Journal of Joint Surgery and Research最新文献

{"title":"Changes in ulnar and median nerve conduction velocity after reverse total shoulder arthroplasty: Correlation with distalization and lateralization","authors":"Kotaro Yamakado","doi":"10.1016/j.jjoisr.2024.03.003","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.03.003","url":null,"abstract":"<div><h3>Purpose</h3><p>The purpose of this study was to assess ulnar and median nerve injury after reverse total shoulder arthroplasty (RSA) by measuring the sensory nerve conduction velocity (SCV). The secondary objective was to evaluate the impact of lateralization and/or distalization on SCV changes.</p></div><div><h3>Methods</h3><p>Twenty consecutive cases were prospectively included and retrospectively reviewed. SCV of the ulnar and median nerves as well as humeral lateralization/distalization quantified by plain radiography were evaluated pre-operatively and at 1 week post-operatively. Changes in SCV were tested using the paired <em>t</em>-test, and correlations between humeral lateralization/distalization and SCV changes were tested using Kendall's rank correlation coefficient and maximal information coefficient (MIC).</p></div><div><h3>Results</h3><p>The SCV of the ulnar nerve was delayed from 55.4 ​m/s pre-operatively to 53.0 ​m/s post-operatively (<em>p</em> ​= ​0.021), whereas there was no significant change in the median nerve (<em>p</em> ​= ​0.17). There was a weak to moderate correlation between ulnar nerve SCV delay and lateralization (τ ​= ​−0.38; <em>p</em> ​= ​0.021; MIC ​= ​0.70) but no significant correlation with distalization (<em>p</em> ​= ​0.65; MIC ​= ​0.56).</p></div><div><h3>Conclusions</h3><p>Following RSA, a small but significant delay in SCV of the ulnar nerve was observed. A negative correlation was found between lateralization and SCV delay of the ulnar nerve.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 2","pages":"Pages 51-57"},"PeriodicalIF":0.0,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000069/pdfft?md5=d87ce27d744f0bd771a2a9cb3277aace&pid=1-s2.0-S2949705124000069-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140543842","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":"Preoperative factors associated with patient satisfaction after modified kinematically aligned total knee arthroplasty in varus knees","authors":"Kemmei Ikuta,&nbsp;Tomoyuki Matsumoto,&nbsp;Naoki Nakano,&nbsp;Yuichi Kuroda,&nbsp;Shinya Hayashi,&nbsp;Ryosuke Kuroda","doi":"10.1016/j.jjoisr.2024.03.001","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.03.001","url":null,"abstract":"<div><h3>Purpose</h3><p>Kinematically aligned-total knee arthroplasty (KA-TKA) has recently attracted significant interest because it delivers better clinical outcomes than mechanically aligned (MA)-TKA. However, the optimal preoperative factors that maximize the effectiveness of KA-TKA remain controversial. Therefore, we aimed to determine the preoperative factors that are appropriate for and might benefit from modified KA-TKA, based on patient-reported outcome measures (PROMs).</p></div><div><h3>Methods</h3><p>The relationships between postoperative satisfaction and other variables in 84 patients with varus-type osteoarthritis of the knee who underwent primary modified KA-TKAs were investigated using stepwise multiple regression analysis. Patients were assigned to groups that were satisfied or dissatisfied with their outcomes after KA-TKA according to the 2011 Knee Society Scores. The cutoff for preoperative advanced activities scores (AASs) for excellent satisfaction were determined by analyzing receiver operating characteristic (ROC) curves. The variables correlated with excellent satisfaction were identified using logistic regression models.</p></div><div><h3>Results</h3><p>A preoperative variable relevant to patient satisfaction was AAS (β ​= ​0.465). The results of the ROC curve analysis revealed eight optimal cut-offs for preoperative AASs that predicted excellent satisfaction, with a sensitivity and specificity of 0.700 and 0.625, respectively. Logistic regression analysis revealed that AASs significantly contributed to excellent patient satisfaction (odds ratio, 1.181; p ​= ​0.001).</p></div><div><h3>Conclusions</h3><p>Individuals who were highly active preoperatively were good candidates for KA-TKA. This modified kinematically aligned surgical technique can satisfy the demands of highly active patients.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 2","pages":"Pages 46-50"},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000045/pdfft?md5=dc03514f33de8b51126635761b82dcd8&pid=1-s2.0-S2949705124000045-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140296256","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":"2024-03-16","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}

{"title":"Fluoro HIP, a new software for intraoperative evaluation of the cup angles based on fluoroscopic images","authors":"Hiroki Kobayashi ,&nbsp;Hiroyuki Ogawa ,&nbsp;Kazuki Nakamura ,&nbsp;Taro Yamashita ,&nbsp;Keisuke Horiuchi ,&nbsp;Kazuhiro Chiba","doi":"10.1016/j.jjoisr.2024.02.002","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.02.002","url":null,"abstract":"<div><h3>Purpose</h3><p>Despite its clinical benefits, intraoperative navigation is currently used only in approximately 20% of total hip arthroplasties (THA) partly due to the high cost of the systems and time-consuming preoperative preparation. By providing a simpler and less expensive alternative, the use of intraoperative navigation is likely to increase among surgeons. In this study, we sought to validate the accuracy and utility of Fluoro HIP, a newly developed cup angle measurement software that runs on iOS devices.</p></div><div><h3>Methods</h3><p>Twenty-seven patients who underwent primary total hip arthroplasty between June and September 2022 were included in the study. All patients underwent surgery in the supine position. Inclination and anteversion angles were determined using Fluoro HIP software based on the fluoroscopic images captured during surgery. Navigation errors were calculated by comparing with the values obtained from postoperative CT images.</p></div><div><h3>Results</h3><p>The inclination and anteversion angles measured were 38.7 ​± ​3.9 and 15.0 ​± ​3.1°, respectively. The absolute value errors were 2.7 ​± ​1.9 and 3.0 ​± ​2.1° for the inclination and anteversion, respectively. Although Fluoro HIP software-based system may not be as precise as the conventional CT-based or portable navigation systems, the intraoperative evaluation of the cup angles by this system was considered to have acceptable accuracy and reproducibility for most THA cases performed in the supine position. Most importantly, our system requires no preoperative preparation and is significantly less expensive than other types of navigation systems currently in use.</p></div><div><h3>Conclusion</h3><p>The Fluoro HIP software-based system is a highly cost-effective and affordable alternative to the conventional navigation systems.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 2","pages":"Pages 35-39"},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000033/pdfft?md5=832a7c8346dc67434e9bffaec38046b1&pid=1-s2.0-S2949705124000033-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140113565","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":"2024-03-06","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":"Anatomical landmark for medialized patellar component in TKA","authors":"Ryosuke Tsurui ,&nbsp;Shinya Kawahara ,&nbsp;Satoshi Hamai ,&nbsp;Yukio Akasaki ,&nbsp;Hidetoshi Tsushima ,&nbsp;Yasuhiko Kokubu ,&nbsp;Taro Mawatari ,&nbsp;Yasuharu Nakashima","doi":"10.1016/j.jjoisr.2023.12.002","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2023.12.002","url":null,"abstract":"<div><h3>Purpose</h3><p>The aim of this study was to show a concrete setting landmark in two component types of round and anatomical oval shapes using three-dimensional (3D) simulation analyses in total knee arthroplasty (TKA).</p></div><div><h3>Methods</h3><p>The patellar resection surface was simulated three-dimensionally using preoperative CT data of 54 patients (68 knees) who underwent TKA with varus knee osteoarthritis. The mediolateral position of the original patellar ridge was examined. The round and anatomical oval patellar components were aligned in the following cases: medial edge setting, patellar ridge setting, maximal size setting. The component ridge position from the medial edge and size in each case were examined.</p></div><div><h3>Results</h3><p>The original patellar ridge was located nearly 40% from the medial edge. In aligning the component to reproduce the original patellar ridge, the medial bone width uncovered with the component was nearly 4 mm in both designs. The component size was significantly smaller as the component was placed more medially. In selecting the maximal size, the round component was aligned more laterally than the original patellar ridge. In contrast, the anatomical oval component enabled to be concomitant with a more appropriate position and size.</p></div><div><h3>Conclusion</h3><p>The position where the medial bone width uncovered with the component was nearly 4 mm, not the medial edge, was found as the best place to reproduce the original patellar ridge in both round and anatomical oval components. Specifically, the anatomical oval component might be more favorable with respect to the component position and size.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 1","pages":"Pages 26-30"},"PeriodicalIF":0.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705123000415/pdfft?md5=4f2c65830304a8f8e6f50c20e22e10db&pid=1-s2.0-S2949705123000415-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139548394","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":"Appreciation to reviewers in 2022–2023","authors":"","doi":"10.1016/j.jjoisr.2024.01.001","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.01.001","url":null,"abstract":"","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 1","pages":"Page 25"},"PeriodicalIF":0.0,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294970512400001X/pdfft?md5=8be41d889bfa5cc5eef3dd0fb67673f7&pid=1-s2.0-S294970512400001X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139436063","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":"Implant fixation of primary total hip arthroplasty using a cementless cup for osteoarthritis secondary to developmental dysplasia of the hip: A prospective multicenter study in Japan","authors":"Ayumi Kaneuji ,&nbsp;Hiroshi Imai ,&nbsp;Ryo Sugama ,&nbsp;Yoichi Ohta ,&nbsp;Kiyokazu Fukui ,&nbsp;Eiji Takahashi ,&nbsp;Haruhiko Akiyama ,&nbsp;Takaki Miyagawa ,&nbsp;Junya Yoshitani ,&nbsp;Hideki Fujii ,&nbsp;Ayano Amagami ,&nbsp;Minoru Watanabe ,&nbsp;Takayuki Honda ,&nbsp;Akihiko Maeda ,&nbsp;Yoshihiro Nakamura ,&nbsp;Naofumi Taniguchi ,&nbsp;Jiro Ichikawa ,&nbsp;David W. Fawley ,&nbsp;Junko Yasuda","doi":"10.1016/j.jjoisr.2023.12.001","DOIUrl":"10.1016/j.jjoisr.2023.12.001","url":null,"abstract":"<div><h3>Purpose</h3><p>This prospective multicenter study investigated the implant fixation of a cementless cup in primary total hip arthroplasty (THA) for osteoarthritis (OA) secondary to developmental dysplasia of the hip (DDH) in Japanese patients.</p></div><div><h3>Methods</h3><p>Ten hospitals in Japan were enrolled in this study. The cohort comprised 267 hips in 228 Japanese patients who underwent primary THA for OA secondary to DDH. An acetabular cup with advanced in-growth, GRIPTION™ coating, was used in all patients. Mean age at surgery was 66.9 (range 45–89) years, and 201 patients (239 hips) were female. Of these patients, 89.1 ​% (238/267) was Crowe group I. Radiolucent lines around the cup, osteolysis, cup migration, grafted bone status, and clinical scores were evaluated preoperatively and at 6 months, 1 year, and 2 years postoperatively. Adverse events were evaluated throughout the study. Implant survivorship was assessed using the Kaplan–Meier method.</p></div><div><h3>Results</h3><p>Nine hips had radiolucent lines ≥2 ​mm that resolved by 6 months. All cups showed bone in-growth and no cups loosened. At 2 years, the bone grafts had remodeled and incorporated in 68 ​% (43/63) of hips. There were four systemic and five surgical site events, and one procedure-related dislocation. The survivorship with cup revision as the endpoint was 99.6 ​% (95 ​% confidence interval, 97.3–99.9). All clinical scores were improved at 2 years compared with preoperatively (p ​&lt; ​0.01).</p></div><div><h3>Conclusions</h3><p>An advanced in-growth coated cup showed good fixation without complications in primary THA, even in patients with OA secondary to DDH.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 1","pages":"Pages 19-24"},"PeriodicalIF":0.0,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705123000403/pdfft?md5=3a333e15021afbbfe592774ef589e352&pid=1-s2.0-S2949705123000403-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139111578","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":"Five-year clinical and radiographic outcomes of Accolade TMZF and Accolade II stem use","authors":"Ken Ueoka ,&nbsp;Tamon Kabata ,&nbsp;Yoshitomo Kajino ,&nbsp;Daisuke Inoue ,&nbsp;Takaaki Ohmori ,&nbsp;Yuki Yamamuro ,&nbsp;Atsushi Taninaka ,&nbsp;Tomoyuki Kataoka ,&nbsp;Yu Yanagi ,&nbsp;Yoshitomo Saiki ,&nbsp;Musashi Ima ,&nbsp;Hiroyuki Tsuchiya","doi":"10.1016/j.jjoisr.2023.09.004","DOIUrl":"10.1016/j.jjoisr.2023.09.004","url":null,"abstract":"<div><h3>Purpose</h3><p>Although good mid-term results of the first- and second-generation cementless stems have been reported, no study has compared outcomes between generations. This study aimed to compare the mid-term results of Accolade Ti–12Mo–6Zr–2Fe (TMZF) and Accolade II over a 5-year period.</p></div><div><h3>Methods</h3><p>This retrospective, single-institution, single-surgeon observational study included patients who underwent primary total hip arthroplasty using the Accolade TMZF (n ​= ​71, group I) or Accolade II (n ​= ​73, group II) between January 2009 and July 2015. Revision and conversion cases were excluded. Functional evaluations were performed using the Japanese Orthopaedic Association hip (JOA) score. Radiographic evaluations were performed using anteroposterior radiographs. Spot welds, radiolucency, cortical hypertrophy, and stress shielding around the stem were assessed for each Gruen zone. Subsidence and stem alignment were evaluated.</p></div><div><h3>Results</h3><p>The 5-year postoperative stem survival rate was 100% in both groups. The JOA score improved from 44.0 ​± ​10.2 to 90.6 ​± ​7.6 in group I and from 49.1 ​± ​10.1 to 91.7 ​± ​6.6 in group II. There were no significant differences in preoperative and postoperative JOA scores and subscale scores in either group. Significant spot welds were observed in group II in Gruen zones 3 and 5. Stress shielding progressed over time in both groups, and the prevalence of grade 3 shielding was significantly lower in group II (p ​= ​0.028).</p></div><div><h3>Conclusion</h3><p>Both stems had a survival rate of 100%. The incidence of severe stress shielding seemed to be lower with Accolade II, but further investigations should be needed.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 1","pages":"Pages 7-12"},"PeriodicalIF":0.0,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705123000324/pdfft?md5=72147711666367a3c038fd66d6ca3e8c&pid=1-s2.0-S2949705123000324-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138502044","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":"Preserved posterior cruciate ligament contributed to knee sagittal stability, but not to rollback and deep knee flexion in cruciate-retaining total knee arthroplasty with a cruciate-substituting insert","authors":"Seiju Hayashi,&nbsp;Satoshi Miyazaki","doi":"10.1016/j.jjoisr.2023.09.005","DOIUrl":"10.1016/j.jjoisr.2023.09.005","url":null,"abstract":"<div><h3>Purpose</h3><p>No previous report has compared the differences in postoperative functional outcomes between posterior cruciate ligament (PCL)-retaining (CR-) and PCL-sacrificing (CS-) total knee arthroplasty (TKA) with detailed intraoperative consideration of joint gap and balance. The purpose of this study was to evaluate the in vivo function of preserved PCL in TKA by comparing postoperative functional outcomes between CR- and CS-TKA with a cruciate-substituting insert (CS-insert), considering intraoperative influence factors, such as the posterior tibial slope, posterior condylar offset, joint gap, joint balance, and joint laxity.</p></div><div><h3>Methods</h3><p>A total of 55 knees in 38 patients (27 knees from 18 patients in the CR group, and 28 knees from 20 patients in the CS group) were analyzed. Fluoroscopic evaluation under anesthesia in sagittal laxity, rollback amount, and the maximum flexion angles were compared between the groups.</p></div><div><h3>Results</h3><p>There were no significant differences in intraoperative or postoperative all measurement values between the two groups, but the sagittal laxity was significantly smaller in the CR group [5.4% ± 4.5% (2.4 ± 2.1 mm)] than in the CS group [9.0 ± 3.8% (4.0 ± 1.7 mm)] (<em>P</em> ​&lt; 0.01). There were no significant differences in the amount of rollback and postoperative maximum knee flexion angle between the groups.</p></div><div><h3>Conclusions</h3><p>Preserved PCL in TKA with a CS-insert contributed to knee sagittal stability, but not to rollback and deep knee flexion.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 1","pages":"Pages 13-18"},"PeriodicalIF":0.0,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705123000336/pdfft?md5=4bf3b70b626b9483a7eb3bddeacd08eb&pid=1-s2.0-S2949705123000336-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138502045","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}