fully cemented revision TKA were performed using a CCK prosthesis. Fifteen cases of aseptic loosening (13 patients) and 3 cases of infection were included. There were 2 males and 14 females with a mean age of 76...
December 1, 2017: Knee Surgery & related Research
Jin-Hyeok Seo, Seung-Suk Seo, Do-Hun Kim, Byung-Yoon Park, Chan-Ho Park, Ok-Gul Kim
Purpose: We compared adductor canal block (ACB) alone and a combination of ACB and sciatic nerve block (SNB) to control early postoperative pain after total knee arthroplasty. Materials and Methods: One hundred patients received continuous ACB alone (group A), and another 100 patients received continuous ACB and single popliteal SNB (group B). Pain was evaluated at rest and 45° knee flexion using the numeric rating scale (NRS). The number of times the patient pressed the intravenous patient-controlled analgesia (PCA) button, total PCA volume infused, and the total dosage of additional analgesics were evaluated...
December 1, 2017: Knee Surgery & related Research
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