scholarly journals Difference in sex and the effect of a dominant lower extremity in the posterior tibial slope angle in healthy Japanese subjects

2021 ◽  
Vol 23 ◽  
pp. 8-12
Author(s):  
Yusuke Endo ◽  
Masahiro Takemura ◽  
Masahiko Monma ◽  
Hirotaka Mutsuzaki ◽  
Masafumi Mizukami
Keyword(s):  
Lower Extremity ◽  
Slope Angle ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
Posterior Tibial ◽  
Posterior Tibial Slope Angle ◽  
Japanese Subjects

scholarly journals Posterior Tibial Slope Angle Correlates With Peak Sagittal and Frontal Plane Knee Joint Loading During Robotic Simulations of Athletic Tasks

2016 ◽  
Vol 44 (7) ◽  
pp. 1762-1770 ◽  
Author(s):  
Nathaniel A. Bates ◽  
Rebecca J. Nesbitt ◽  
Jason T. Shearn ◽  
Gregory D. Myer ◽  
Timothy E. Hewett
Keyword(s):  
Knee Joint ◽  
Slope Angle ◽  
Frontal Plane ◽  
Acl Injury ◽  
Tibial Slope ◽  
Lateral Compartment ◽  
Posterior Tibial Slope ◽  
Posterior Tibial ◽  
Vertical Jumps ◽  
Posterior Tibial Slope Angle

Background: Tibial slope angle is a nonmodifiable risk factor for anterior cruciate ligament (ACL) injury. However, the mechanical role of varying tibial slopes during athletic tasks has yet to be clinically quantified. Purpose: To examine the influence of posterior tibial slope on knee joint loading during controlled, in vitro simulation of the knee joint articulations during athletic tasks. Study Design: Descriptive laboratory study. Methods: A 6 degree of freedom robotic manipulator positionally maneuvered cadaveric knee joints from 12 unique specimens with varying tibial slopes (range, −7.7° to 7.7°) through drop vertical jump and sidestep cutting tasks that were derived from 3-dimensional in vivo motion recordings. Internal knee joint torques and forces were recorded throughout simulation and were linearly correlated with tibial slope. Results: The mean (±SD) posterior tibial slope angle was 2.2° ± 4.3° in the lateral compartment and 2.3° ± 3.3° in the medial compartment. For simulated drop vertical jumps, lateral compartment tibial slope angle expressed moderate, direct correlations with peak internally generated knee adduction ( r = 0.60-0.65), flexion ( r = 0.64-0.66), lateral ( r = 0.57-0.69), and external rotation torques ( r = 0.47-0.72) as well as inverse correlations with peak abduction ( r = −0.42 to −0.61) and internal rotation torques ( r = −0.39 to −0.79). Only frontal plane torques were correlated during sidestep cutting simulations. For simulated drop vertical jumps, medial compartment tibial slope angle expressed moderate, direct correlations with peak internally generated knee flexion torque ( r = 0.64-0.69) and lateral knee force ( r = 0.55-0.74) as well as inverse correlations with peak external torque ( r = −0.34 to −0.67) and medial knee force ( r = −0.58 to −0.59). These moderate correlations were also present during simulated sidestep cutting. Conclusion: The investigation supported the theory that increased posterior tibial slope would lead to greater magnitude knee joint moments, specifically, internally generated knee adduction and flexion torques. Clinical Relevance: The knee torques that positively correlated with increased tibial slope angle in this investigation are associated with heightened risk of ACL injury. Therefore, the present data indicated that a higher posterior tibial slope is correlated to increased knee loads that are associated with heightened risk of ACL injury.

Posterior tibial slope angle is associated with flexion-type Salter–Harris II and Watson–Jones type IV fractures of the proximal tibia

2018 ◽  
Vol 27 (9) ◽  
pp. 2994-3000 ◽  
Author(s):  
Hiroshi Watanabe ◽  
Tokifumi Majima ◽  
Kenji Takahashi ◽  
Norishige Iizawa ◽  
Yasushi Oshima ◽  
...  
Keyword(s):  
Proximal Tibia ◽  
Slope Angle ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
Posterior Tibial ◽  
Type Iv ◽  
Salter Harris ◽  
Posterior Tibial Slope Angle

scholarly journals Ángulo de pendiente tibial posterior “Slope” en prótesis total de rodilla. Diferencias entre alineación Intra o Extramedular y su repercusión sobre el rango de movilidad postoperatorio.

2019 ◽  
pp. 143-148
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Slope Angle ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
Posterior Slope ◽  
Posterior Tibial ◽  
Total Knee ◽  
The Mean ◽  
Posterior Slope Angle

Introduction: The aim of this work was to compare the posterior tibial slope of the tibial component after performing a total knee arthroplasty, as an intramedullary or extramedullary guide was used during the surgical technique, as well as comparing the range of mobility obtained according to the Instrumentation used. Material and methods: We conducted a descriptive, retrospective, observational study of a series of 57 patients operated in our Center during 2012 and 2013, with the same model of total knee arthroplasty (Sigma PS® DePuy), divided into two homogeneous groups in terms of age, sex, degree of osteoarthritis evolution, the first with patients operated by extramedullary guidance and the second by intramedullary guidance. A radiographic study was performed, measuring the posterior slope angle in the sagittal plane. The range of mobility achieved after arthroplasty and implant survival was studied. Results: Together, in both groups, measurements of the posterior slope angle were made, which was 4.35º preoperative average. In groups, the mean postoperative posterior fall angle was 4.04 ° in the patients who underwent an EM guide, while those who underwent an IM guide the mean was 1.76 °; the differences being statistically significant. The range of mobility in the ATRs operated by intramedullary guidance was 102.7º on average (range 80-125º), while in the group where the extramedullary guide was used, it was 104.3º (range 80-130º) no these differences being statistically significant. Regarding the survival of the implant, during the study period two cases of patients undergoing surgery for the replacement of prostheses were found, both of which belonged to the “Extramedullary guide” group. Conclusion: The posterior drop angle, for the same PS prosthesis model, was statistically different according to the guide used, being within the 3-7º range in the group where the extramedullary guide was used; but despite these differences, no impact on the range of mobility was observed. Currently, it is recommended to restore the patient's posterior tibial slope, and in cases with a slope greater than 10º use a PS ATR.

scholarly journals The posterior tibial slope is mainly created by the posterior rotation of the tibial condyles

2020 ◽  
Vol 28 (3) ◽  
pp. 230949902097558
Author(s):  
Ryuji Nagamine ◽  
Makoto Kawasaki ◽  
Kang-Il Kim ◽  
Akinori Sakai ◽  
Toru Suguro
Keyword(s):  
Articular Surface ◽  
Slope Angle ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
Tibial Shaft ◽  
Anterior Cortex ◽  
Posterior Slope ◽  
Posterior Tibial ◽  
Tibial Condyle ◽  
Posterior Slope Angle

Purpose: Constitutional varus in the coronal plane is formed based on the Hueter-Volkmann’s law. The varus deformity occurs at the proximal metaphysis of the tibia and the tibial condyle rotates medially. In the sagittal plane, we hypothesized that the posterior slope angle of the tibial articular surface may also occur at the proximal metaphysis and the tibial condyle rotates posteriorly. The purpose of this study was to verify the hypothesis. Methods: A total of 208 patients who underwent TKA had lateral view proximal tibia digital radiograph on which seven parameters were analyzed. The posterior slope angle of the tibial articular surface relative to the anterior wall of the tibial condyle and that relative to the anterior cortex of the tibial shaft were assessed. Correlation between the position of the tibial condyle and the posterior slope angle of the articular surface were assessed. Results: The proximal tibial condyle itself did not have a posterior slope in the 86.5% of the participants. Posterior rotation of the tibial condyle created posterior slope of the tibial articular surface relative to the anterior cortex of the tibial shaft. The more tibial condyle was posteriorly rotated, the more the tibial articular surface shifted posteriorly. Conclusion: Study findings showed that the posterior tibial slope occurs at the proximal metaphysis of the tibia, and the tibial condyle rotates posteriorly. The posterior tibial slope involves the posterior shift of the tibial articular surface. The posterior tibial slope is mainly created by the posterior rotation of the tibial condyle.

scholarly journals Relationship between Coronal Alignment and Posterior Tibial Slope in the Lower Extremity

2014 ◽  
Vol 04 (04) ◽  
pp. 97-100
Author(s):  
Serhat Mutlu ◽  
Harun Mutlu ◽  
Olcay Guler ◽  
Gokhan Ozkazanli ◽  
Atilla Parmaksizoglu
Keyword(s):  
Lower Extremity ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
Coronal Alignment ◽  
Posterior Tibial

scholarly journals MEDIAL AND LATERAL POSTERIOR TIBIAL SLOPE IN THE SKELETALLY IMMATURE: A HUMAN CADAVERIC STUDY

2019 ◽  
Vol 7 (3_suppl) ◽  
pp. 2325967119S0013
Author(s):  
Nicolas G. Anchustegui ◽  
Audrey Rustad ◽  
Cooper Shea ◽  
Stockton Troyer ◽  
Aleksei Dingel ◽  
...  
Keyword(s):  
Tibial Plateau ◽  
Femoral Condyle ◽  
Slope Angle ◽  
Acl Injury ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
Skeletally Immature ◽  
Lateral Tibial Plateau ◽  
Posterior Tibial ◽  
Text Figure

Background: Recent research has identified posterior tibial slope as a risk factor for anterior cruciate ligament (ACL) injury, due to increased forces on the ACL with this tibial anatomy. Biomechanical studies suggest that altering a patient’s posterior tibial slope may lower the risk of ACL injury. Due to the presence of an open physis, guided growth may be used to reduce the posterior tibia slope in this high risk skeletally immature population. The primary purpose of this study was to quantify and measure the posterior tibial slope in pediatric knees. Methods: Forty-four pediatric knee CT scans were analyzed using OsiriX, an imaging software. Specimens analyzed were between the ages of 2 and 12 years of age. The proximal tibial slope for each specimen was measured on CT scan sagittal slices at 2 locations: 1) At the medial tibial plateau at the mid region of the medial femoral condyle, as determined on a coronal slice through the femoral condyle; 2) At the lateral tibial plateau at the mid region of the lateral femoral condyle, as determined on the coronal slice through the femoral condyle. The measurement of the posterior tibial slope was determined by placing two lines parallel to the diaphysis of the tibia, one located in the middle of the diaphysis and one located at the most posterior aspect of the diaphysis. The most proximal aspect of both the medial and lateral tibial plateau were then identified and angle measurements were taken in reference to the parallel lines. The angle measurements were plotted graphically by age in order to account for variability in development within age groups. The anterior medial and lateral tibia plateau widths were measured by identifying the mid region of the respective plateaus. From this point, the distance between the top of the tibial plate and the physis was measured. Results: The average posterior tibial slope angle for the medial and lateral tibial plateau were (5.53° ± 4.17°) and (5.95° ± 3.96°) respectively. Independent samples t-test and ANOVA indicate the difference between the posterior tibial slope angle of the medial and lateral tibial plateau were not statistically significant (p < 0.05). When plotted graphically by age, a slight negative trend between age and posterior tibial slope was identified. As age increases, the medial and lateral posterior tibial slope decreases. The mean anterior medial tibial plateau width and lateral tibial plateau width were .99 cm and 1.19 cm respectively. Discussion/Conclusion: ACL primary and secondary injury occur at very high rates in the skeletally immature, especially in females at age 11 and older, and in males at age 13 and older. This data set offers some preliminary values for posterior tibial slope in patients without a history of ACL injury, allowing for comparisons to patients with ACL Injury. Increased tibial slope is a risk factor for ACL injury. In the skeletally immature, one option to alter the tibial slope is the use of guided growth with implants to slow the anterior growth of the proximal tibia, reducing the posterior slope of the tibia, and possibly lower the risk of ACL injury in this high-risk population. [Figure: see text][Figure: see text][Figure: see text][Figure: see text][Figure: see text][Table: see text][Table: see text]

scholarly journals Posterior tibial slope measurement among Saudi population

2021 ◽  
Vol 13 (3) ◽  
pp. 60-63
Author(s):  
Mouad Alsowaigh ◽  
Mohammad A Arafah ◽  
Sultan Khaled Alharbi, ◽  
Omar Al Sultan ◽  
Adel Alshahrani ◽  
...  
Keyword(s):  
Surgical Intervention ◽  
Slope Angle ◽  
Tibial Slope ◽  
University Hospital ◽  
Posterior Tibial Slope ◽  
Saudi Population ◽  
Posterior Slope ◽  
Posterior Tibial ◽  
Congenital Deformities ◽  
The Mean

To measure the posterior slope of the tibia among the healthy Saudi population using Magnetic Resonance Imaging (MRI). A retrospective study review of 151 knee MRIs at King Khaled University Hospital, Riyadh, Saudi Arabia. All patients with no previous surgical intervention to their knees and did not suffer any bone injury around the knee were included. Three different orthopedic physicians (two senior residents, one orthopedic fellow) measured the posterior tibial slope (PTS) angle for all patients, and their average was taken for all readings using a sagittal T2 MRI cut. Patients with a history of previous surgical intervention to the knee joint, trauma involving distal femur or proximal tibia, osteoarthritis and inflammatory arthritis, and congenital deformities were excluded from the study. The mean age of patients was 28.15 in a range of 15-50 years. The posterior tibial slope mean and the median and the mode were 8.76, 8.73, 7.53, respectively. In addition, the mean angle (degree) in females was 9.69±4.02 and 8.76±4.15 in males. The Maximum and the minimum posterior slope angle calculated in these patients were respectively 19.73 and 0.3 degrees. Our findings are that the mean posterior tibia slope among the Saudi population is 8.76˚. The results showed the difference of PTS in Saudi people comparing to deferent communities. The association between the numbers of the posterior tibial slope with gender was tested and no significant correlation. In this study, we did not calculate weight and height in the cases as independent factors. Because of that, upcoming studies might consider these factors.

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