Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine最新文献

{"title":"Impact of body mass index on robotic-assisted total knee arthroplasty outcomes: A retrospective cohort analysis","authors":"Waldo Gonzalez Duque ,&nbsp;Rafael Calvo Rodriguez ,&nbsp;David Figueroa Poblete ,&nbsp;Jorge Isla Villanueva ,&nbsp;Daniela Landea Caroca ,&nbsp;Camila Tapia Castillo","doi":"10.1016/j.jisako.2025.100927","DOIUrl":"10.1016/j.jisako.2025.100927","url":null,"abstract":"<div><h3>Introduction</h3><div>Obesity is a growing global health concern and a known risk factor in total knee arthroplasty (TKA). With an increasing number of obese patients requiring TKA, it is essential to understand how obesity influences clinical outcomes and complication rates. The objective of this study is to investigate the impact of obesity on clinical outcomes and complications in patients undergoing robotic-assisted TKA (RA-TKA).</div></div><div><h3>Methods</h3><div>A retrospective cohort study was conducted on 216 patients aged ≥18 years who underwent RA-TKA between 2019 and 2023, with a minimum postoperative follow-up of one year. Patients were stratified into three body mass index (BMI) categories: &lt;25, 25–29, and ≥30 ​kg/m². Demographic, intraoperative, and postoperative variables—including tourniquet use and time, implant type, hospital stay, and complications—were compared. Statistical analysis was performed (p &lt; 0.05).</div></div><div><h3>Results</h3><div>Two hundred sixteen patients (91.5% follow-up rate) were evaluated at a mean of 34 months, postoperatively. No statistically significantly difference was found among the BMI groups in terms of age, sex, use of tourniquet, hospital stay, or use of stem implants. A statistically significant difference was observed only in the group of BMI &lt;25 ​kg/m² regarding arthrofibrosis. When patients were grouped as a BMI &lt;35 vs a BMI ​≥ ​35 ​kg/m², a higher complication rate was noted in the ≥35 ​kg/m² group (18.2% versus 7.2%), though the difference was not statistically significant (p ​= ​0.09).</div></div><div><h3>Conclusions</h3><div>This study found that the difference was not statistically significant in the overall rate of postoperative complications among patients with obesity undergoing RA-TKA. However, a nonsignificant trend toward a higher complication rate was observed in patients with severe obesity (BMI ≥35 ​kg/m²). Interestingly, a statistically significant increase in arthrofibrosis was found in patients with BMI &lt;25 ​kg/m², a finding that contrasts with the current literature.</div></div><div><h3>Level of Evidence</h3><div>Level III.</div></div>","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":"14 ","pages":"Article 100927"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144668702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Twelve-month magnetic resonance imaging after anterior cruciate ligament reconstruction can identify risk factors for subsequent graft rupture and used to guide the return to sport. Results from a high-volume institution","authors":"Christian Lutz ,&nbsp;Fabio Mancino ,&nbsp;David A. Parker","doi":"10.1016/j.jisako.2025.100994","DOIUrl":"10.1016/j.jisako.2025.100994","url":null,"abstract":"<div><h3>Introduction</h3><div>Retear after anterior cruciate ligament reconstruction (ACLR) has been reported between 6% and 31% of cases, resulting in worse outcomes and increased risk of post-traumatic osteoarthritis. This study investigated whether postoperative magnetic resonance imaging (MRI) assessment, clinical outcomes, and return-to-sport test findings can help identify patients at higher risk of early graft retear.</div></div><div><h3>Methods</h3><div>Retrospective analysis of 430 patients who underwent primary ACLR using hamstring autograft between 2017 and 2022, with a minimum follow-up of 12 months. Baseline characteristics, intraoperative, and postoperative information were collected. Graft signal, tunnel widening and positioning were assessed through a 12-month MRI. Patients who experienced early graft retear were compared with a matched cohort with a ratio of 1:4. Continuous variables were compared. Logistic regression and analysis of variance were used to identify risk factors and association with retear. p values ​&lt; ​0.05 were considered significant.</div></div><div><h3>Results</h3><div>Of the 346 patients who met the inclusion/exclusion criteria, 19 experienced a graft rupture (5.4 ​%) after the 12-months follow-up. Of those, six patients were excluded due to missing postoperative 1-year MRI. Overall, 13 patients were included in the retear group and compared with 50 matched patients. The mean follow-up was 23.6 ​± ​4.2 months (range, 18–36 months). The 12-month MRI showed a greater signal-to-noise quotient (SNQ) in case of retear (2.93 vs 2.02; p ​= ​0.029). The analysis of variance showed a positive interaction between graft signal and retear (analysis of variance [ANOVA], p ​= ​0.028). Tunnel positioning was comparable between the groups, and not associated with retear. Similarly, tibial and femoral tunnel widening were comparable between the two groups and not associated with graft retear (ANOVA, p ​= ​0.733 and p ​= ​0.190). A greater proportion of patients had an anterior knee laxity &gt;2 ​mm at one year in the retear group (83.3% vs 38.8 ​%, p ​= ​0.058). However, mean laxity was comparable (2.55 ​mm vs 1.35 ​mm; p ​= ​0.189). No differences were noted for clinical scores and return-to-sport testing.</div></div><div><h3>Conclusion</h3><div>Higher graft signal on MRI at 12 months, indicating poorer graft healing, is associated with early anterior cruciate ligament retear. Resonance imaging after ACLR could be used to guide the follow-up management. Further research is required to confirm these preliminary findings.</div></div><div><h3>Level of evidence Ⅲ</h3><div>Retrospective comparative study.</div></div>","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":"14 ","pages":"Article 100994"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144972686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intertrochanteric derotational femoral osteotomy for pathological femoral anteversion without ligamentous instability. Technical note.","authors":"Vicente Sanchis-Alfonso, Erik Montesinos-Berry","doi":"10.1016/j.jisako.2025.100924","DOIUrl":"10.1016/j.jisako.2025.100924","url":null,"abstract":"<p><p>Pathological femoral anteversion is recognized as a cause of anterior knee pain. Derotational femoral osteotomy is a promising surgical intervention for anterior knee pain patients with excessive femoral anteversion. It is indicated in disabling anterior knee pain recalcitrant to conservative treatment with femoral anteversion >25° measured according to Murphy's method. However, robust evidence for a universal cutoff is lacking. It is contraindicated in patients with pathological femoral anteversion without clinical symptoms. Moreover, it is contraindicated for cosmetic reasons. This technical note describes our surgical technique of derotational osteotomy to correct pathological femoral anteversion. Femoral anteversion is problematic because it changes the direction of the quadriceps muscle. An intertrochanteric osteotomy allows a longer bone length for the thigh muscles to adjust to a new direction. The distal fragment of the femur is externally rotated until the correction desired in the preoperative planning is achieved. Good clinical outcomes and few complications have been reported with this surgical technique.</p>","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":" ","pages":"100924"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144609864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EDITORIAL: Celebrating the inaugural year of the global JISAKOS Excellence in Authorship Program","authors":"Nicole Simunovic ,&nbsp;Vikas Khanduja ,&nbsp;Olufemi R. Ayeni","doi":"10.1016/j.jisako.2025.100919","DOIUrl":"10.1016/j.jisako.2025.100919","url":null,"abstract":"","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":"13 ","pages":"Article 100919"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Robotic-assisted total knee arthroplasty leads to a higher proportion of better Kujala score and global patient-reported outcomes measurements compared to conventional surgery after a minimum of two years of follow-up","authors":"Jaime Duboy ,&nbsp;Roberto Negrin ,&nbsp;Julio Soto ,&nbsp;Maximiliano Hormazabal ,&nbsp;Gaspar Rojas ,&nbsp;Nicolas Jabes ,&nbsp;Maximiliano Barahona","doi":"10.1016/j.jisako.2025.100923","DOIUrl":"10.1016/j.jisako.2025.100923","url":null,"abstract":"<div><h3>Introduction</h3><div>Total knee arthroplasty (TKA) is a widely adopted surgical intervention for individuals with severe knee osteoarthritis. The integration of robotic assistance in TKA (R-TKA) has been proposed to enhance surgical precision and patient outcomes. Specifically, R-TKA has demonstrated enhanced consistency in radiological outcomes. However, consistent improvements in clinical results remains to be proven, as existing reports are heterogeneous, necessitating further investigation. This study compares patient-reported outcome measurements (PROMs) for TKA performed with conventional (C-TKA) versus R-TKA. Specifically, it evaluates the frequency of patients achieving Patient Acceptable Symptom State (PASS), Threshold for Improved Satisfaction (TIS), and Threshold for Improved Failure (TIF) for Western Ontario and McMaster Universities Arthritis Index (WOMAC), Kujala, and Knee Injury and Osteoarthritis Outcome Score quality of life (KOOS-QoL) questionnaires.</div></div><div><h3>Methods</h3><div>A retrospective analysis was conducted using institutional data from 2016 to 2021, involving 149 TKA cases (41 ​R-TKA, 108 ​C-TKA) with a minimum follow-up of two years. Patients completed validated PROMs, including WOMAC, Kujala, and KOOS-QoL. Propensity score matching adjusted for variables including age, sex, surgeon, side, and patellar resurfacing. The primary outcome was the proportion of patients surpassing PASS and TIS thresholds for WOMAC pain, WOMAC function, Kujala and KOOS-QoL.</div></div><div><h3>Results</h3><div>A total of 117 patients were contacted. Patients who underwent R-TKA showed a significantly higher proportion of favorable outcomes compared to those with C-TKA. Specifically, 30% more patients in the R-TKA group surpassed the Kujala threshold (95% CI: 18%-45%; 1–β ​= ​0.97), and 29% more met all thresholds simultaneously, indicating a successful TKA (95% CI: 13%-45%; 1–β ​= ​0.84); both were associated with moderate to large effect sizes. Although differences in PASS achievement for WOMAC pain (+5%), WOMAC function (+6%), and KOOS-QoL favored R-TKA and reached statistical significance, the study lacked sufficient statistical power to confirm these findings with high confidence.</div></div><div><h3>Conclusions</h3><div>Compared to C-TKA, R-TKA achieves a significantly higher proportion of patients with Kujala scores of 70 or above, as well as a higher proportion of patients meeting all targeted PROM thresholds at the two-year follow-up. These findings underscore the potential for R-TKA to optimize outcomes.</div></div><div><h3>Level of evidence</h3><div>Clinical study, Level III.</div></div>","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":"13 ","pages":"Article 100923"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144576557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A modified classification of tibial avulsion of the posterior cruciate ligament and its association with meniscal and ligament injuries","authors":"Amit Joshi,&nbsp;Alok Thaiba,&nbsp;Hiramani Paudyal,&nbsp;Umair Ahmad","doi":"10.1016/j.jisako.2025.100921","DOIUrl":"10.1016/j.jisako.2025.100921","url":null,"abstract":"<div><h3>Introduction</h3><div>Although Myer and McKeever's system is most commonly used to classify tibial avulsion of the posterior cruciate ligament (TAPCL) injuries, some publications report injuries that cannot be classified according to this system. Hence, there was a need to modify this classification. Management of TAPCL depends on the displacement of the fragment and associated meniscal and ligament injuries. The primary aim of this study was to propose a modified classification and assess the association of meniscus and ligament injuries with various types of TAPCLs.</div></div><div><h3>Methods</h3><div>This was a retrospective, analytical study of patients managed at our center between August 2019 and August 2024. After recording the demographic parameters, all the cases included were classified into five different types according to the modified classification. The incidence of meniscus and ligament injuries was recorded. Statistical analysis was performed using SPSS software. The normality of the data was tested using the Shapiro-Wilk test. Based on the normal distribution, data were expressed as mean ​± ​standard deviation or median (interquartile range). Categorical data were expressed as numbers (percentages). Comparative analysis used Pearson chi-squared tests with 2×3 and 2×2 contingency tables; odds ratios and 95% confidence intervals were calculated for 2×2 tables.</div></div><div><h3>Results</h3><div>Type III injuries were the most common ones (39.68%), followed by type II (23.58 ​%), type IV (17.92 ​%), and type V injuries (12.27 ​%). Thirty-two cases (30.19%) were categorized as types IV and V, which are not accounted for in the Myer and McKeever classification system. The overall incidence of meniscal injury was 24.53%, and 27.36% of patients exhibited associated ligamentous injuries. More importantly, 89.66% of ligament injuries and all meniscal injuries occurred in association with high-grade avulsion types (P ​&gt; ​0.05). Specifically, 73.07% of meniscal injuries and 51.72% of ligamentous injuries were observed in type IV and V cases.</div></div><div><h3>Conclusion</h3><div>One-third of posterior cruciate ligament tibial avulsion fractures in our cohort could not be classified using the Myer and McKeever classification system as 32 (30.19%) were categorized as type IV and V. Nearly one-third of the TAPCLs were found to have meniscus or other ligament injuries. A higher incidence of ligament and meniscal injuries was noted with higher-grade subtypes.</div></div><div><h3>Level of evidence</h3><div>IV.</div></div>","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":"13 ","pages":"Article 100921"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144567952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anteromedial structures, including the joint capsule sleeve and the deep collateral ligament, serve as a stabilizer and contribute to midflexion stability in cruciate ligament-deficient knees: A cadaveric study","authors":"Takashi Tsuda ,&nbsp;Kazunori Hino ,&nbsp;Tatsuhiko Kutsuna ,&nbsp;Kunihiko Watamori ,&nbsp;Tomofumi Kinoshita ,&nbsp;Yusuke Horita ,&nbsp;Masaki Takao","doi":"10.1016/j.jisako.2025.100913","DOIUrl":"10.1016/j.jisako.2025.100913","url":null,"abstract":"<div><h3>Introduction/objectives</h3><div>The specific contributions of the soft tissue attachments along the tibial rim remain poorly understood, while the importance of medial stability in the knee joint has been widely emphasized. This study aimed to evaluate the effect of releasing individual anteromedial stabilizers by replicating the soft tissue release typically performed in total knee arthroplasty.</div></div><div><h3>Methods</h3><div>Eight cadaveric knees were evaluated. Passive stress in each direction with six degrees of freedom was applied to the knees under image-free navigation monitoring. Measurements were taken following the sequential release of soft tissue structures: normal; anterior and posterior cruciate ligament resection; removal of the medial meniscus with 1 ​cm of anteromedial meniscotibial ligament release; 3 ​cm of anteromedial joint capsule release; and tibial attachment release of the deep collateral ligament. The entire section was performed sequentially on the identical cadaver knee.</div></div><div><h3>Results</h3><div>Anterior translation exhibited a statistically significant increase following dissection of the medial meniscus and 1 ​cm of the meniscotibial ligament at an intermediate flexion angle compared with the previous section. External laxity statistically significantly increased following dissection of the medial meniscus and 1 ​cm of the meniscotibial ligament overall flexion angle. Moreover, further external rotational laxity was observed following 3-cm anteromedial joint capsule release and subsequent deep collateral ligament release throughout an extensive flexion angle. Due to the dissection of each medial structure, gradual increases in external rotation laxity were observed in all sections, with statistically significant differences. Following deep collateral ligament dissection, laxity in each of the six degrees of freedom increased by approximately 20-30 ​% compared with the values observed after anterior and posterior cruciate ligament dissection.</div></div><div><h3>Conclusion</h3><div>Structures attaching to the anteromedial rim of the tibia serve as critical secondary stabilizers during midflexion in cruciate-deficient knees, with the anteromedial joint capsule sleeve and deep medial collateral ligament contributing to rotational stability despite the presence of an intact superficial medial collateral ligament.</div></div><div><h3>Level of Evidence</h3><div>V.</div></div>","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":"13 ","pages":"Article 100913"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144486293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The sport function subscale of the Copenhagen Hip and Groin Outcome Score could not be an indicator of postural balance in soccer players with groin pain","authors":"Fatma Chaari ,&nbsp;Nicolas Peyrot ,&nbsp;Sébastien Boyas ,&nbsp;Abderrahmane Rahmani ,&nbsp;Haithem Rebai ,&nbsp;Sonia Sahli","doi":"10.1016/j.jisako.2025.100906","DOIUrl":"10.1016/j.jisako.2025.100906","url":null,"abstract":"<div><h3>Objective</h3><div>This study aimed to investigate the association between the Copenhagen Hip and Groin Outcome Score (HAGOS) related to sport and recreation (Sport/Rec) and static and dynamic postural balance in soccer players with groin pain. We hypothesized that better postural balance outcomes would correlate with higher HAGOS Sport/Rec scores in these players.</div></div><div><h3>Methods</h3><div>Eighty-four soccer players with groin pain from seven soccer teams volunteered to take part in the study. An investigator collected static (stabilometric platform) and dynamic (Y-Balance Test (Y-BT)) postural balance, and patient-reported outcome measures (HAGOS) in the research laboratory. To investigate the association between the postural balance outcomes and the HAGOS Sport/Rec scores, Spearman’s correlation coefficient (<em>r</em>) was used.</div></div><div><h3>Results</h3><div>The included participants presented the following demographic information: age: 21.56 ​yrs (2.22), height: 1.78 ​m (0.06), body mass: 75.10 ​kg (8.41), body mass index: 23.80 ​km/m² (2.50). The HAGOS Sport/Rec scores showed a small significant positive correlation with the posteromedial reach distance for the Y-BT on both injured (<em>r</em> ​= ​0.21, p ​= ​0.04) and non-injured (<em>r</em> ​= ​0.22, p ​= ​0.04) limbs. However, no significant associations (p ​&gt; ​0.05) were found between these scores and the other Y-BT outcomes or with the static bipedal and unipedal postural balance findings.</div></div><div><h3>Conclusion</h3><div>Overall, the findings of the present study showed only small positive correlations between the posteromedial direction of the Y-BT and the HAGOS Sport/Rec scores. Given the observed small magnitude of correlations and the non-significant associations between the HAGOS Sport/Rec scores and the rest of the Y-BT outcomes or static postural balance outcomes, it appears that Sport/Rec may not serve as a comprehensive indicator for postural balance outcomes. Therefore, coaches and clinicians should consider combining postural balance assessments with the HAGOS Sport/Rec scores to comprehensively tailor their interventions to address both the subjective and objective functional aspects of groin pain in soccer players.</div></div><div><h3>Level of evidence</h3><div>3.</div></div>","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":"13 ","pages":"Article 100906"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144143898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Sparta Science force plate is reliable in assessment of recovery following anterior cruciate ligament reconstruction","authors":"W.T. Wilson ,&nbsp;J.A. Feller ,&nbsp;H.J. Klemm ,&nbsp;L.M. Batty ,&nbsp;J.C. Kirby ,&nbsp;K.E. Webster","doi":"10.1016/j.jisako.2025.100917","DOIUrl":"10.1016/j.jisako.2025.100917","url":null,"abstract":"<div><h3>Introduction</h3><div>The Sparta Science force plate provides kinetic information derived from movements such as vertical jump and balance tests. It has primarily been utilized to assess fitness amongst athletic and military populations. The outputs from this system may be useful in the assessment of return to sport (RTS) readiness following anterior cruciate ligament (ACL) reconstruction. The aim of this study was to determine the reliability of the Sparta Science metrics in ACL reconstruction patients and to compare these results with the healthy population data provided by the Sparta system.</div></div><div><h3>Methods</h3><div>Primary ACL reconstruction patients were recruited to undergo testing at 9 months postoperatively, excluding those with a history of ipsilateral or contralateral knee injury, or concomitant multiligament knee injury requiring surgery. Testing included knee laxity assessment, hop tests, isokinetic strength testing using a dynamometer, and then kinetic measures using the Sparta force plate. The force plate assessed double- and single-leg vertical jump and balance tasks, with each test performed twice after a 5-min rest. Metrics analyzed were jump height and Sparta-derived jump profiles and balance scores. Sparta-derived t-scores were used to compare against the population average for each test. Intraclass correlation coefficients (ICCs) were calculated to determine relative reliability.</div></div><div><h3>Results</h3><div>There were 74 patients, 44 (60%) males, mean age 25(±9) years, with mean pre-injury Marx scale 13.1(±3.4). The Sparta Science metrics showed moderate to excellent reliability for double-leg (ICC: 0.75-0.97) and single-leg vertical jump (ICC: 0.81-0.95), as well as balance assessments (ICC: 0.71-0.81). Patients scored lower than the healthy population norms for vertical jump tests but greater for balance tests. The jump test scores were significantly correlated with hop tests and quadriceps and hamstring strength.</div></div><div><h3>Conclusion</h3><div>The Sparta Science force plate is reliable when assessing patients after ACL reconstruction with ICCs showing moderate to excellent reliability. We identified kinetic deficiencies in vertical jump test performance and the results correlate with other return to sport testing methods. This demonstrates the Sparta system’s potential as a reliable option to augment traditional testing methods.</div></div><div><h3>Level of Evidence</h3><div>III.</div></div>","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":"13 ","pages":"Article 100917"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144340402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanofractures are inferior compared to other one-step treatments for chondral lesions in the patella: A controlled preclinical experiment in New Zealand rabbits","authors":"Juan Pablo Martinez-Cano ,&nbsp;Juliana Henao-Giraldo ,&nbsp;María Camila Gómez-Ayala ,&nbsp;Jacobo Triviño-Arias ,&nbsp;José Oscar Gutierrez-Montes","doi":"10.1016/j.jisako.2025.100897","DOIUrl":"10.1016/j.jisako.2025.100897","url":null,"abstract":"<div><h3>Introduction</h3><div>Patellofemoral chondral injuries pose a significant challenge due to their functional impact and potential progression to osteoarthritis. Bone marrow stimulation procedures, such as nanofractures and bone marrow aspirate (BMA), as well as use of autologous cartilage fragments (ACF), may enhance cartilage repair. This study aims to evaluate the efficacy of four one-step procedures plus a control group, for patellofemoral cartilage repair in an animal model.</div></div><div><h3>Methods</h3><div>A randomized preclinical trial was conducted in 20 New Zealand rabbits. A central chondral defect was created in the patella without affecting the subchondral bone. Knees were randomly assigned to five treatment groups: control, nanofractures, nanofractures-plus (fibrin glue), BMA and ACF. Histological assessment of defect filling and cartilage quality were performed using the International Cartilage Repair Society (ICRS) II score.</div></div><div><h3>Results</h3><div>All rabbits completed the follow-up period (20 weeks). The highest defect filling percentage was observed in the BMA group (61%, SD 36%), followed by nanofractures-plus (53%, SD 33%) and ACF (52%, SD 41%), followed by the control group (37%, SD 26%) and nanofractures (30%, SD 22%). Regarding tissue quality, the best mean ICRS II score was found in both nanofractures-plus (64.2%) and BMA (64.2%), followed by ACF (59.1%). Significant inferior cartilage quality was observed in nanofractures group when compared with other groups in certain items of ICRS II score.</div></div><div><h3>Conclusion</h3><div>All treatment strategies promoted some degree of cartilage regeneration; however, none achieved complete defect filling. The nanofractures group demonstrated the poorest outcomes in terms of subchondral bone and tissue integration; nanofractures-plus, BMA and ACF exhibited the greatest regenerative potential in terms of quality. BMA showed the highest defect filling. Given the limited regenerative capacity of these lesions and the high cost and limited accessibility of some treatments, exploring cost-effective alternatives is essential.</div></div><div><h3>Level of evidence</h3><div>Not applicable.</div></div>","PeriodicalId":36847,"journal":{"name":"Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine","volume":"13 ","pages":"Article 100897"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144054427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}