Journal of Joint Surgery and Research最新文献

{"title":"Changes in the cortical bone reaction around the stem after uncemented total hip replacement using short tapered wedge stem","authors":"Hao Dinh Anh Hoang ,&nbsp;Hironobu Hoshino ,&nbsp;Mitsuru Hanada ,&nbsp;Yukihiro Matsuyama","doi":"10.1016/j.jjoisr.2024.10.001","DOIUrl":"10.1016/j.jjoisr.2024.10.001","url":null,"abstract":"<div><h3>Purpose</h3><div>This study examined the relationship between stem alignment and the cortical bone area around the distal end of the femoral component using three-dimensional computed tomography (3D-CT) images after uncemented total hip arthroplasty (THA).</div></div><div><h3>Methods</h3><div>A total of 59 patients who underwent primary THA using an uncemented short tapered wedge stem from 2019 to 2021 were followed for at least 24 months. Patients were divided into groups based on stem position. Changes in stem position and cross-sectional area of femoral cortical bone at the distal end of the stem were examined using 3D-CT at 12 months and 24 months post-operatively and were compared with pre-operative values.</div></div><div><h3>Results</h3><div>The 12-month post-operative cortical bone area around the stem showed significant differences compared with the pre-operative area in the anterior, posterior, and lateral zone 1. Differences at these same points were noted when comparing the 24-month post-operative area with the pre-operative area. No significant difference was found in the change in the cortical bone area over time among the neutral, flexed, and extended stem groups. In the varus stem group, a significant increase in cortical bone area over time was observed in lateral zone 2. In the valgus stem group, a significant increase in the cortical bone area over time was observed in medial zone 1.</div></div><div><h3>Conclusions</h3><div>Stem alignment may affect periprosthetic cortical bone changes after THA using an uncemented short tapered wedge stem. Cortical bone reaction was revealed laterally to the stem tip in the varus-aligned stem, and medially to the stem tip in the valgus-aligned stem.</div></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 4","pages":"Pages 173-179"},"PeriodicalIF":0.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593812","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":"Pain characteristics in patients with hip osteoarthritis","authors":"Toru Nishiwaki,&nbsp;Hisatoshi Ishikura,&nbsp;Tatsuya Yamamoto","doi":"10.1016/j.jjoisr.2024.09.003","DOIUrl":"10.1016/j.jjoisr.2024.09.003","url":null,"abstract":"<div><h3>Purpose</h3><div>Exacerbations of osteoarthritis (OA) pain significantly impair activities of daily living and walking, thereby reducing quality of life. Despite various treatments, persistent pain remains a challenge, particularly in patients with hip OA, where pain perception mechanisms extend beyond nociceptive pain. This study examined the pain characteristics in patients with hip OA, with an emphasis on neuropathic pain and central sensitization (CS).</div></div><div><h3>Methods</h3><div>A total of 421 patients scheduled for unilateral total hip arthroplasty were analyzed using the painDETECT score and Central Sensitization Inventory to classify the pain types as nociceptive (Noc), CS, neuropathic (Neu), or neuropathic with CS (NeuCS).</div></div><div><h3>Results</h3><div>The results indicated that 72.9% of patients experienced Noc pain, while 5.0% experienced combined NeuCS pain. The Neu and NeuCS groups exhibited significantly lower modified Harris Hip Score and EuroQol-5 Dimensions Questionnaire (EQ-5D) scores than the Noc group, indicating worse clinical outcomes and quality of life. Neu pain was more intense at rest, and when combined with CS it significantly diminished the quality of life.</div></div><div><h3>Conclusion</h3><div>These findings highlight the need for mechanism-based pain treatment strategies, such as Neu pain and CS components, which independently and cumulatively affect clinical scores and quality of life. This study highlights the importance of early recognition and targeted treatment of these pain mechanisms in patients with hip OA. Future research should focus on evaluating therapeutic interventions for Neu pain and CS to optimize patient outcomes.</div></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 4","pages":"Pages 168-172"},"PeriodicalIF":0.0,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423620","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 physical function recovery in patients with rheumatoid arthritis and those with osteoarthritis after total knee arthroplasty","authors":"Eriko Mashimoto ,&nbsp;Manabu Nankaku ,&nbsp;Gakuto Kitamura ,&nbsp;Kohei Nishitani ,&nbsp;Shinichiro Nakamura ,&nbsp;Shinichi Kuriyama ,&nbsp;Ryosuke Ikeguchi ,&nbsp;Shuichi Matsuda","doi":"10.1016/j.jjoisr.2024.08.001","DOIUrl":"10.1016/j.jjoisr.2024.08.001","url":null,"abstract":"<div><h3>Purpose</h3><p>Patients with rheumatoid arthritis (RA) who have undergone primary total knee arthroplasty (TKA) have a different recovery process of walking ability compared with patients with osteoarthritis (OA). However, how this relates to pain and other physical functions is unknown. This study aimed to evaluate and compare physical function after TKA in patients with RA and knee OA.</p></div><div><h3>Methods</h3><p>This study enrolled 146 patients (24 with RA and 122 with OA) who underwent primary TKA. Data on the following were collected pre- and post-TKA (3 weeks and 1 year): 10 Meter Walk Test (10MWT), Timed Up and Go (TUG) test, knee pain, physical activity, isometric knee extensor and flexor strength, passive knee extension and flexion angle, and one-leg standing time. Two-way repeated measures analysis of variance (ANOVA) with Bonferroni <em>post hoc</em> comparisons was performed to examine the influence of the different diseases on post-operative changes in physical function over time.</p></div><div><h3>Results</h3><p>The RA group had a significantly more severe pre-operative pain score than the OA group (<em>p</em> ​&lt; ​0.05). A two-way repeated measures ANOVA showed a significant group ​× ​time interaction in the TUG test and 10MWT time. The RA group had a slower pre-operative time in these tests than the OA group (<em>p</em> ​&lt; ​0.01). However, the TUG test and 10MWT time at 3 weeks and 1 year post-TKA were not significantly different between the two groups.</p></div><div><h3>Conclusion</h3><p>In patients with RA, walking ability significantly improved at 3 weeks following TKA, and showed recovery from 3 weeks up to 1 year similar to patients with OA.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 4","pages":"Pages 163-167"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000227/pdfft?md5=9060ad885107605c6f477c92faae18a9&pid=1-s2.0-S2949705124000227-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142242107","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":"What are the most difficult steps in total hip arthroplasty for early-career surgeons and how can future technology help most? A survey of the American Association of Hip and Knee Surgeons Young Arthroplasty Group","authors":"Ken Tashiro ,&nbsp;Yasuhiro Homma ,&nbsp;Jesse Wolfstadt ,&nbsp;Christopher M. Melnic ,&nbsp;Muneaki Ishijima ,&nbsp;Atul F. Kamath","doi":"10.1016/j.jjoisr.2024.09.002","DOIUrl":"10.1016/j.jjoisr.2024.09.002","url":null,"abstract":"<div><h3>Purpose</h3><p>While technology in total hip arthroplasty (THA) is generally developed by experienced surgeons, particular difficulties in surgical steps and technical demands experienced by early-career surgeons remain important. This study investigated the challenges early-career surgeons currently face in THA in order to obtain insights into how they perceive future innovative technologies might reduce the difficulties and complications associated with THA.</p></div><div><h3>Methods</h3><p>Members of the American Association of Hip and Knee Surgeons Young Arthroplasty Group were surveyed. The perceived degree of difficulty with key THA surgical steps and the utility of adjunctive technology were recorded (scale 1–10, from no difficulty/not important to very difficult/very important).</p></div><div><h3>Results</h3><p>The membership response rate was 16.1%. The most common THA approach was the direct anterior approach (DAA) (67.4%). Four of the top five most difficult surgical steps were associated with cup preparation/placement. Fluoroscopy was the most used technology (56.7%), followed by no technology use (21.2%) and robot arm assistance (12.1%). With respect to the importance of technology, accurate cup placement ranked first. Dislocation and stem subsidence were the top two complications for which technological advances were thought to be most beneficial. Subgroup analysis based on surgical approach suggested that DAA users had significantly more difficulty with direction of stem rasping than non-DAA users (<em>p</em> ​&lt; ​0.0001).</p></div><div><h3>Conclusion</h3><p>This is the first survey to reveal data about perceived difficulties in THA surgical steps from the perspective of early-career arthroplasty surgeons and the role of technology in mitigating these complications. Future technological developments may take these needs of early-career surgeons into account.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 4","pages":"Pages 157-162"},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000239/pdfft?md5=ec3389e929d99dfbe76509b80d584033&pid=1-s2.0-S2949705124000239-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241530","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":"Plain radiograph evaluation of concurrent filling of tibial peg holes with bone in cementless total knee arthroplasty","authors":"Kazue Hayakawa,&nbsp;Hideki Date,&nbsp;Sho Nojiri,&nbsp;Yosuke Kaneko,&nbsp;Kohei Shibata,&nbsp;Nobuyuki Fujita","doi":"10.1016/j.jjoisr.2024.09.001","DOIUrl":"10.1016/j.jjoisr.2024.09.001","url":null,"abstract":"<div><h3>Purpose</h3><p>This study aimed to evaluate the effectiveness of a novel technique for securing the tibial component in cementless total knee arthroplasty (TKA) by utilizing resected cancellous bone to fill the peg holes. It was hypothesized that this method would reduce the incidence of radiolucent lines (RLLs) on plain radiographs. To test this hypothesis, a retrospective comparison of plain radiographs from patients who underwent the bone-filling technique (bone filling group) versus those who did not receive this treatment (conventional group) was conducted.</p></div><div><h3>Methods</h3><p>Participants were 151 patients (213 joints) who underwent TKA with the NexGen trabecular metal (TM) modular tibia (Zimmer Biomet) from 2011 to 2016 [bone filling group, 54 patients (69 joints); conventional group, 100 patients (144 joints); 3 patients had 1 joint in each group]. Clinical evaluations, plain radiographs, and operative time were compared between groups.</p></div><div><h3>Results</h3><p>The mean follow-up period was 5 years and 5 months. Knee Society Scores and Knee Society Functional Scores did not differ significantly between groups; however, the bone filling group had a significantly lower incidence of RLLs (<em>p</em> ​&lt; ​0.05) and significantly more longitudinal trabecular thickening below the pegs (<em>p</em> ​&lt; ​0.05). Multiple logistic regression analysis with the presence/absence of RLLs as the dependent variable revealed a significant effect of bone filling (odds ratio ​= ​2.820, 95% confidence interval 1.033–7.700; <em>p</em> ​&lt; ​0.05).</p></div><div><h3>Conclusion</h3><p>Concurrent peg hole bone filling significantly reduces the incidence of RLLs and significantly increases longitudinal trabecular thickening below the pegs during TKA with the NexGen TM modular tibial component.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 4","pages":"Pages 151-156"},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000240/pdfft?md5=16cac605b90a9f1a297352fca61334b7&pid=1-s2.0-S2949705124000240-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232759","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":"2024-08-08","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":"Clinical outcomes of total knee arthroplasty for valgus knees caused by hip diseases: Coxitis knees and long leg arthropathies","authors":"Kensuke Wada,&nbsp;Yuichi Kuroda,&nbsp;Naoki Nakano,&nbsp;Masanori Tsubosaka,&nbsp;Tomoyuki Kamenaga,&nbsp;Shinya Hayashi,&nbsp;Ryosuke Kuroda,&nbsp;Tomoyuki Matsumoto","doi":"10.1016/j.jjoisr.2024.06.007","DOIUrl":"10.1016/j.jjoisr.2024.06.007","url":null,"abstract":"<div><h3>Purpose</h3><p>Coxitis knees and long leg arthropathies are similar pathological conditions; however, their clinical outcomes after total knee arthroplasty (TKA) have rarely been reported. The present study aimed to investigate clinical outcomes after TKA for these knee conditions, namely valgus knees caused by hip disease.</p></div><div><h3>Methods</h3><p>This retrospective cohort study included 19 TKAs performed on valgus knees caused by hip osteoarthritis (OA). Two years post-operatively, clinical outcomes, including range of motion and 2011 Knee Society Score (2011KSS), were assessed and were compared with pre-operative values. Pre-operative knee phenotypes, including lateral distal femoral angle and medial proximal tibial angle, were assessed, and their associations with clinical outcomes were investigated.</p></div><div><h3>Results</h3><p>All subscales of the 2011KSS improved significantly post-operatively (<em>P</em> ​&lt; ​0.05). There was also a significant improvement in extension post-operatively (<em>P</em> ​&lt; ​0.05). The mean femorotibial angle improved post-operatively from 157.7° to 175.2°(<em>P</em> ​&lt; ​0.05). There were five coxitis knee patients who had knee OA on the ipsilateral side of the hip, and five long leg arthropathy patients who had knee OA on the contralateral side of the hip.</p></div><div><h3>Conclusions</h3><p>Satisfactory clinical outcomes were observed after TKA for valgus knees caused by hip OA, such as coxitis knees and long leg arthropathies.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 3","pages":"Pages 141-145"},"PeriodicalIF":0.0,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000197/pdfft?md5=dea64b053b2831ca78e6a462fd709410&pid=1-s2.0-S2949705124000197-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141731747","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":"2024-07-20","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":"Relationship between hip contact force during gait and patient-reported outcome measures 6 months after total hip arthroplasty","authors":"Yasushi Kurihara ,&nbsp;Hironori Ohsugi ,&nbsp;Tomonari Tosaka ,&nbsp;Tadamitsu Matsuda ,&nbsp;Yoshikazu Tsuneizumi ,&nbsp;Tadashi Tsukeoka","doi":"10.1016/j.jjoisr.2024.06.005","DOIUrl":"https://doi.org/10.1016/j.jjoisr.2024.06.005","url":null,"abstract":"<div><h3>Purpose</h3><p>Evaluating the hip contact force (HCF) during gait is important for assessing treatment outcomes after total hip arthroplasty (THA). This study investigated the relationship between patient-reported outcome measures (PROMs) and HCF during gait after THA as well as gait biomechanical factors affecting HCF during gait in relation to PROMs.</p></div><div><h3>Methods</h3><p>In total, 29 female patients who underwent THA with a 6-month follow-up were included in this study. Musculoskeletal model analysis was performed to obtain the first and second peak values of the HCF during gait and the minimum value between both peaks. PROMs were evaluated using the Japanese Orthopaedic Association Hip Disease Evaluation Questionnaire (JHEQ). The relationship between JHEQ and selected HCFs and between the HCF and gait biomechanical factors was examined.</p></div><div><h3>Results</h3><p>The second peak value of HCF was positively related to the total JHEQ, movement, and mental health scores (<em>r</em> ​= ​−0.551, 0.410, and 0.495, respectively). A positive relationship was found between the second peak value of the HCF and hip flexion–extension range of motion (<em>r</em> ​= ​0.518), maximum hip abduction moment (<em>r</em> ​= ​0.432), and maximum knee extension moment (<em>r</em> ​= ​0.417). A negative relationship was found between the second peak value of the HCF and the maximum knee abduction moment (<em>r</em> ​= ​−0.458).</p></div><div><h3>Conclusions</h3><p>The second peak value of HCF during gait after THA was related to PROMs. The second peak value was related to the hip flexion–extension range of motion, maximum hip abduction moment, and maximum knee extension and abduction moment.</p></div>","PeriodicalId":100795,"journal":{"name":"Journal of Joint Surgery and Research","volume":"2 3","pages":"Pages 129-135"},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949705124000173/pdfft?md5=e5b3efb018f0b6568f444045e5775b0e&pid=1-s2.0-S2949705124000173-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141596529","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":"2024-07-04","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}