Journal of Joint Surgery and Research最新文献

{"title":"Prognostic power of criteria for symptomatic early knee osteoarthritis from a 2-year longitudinal observation of the Iwaki cohort study","authors":"Eiji Sasaki ,&nbsp;Daisuke Chiba ,&nbsp;Seiya Ota ,&nbsp;Yuka Kimura ,&nbsp;Gentaro Kumagai ,&nbsp;Eiichi Tsuda ,&nbsp;Yoshiko Takahashi ,&nbsp;Takuro Iwane ,&nbsp;Yasuyuki Ishibashi","doi":"10.1016/j.jjoisr.2024.06.001","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.06.001","url":null,"abstract":"<div><h3>Purpose</h3><p>This study aimed to investigate whether symptomatic early knee osteoarthritis (EKOA) effectively predicts the incidence of definitive knee osteoarthritis (DKOA) in the general Japanese population.</p></div><div><h3>Methods</h3><p>A total of 133 women from the Japanese Iwaki cohort study were enrolled and followed-up over 2 years in order to calculate the rate of progression of EKOA to DKOA. Weight-bearing anteroposterior bilateral knee radiographs and magnetic resonance imaging (MRI) were conducted at baseline and follow-up. Radiographs were classified according to the Kellgren–Lawrence grade. The presence of cartilage lesion, bone marrow lesions, attrition, cysts, osteophytes, and meniscal lesions was evaluated according to the Whole-Organ Magnetic Resonance Imaging Score (WORMS). Logistic regression analyses were performed to determine the predictive power of EKOA.</p></div><div><h3>Results</h3><p>Of 25 women with EKOA, 15 (60%) progressed to DKOA over 2 years, showing a relative risk (RR) of 1.44 compared with the non-osteoarthritis (non-OA) group (<em>P</em> ​= ​0.120). Logistic regression analysis showed associations of EKOA (<em>P</em> ​= ​0.048) and high body mass index (<em>P</em> ​&lt; ​0.001) with progression to DKOA. Combined EKOA and meniscal lesions increased the RR for osteoarthritis incidence to 2.32 (<em>P</em> ​= ​0.004) compared with the non-OA group. Also, meniscus and bone marrow lesion scores on MRI of the EKOA group maintained high scores over 2 years.</p></div><div><h3>Conclusions</h3><p>The prognostic power of EKOA criteria was confirmed with a RR of 1.44. The combination of symptomatic EKOA criteria and MRI-detected meniscal lesions was a valuable predictor of progression to DKOA over 2 years in women without radiographic abnormalities.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 3","pages":"Pages 111-116"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000136/pdfft?md5=d2d3103c771c3c030ce30917fe9999cf&pid=1-s2.0-S2949705124000136-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141444355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soft tissue balance in total knee arthroplasty: Clinical value of intra-operative measurement","authors":"Tomoyuki Matsumoto ,&nbsp;Naoki Nakano ,&nbsp;Masanori Tsubosaka ,&nbsp;Hirotsugu Muratsu","doi":"10.1016/j.jjoisr.2024.05.001","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.05.001","url":null,"abstract":"<div><h3>Purpose:</h3><p>Considering successful clinical outcomes, accurate osteotomy/implantation and soft tissue balancing are essential in total knee arthroplasty (TKA). However, intra-operative assessment of soft tissue balance remains difficult, and management is left much to the surgeon's subjective feel and experience. The aim of this paper was to review various soft tissue balance assessments and their relationship with pre- and intra-operative factors and clinical outcomes.</p></div><div><h3>Methods:</h3><p>Literature regarding the history of soft tissue balance measurement, various types of measurement tools, theory of recent measurement, influence of various factors on soft tissue balance, and influence of soft tissue balance on clinical outcomes in TKA was reviewed using the PubMed database.</p></div><div><h3>Results:</h3><p>Soft tissue balance measurement has switched from the unphysiological condition, i.e., with assessment between bone cut surfaces and patellar eversion, to the physiological condition, i.e. with femoral component placement and patellofemoral joint reduction. Type of prosthesis, implant design, surgical technique, and pre-operative factors affect intra-operative soft tissue balance. Intra-operative soft tissue balance also affects post-operative range of motion and patient-reported outcome measures.</p></div><div><h3>Conclusions:</h3><p>Intra-operative quantitative soft tissue balance measurement and management with physiological knee condition, which is closely influenced by various pre-operative and intra-operative factors, is important for the achievement of high knee function and patient satisfaction.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 3","pages":"Pages 85-93"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000112/pdfft?md5=fb3ff533ef933a920f183cba4ca6e02a&pid=1-s2.0-S2949705124000112-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141239938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of intravenous and periarticular administration of dexamethasone in total knee arthroplasty","authors":"Hibiki Kakiage ,&nbsp;Kazuhisa Hatayama ,&nbsp;Masanori Terauchi ,&nbsp;Atsufumi Oshima ,&nbsp;Shogo Hashimoto ,&nbsp;Hirotaka Chikuda","doi":"10.1016/j.jjoisr.2024.07.001","DOIUrl":"10.1016/j.jjoisr.2024.07.001","url":null,"abstract":"<div><h3>Purpose</h3><p>Corticosteroids are widely used in total knee arthroplasty (TKA) to ameliorate post-operative pain. This study compared the effects of intravenous administration (IVA) and periarticular injection (PAI) of dexamethasone on pain, nausea, and blood glucose levels following TKA.</p></div><div><h3>Methods</h3><p>An institutional database was used to retrospectively examine two cohorts of patients who had undergone unilateral TKA from August 2018 to September 2020. The IVA group (<em>n</em> ​= ​50) received 10 ​mg dexamethasone 1 ​h before surgery and 24 ​h after surgery. The PAI group (<em>n</em> ​= ​50) received 10 ​mg dexamethasone during surgery. Pain scores at rest and during walking as well as nausea scores were recorded using the 0–10 numerical rating scale after surgery. Fasting blood glucose (FBG) levels were measured post-operatively.</p></div><div><h3>Results</h3><p>A total of 100 patients were enrolled (mean age, 71 years; 86% female). The rest pain score 24 ​h post-operatively was significantly lower in the PAI group than in the IVA group (3.3 <em>vs.</em> 4.3; absolute difference 1.0, 95% confidence interval, 0.4–1.3; <em>P</em> ​= ​0.007). The nausea score did not differ markedly between groups. FBG was significantly higher in the PAI group than in the IVA group in the morning of post-operative Day 1.</p></div><div><h3>Conclusion</h3><p>PAI with dexamethasone was found to control pain more effectively at 24 ​h than IVA. FBG on the morning of post-operative Day 1 was significantly higher in the PAI group. Level of evidence, III; retrospective cohort.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 3","pages":"Pages 136-140"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000203/pdfft?md5=f9c27a1c504f47639d54811f066de18f&pid=1-s2.0-S2949705124000203-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141731746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accuracy of acetabular cup placement in total hip arthroplasty using an augmented reality navigation “pin-less” system: A pilot study","authors":"Tetsuya Kimura ,&nbsp;Tatsuya Tamaki ,&nbsp;Hiroyuki Ogawa","doi":"10.1016/j.jjoisr.2024.06.002","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.06.002","url":null,"abstract":"<div><h3>Purpose</h3><p>Currently, there is limited information regarding the utilization of pin-less augmented reality (AR) assistance in total hip arthroplasty (THA). This preliminary study aimed to evaluate the precision of acetabular cup placement in THA utilizing the AR Navigation “Pin-less” System (Pin-less AR navigation, prototype).</p></div><div><h3>Methods</h3><p>A total of 72 consecutive primary THAs in 58 patients were categorized into two groups: the Pin-less AR navigation group and the conventional group. All THAs were conducted via the direct anterior approach. First, the absolute value of difference between the intra-operative and post-operative angles (<em>absolute difference</em>) was calculated in the Pin-less AR navigation group. Second, the absolute value of error between the post-operative angles and the target angles (<em>absolute target error</em>) was assessed both in the Pin-less AR navigation group and the conventional group.</p></div><div><h3>Results</h3><p>The <em>absolute difference</em> in inclination and anteversion angles was 2.2 ​± ​1.4° and 2.4 ​± ​1.5°, respectively. The <em>absolute target error</em> in the Pin-less AR navigation group versus the conventional group was 1.9 ​± ​1.5° versus 4.2 ​± ​2.7° in inclination (<em>P</em> ​&lt; ​0.001) and 2.3 ​± ​1.5° versus 3.1 ​± ​2.1° in anteversion (<em>P</em> ​= ​0.092). The percentage of acetabular cups placed within ±5° from the target angles was significantly higher in the Pin-less AR navigation group (90.3%) compared with the conventional group (52.6%) (<em>P</em> ​&lt; ​0.001).</p></div><div><h3>Conclusions</h3><p>This study demonstrates that Pin-less AR navigation yielded generally accurate acetabular cup positioning, surpassing the conventional method. Further research is warranted to thoroughly evaluate Pin-less AR navigation.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 3","pages":"Pages 94-98"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000148/pdfft?md5=9d4448de3dec090280fd22203e88600e&pid=1-s2.0-S2949705124000148-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141433836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surgical intervention should be considered for sciatic nerve palsy following total hip arthroplasty using a posterolateral approach","authors":"Kazunari Ishida ,&nbsp;Nao Shibanuma ,&nbsp;Tomoyuki Matsumoto ,&nbsp;Yuichi Kuroda ,&nbsp;Naoki Nakano ,&nbsp;Masahiro Kurosaka ,&nbsp;Ryosuke Kuroda ,&nbsp;Shinya Hayashi","doi":"10.1016/j.jjoisr.2024.07.002","DOIUrl":"10.1016/j.jjoisr.2024.07.002","url":null,"abstract":"<div><h3>Purpose</h3><p>This single-center study aimed to determine whether surgical neurolysis influences muscle power recovery in sciatic nerve palsy following total hip arthroplasty (THA).</p></div><div><h3>Methods</h3><p>Among 1912 THAs performed between 2007 and 2019, a total of 1575 THAs using a posterolateral approach (primary THA, 1483 cases; revision THA, 92 cases) were retrospectively reviewed. Subjects who showed sciatic nerve palsy with motor disturbance were extracted. Demographic data, muscle power, and sensory disturbance at the onset of palsy and at final follow-up were examined. Subjects were divided into two groups (conservative treatment group and surgical treatment group) and clinical outcomes were compared between the two groups. Positive recovery was defined as muscle power greater than Manual Muscle Test grade 3.</p></div><div><h3>Results</h3><p>Thirteen cases (0.8%), including eight in the conservative treatment group and five in the surgical treatment group, showed post-operative sciatic nerve palsy. Four cases (80.0%) in the surgical treatment group achieved full muscle power recovery. All three subjects who received surgical treatment on the day of onset of palsy achieved full muscle power and sensory recovery. More patients recovered muscle power in the surgical treatment group than in the conservative treatment group.</p></div><div><h3>Conclusion</h3><p>Muscle power recovery was found in 80.0% of cases in the surgical treatment group and 12.5% of the conservative treatment group. All cases that received surgical intervention on the onset day of palsy achieved full muscle power and sensory recovery, whereas no cases achieved full muscle power recovery in the conservative treatment group. Immediate surgical intervention should be considered for sciatic nerve palsy following THA using a posterolateral approach.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 3","pages":"Pages 146-150"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000215/pdfft?md5=08c81a049526a2576c2f4645c9801d56&pid=1-s2.0-S2949705124000215-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Method for defining the horizontal plane in fluoroscopic kinematic analysis","authors":"Takahiro Arakawa ,&nbsp;Kenichi Kono ,&nbsp;Tetsuya Tomita ,&nbsp;Takaharu Yamazaki ,&nbsp;Masashi Tamaki ,&nbsp;Shoji Konda ,&nbsp;Teruya Ishibashi ,&nbsp;Ryota Yamagami ,&nbsp;Kohei Kawaguchi ,&nbsp;Tomofumi Kage ,&nbsp;Ryo Murakami ,&nbsp;Hiroshi Inui ,&nbsp;Shuji Taketomi ,&nbsp;Sakae Tanaka","doi":"10.1016/j.jjoisr.2024.05.002","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.05.002","url":null,"abstract":"<div><h3>Purpose</h3><p><em>In vivo</em> kinematics of skeletal joints and prostheses is affected by gravity; therefore, absolute tilt must be taken into account. However, current fluoroscopic kinematic analysis cannot measure the tilt. This study introduces and validates a method for defining the horizontal plane in fluoroscopy systems to measure the tilt of an object.</p></div><div><h3>Methods</h3><p>A rectangular metal plate (200 ​× ​200 ​× ​10 ​mm) with a flatness of 0.03/100 ​mm was horizontally adjusted using a leveler (sensitivity of 0.02° and accuracy of ±0.06°), and its three-dimensional coordinate was calculated from a two-dimensional fluoroscopic image. A coordinate calculation formula was developed, with precision and accuracy assessed via computer simulations. Actual fluoroscopic tests included four aspects: accuracy under the same condition; accuracy under different X-ray tube height; reproducibility when changing X-ray tube height; and reproducibility when the flat panel was tilted and returned.</p></div><div><h3>Results</h3><p>The theoretical measurement error indicated by the computer simulations was 0.0 ​± ​0.2° on the <em>xy</em>-plane and 0.0 ​± ​0.0° on the <em>yz</em>-plane. The actual experimental results showed that the horizontal plane tilt was measured to be −0.2 ​± ​0.1° tilt on the <em>xy</em>-plane and 0.3 ​± ​0.0° tilt on the <em>yz</em>-plane for the device used in this study. The <em>F</em>-test showed no significant differences between the computer simulations and the actual experiments. There were no significant differences between the four actual tests.</p></div><div><h3>Conclusions</h3><p>This method enables the horizontal plane to be defined and the tilt of an object to be measured in fluoroscopic kinematic analysis.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 3","pages":"Pages 99-105"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000124/pdfft?md5=8b505a1b580116ed9979df6473ddb3bc&pid=1-s2.0-S2949705124000124-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141439349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comorbid frailty and sarcopenia in older patients after total hip arthroplasty: An observational study","authors":"Takashi Ikeda ,&nbsp;Kazunari Ninomiya ,&nbsp;Koji Suzuki ,&nbsp;Kazuo Hirakawa","doi":"10.1016/j.jjoisr.2024.06.004","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.06.004","url":null,"abstract":"<div><h3>Purpose</h3><p>Frailty and sarcopenia may progressively worsen physical function, and studies have noted the frequent presence of sarcopenia in patients who undergo total hip arthroplasty (THA). This study aimed to examine the prevalence of comorbid frailty and sarcopenia in older patients undergoing THA and to determine the impact of these conditions on lower limb strength and hip function.</p></div><div><h3>Methods</h3><p>Patients aged ≥65 years who had undergone THA at least 1 year previously were divided into five groups according to the presence and severity of frailty and sarcopenia. Lower limb strength [hip abductor (HA) and knee extensor (KE)], balance, and hip function were compared.</p></div><div><h3>Results</h3><p>Sarcopenia and frailty affected lower limb muscle strength and hip function in a staircase-like manner, with mean ​± ​standard deviation values for the five groups as follows: HA muscle strength (in Nm/body weight), robust 0.80 ​± ​0.23, pre-frail ​+ ​non-sarcopenia 0.69 ​± ​0.17, pre-frail ​+ ​sarcopenia 0.58 ​± ​0.20, frail ​+ ​non-sarcopenia 0.54 ​± ​0.16, frail ​+ ​sarcopenia 0.50 ​± ​0.16; KE muscle strength (in kgf/body weight), robust 1.17 ​± ​0.23, pre-frail ​+ ​non-sarcopenia 1.03 ​± ​0.32, pre-frail ​+ ​sarcopenia 0.90 ​± ​0.31, frail ​+ ​non-sarcopenia 0.84 ​± ​0.27, frail ​+ ​sarcopenia 0.74 ​± ​0.21; and Harris Hip Score, robust 96.8 ​± ​4.6, pre-frail ​+ ​non-sarcopenia 94.3 ​± ​7.9, pre-frail ​+ ​sarcopenia 88.6 ​± ​9.6, frail ​+ ​non-sarcopenia 87.5 ​± ​10.3, frail ​+ ​sarcopenia 83.5 ​± ​8.6.</p></div><div><h3>Conclusion</h3><p>Progression of sarcopenia and frailty affects lower limb muscle strength and physical function in a staircase-like fashion, suggesting the need to assess the cumulative effects of the two. Among this population, rather than interventions to improve muscle strength and balance in specific areas, interventions to maintain a comprehensive level of physical fitness and muscle mass (including nutrition and lifestyle changes) may be necessary.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 3","pages":"Pages 123-128"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000161/pdfft?md5=d6caafb120ee35126f7cd6387954bd1a&pid=1-s2.0-S2949705124000161-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141540017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Learning curve of minimally invasive anterolateral approach in supine position for total hip arthroplasty","authors":"Hiroshi Inui,&nbsp;Isao Nakasone,&nbsp;Takahito Kanazawa,&nbsp;Tetsu Yamashita,&nbsp;Yu Tanuma,&nbsp;Kazuo Saita","doi":"10.1016/j.jjoisr.2024.02.001","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.02.001","url":null,"abstract":"<div><h3>Background</h3><p>Total hip arthroplasty (THA) using minimally invasive anterolateral approach in the supine position (ALS) is reported to achieve good clinical outcomes including lower dislocation rates and early clinical recovery. However, minimally invasive ALS THA is technically challenging, especially among surgeons who are newly introduced to these techniques. This study aimed to evaluate the learning curves associated with minimally invasive ALS THA.</p></div><div><h3>Methods</h3><p>This study divided 720 primary THAs with a minimally invasive ALS approach into three groups based on the number of previous procedures per surgeon (A:1–100, B:101–200, C: &gt;201). Surgical time and perioperative complications were compared among the three groups.</p></div><div><h3>Results</h3><p>Perioperative complications were seen in 8.0% of patients, including periprosthetic fractures (4.2%), surgical site infection (1.3%), stem subsidence (1.0%), nerve palsy (0.6%), dislocation (0.4%), major bleeding (0.4%), and liner malseating (0.1%). The rate of perioperative complications in each group was 8.6% (30 patients), 10.9% (22 patients), and 3.5% (6 patients) in groups A, B, and C, respectively. Group C has a significantly lower rate than other groups. Group B has significantly higher surgical site infection rate than other groups. No statistically significant difference was found in the surgical times among the three groups.</p></div><div><h3>Conclusion</h3><p>The learning curve associated with minimally invasive ALS THA was approximately 200 cases in terms of perioperative complications. Moderately experienced surgeons should always pay careful attention to avoid complications during ALS THA until they perform &gt;200 cases.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 2","pages":"Pages 31-34"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000021/pdfft?md5=cb2c2d40758e6b9a33072b5fba7efe77&pid=1-s2.0-S2949705124000021-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140052216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bone substitute fracture in open wedge high tibial osteotomy: Comparison of two different bone substitutes","authors":"Ryuichi Nakamura ,&nbsp;Masaki Amemiya ,&nbsp;Kaori Matsumoto ,&nbsp;Ippei Yoshida ,&nbsp;Fumiyoshi Kawashima ,&nbsp;Tomoyuki Shimakawa ,&nbsp;Akira Okano","doi":"10.1016/j.jjoisr.2024.04.002","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.04.002","url":null,"abstract":"<div><h3>Purpose</h3><p>The aim of this study was to retrospectively compare bone substitute fracture patterns and outcomes in patients who underwent open wedge high tibial osteotomy (OWHTO) with OSferion60 or OSferion60 Marvelous bone substitutes. Patients with and without bone substitute fractures were compared and risk factors for bone substitute fracture were identified.</p></div><div><h3>Methods</h3><p>Included patients were physically active non-smokers with knee osteoarthritis and deformity in the proximal tibia, persistent pain, and &lt;5° of flexion contracture. OWHTO was performed with a TriS plate and a target femorotibial angle (FTA) of 170°. Full weight-bearing began the day after surgery. Pre-, intra-, and post-operative evaluations of demographic, clinical, and radiological factors were performed. Regression analysis was performed to identify risk factors for bone substitute fracture.</p></div><div><h3>Results</h3><p>Data for 63 patients were analyzed (OSferion60, <em>n</em> ​= ​28 and Marvelous, <em>n</em> ​= ​35; bone substitute fracture, <em>n</em> ​= ​32 and non-bone substitute fracture, <em>n</em> ​= ​31). No significant differences were found between the bone substitute groups in patient characteristics and pre-operative and 2-year FTA, Japanese Orthopaedic Association (JOA) score, and flexion range. FTA and JOA scores improved significantly 2 years post-operatively (both <em>p</em> ​&lt; ​0.001). There were 32 bone substitute fractures (OSferion60, <em>n</em> ​= ​20; Marvelous, <em>n</em> ​= ​12); all occurred by the 1-month follow-up. Gap filling occurred significantly earlier in the Marvelous group versus the OSferion60 group (<em>p</em> ​&lt; ​0.001). Risk factors for bone substitute fracture were weaker bone substitute [odds ratio (OR) ​= ​8.34; <em>p</em> ​&lt; ​0.001] and lateral hinge fracture (OR ​= ​11.7; <em>p</em> ​= ​0.045).</p></div><div><h3>Conclusions</h3><p>Although bone substitute fracture was common in both bone substitute groups, this did not affect outcomes. However, lateral hinge fractures are a particular concern.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 2","pages":"Pages 58-65"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000082/pdfft?md5=246ad172bee1d2a8f9b002f99a2ac6bc&pid=1-s2.0-S2949705124000082-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140643425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of deep medial collateral ligament release during high knee flexion movements","authors":"Kenichi Kono ,&nbsp;Shoji Konda ,&nbsp;Masashi Tamaki ,&nbsp;Sakae Tanaka ,&nbsp;Tetsuya Tomita","doi":"10.1016/j.jjoisr.2024.03.002","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.03.002","url":null,"abstract":"<div><h3>Purpose</h3><p>The medial preserving gap technique has recently been used in total knee arthroplasty. Generally, the deep medial collateral ligament (DMCL) is released using this technique. However, the effect of DMCL release on the kinematics and length of the ligaments remains unknown. This study aimed to clarify how DMCL release affects the kinematics and length change of the ligaments during high knee flexion movements.</p></div><div><h3>Methods</h3><p>Three cadaveric knees were examined using a computed tomography-based navigation system. The following parameters were evaluated: femoral rotation and varus-valgus angle relative to the tibia; anteroposterior translation of the sulcus distal to the medial epicondyle (medial side) and tip of the lateral epicondyle of the femur (lateral side); mediolateral translation of the medial and lateral sides of the plane perpendicular to the tibial mechanical axis; and kinematic pathways during non-weight-bearing knee flexion, cross-legged motion, and sideways motion.</p></div><div><h3>Results</h3><p>There were no significant differences in the kinematics and length change of the ligaments during all movements after DMCL release compared with that before DMCL release.</p></div><div><h3>Conclusion</h3><p>DMCL release did not affect the kinematics and length change of the ligaments.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 2","pages":"Pages 40-45"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000057/pdfft?md5=9466264fb1c90c8420dad32354d67890&pid=1-s2.0-S2949705124000057-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140141780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}