Academic literature on the topic 'Mechanical medial proximal tibial angle'
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Journal articles on the topic "Mechanical medial proximal tibial angle"
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Yasukawa, Shinji, Koji Tanegashima, Mamiko Seki, Kenji Teshima, Kazushi Asano, Tomohiro Nakayama, Kei Hayashi, and Kazuya Edamura. "Evaluation of bone deformities of the femur, tibia, and patella in Toy Poodles with medial patellar luxation using computed tomography." Veterinary and Comparative Orthopaedics and Traumatology 29, no. 01 (January 2016): 29–38. http://dx.doi.org/10.3415/vcot-15-05-0089.
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SummaryObjectives: To evaluate morphological parameters of the femur, tibia, and patella in Toy Poodles with medial patellar luxation (MPL) using three-dimensional (3D) computed tomography (CT) and to compare these parameters between radiography and CT.Methods: Thirty-five hindlimbs of Toy Poodles were divided into normal and grade 2 and 4 MPL groups. The anatomical and mechanical lateral proximal femoral angle, anatomical and mechanical lateral distal femoral angle (aLDFA, mLDFA), femoral varus angle (FVA), inclination of the femoral head angle, procurvation angle, anteversion angle (AA), frontal angle of the femoral neck, mechanical medial proximal or distal tibial angle, mechanical cranial proximal or distal tibial angle, tibial plateau angle, tibial torsion angle (TTA), Z angle, relative tibial tuberosity width, ratio of the medial distance of tibial tuberosity to the proximal tibial width (MDTT/PTW), patella size, and the patellar ligament length: patellar length (L:P) ratio were evaluated on radiography and 3D CT.Results: The aLDFA, mLDFA, FVA, and TTA were significantly larger and the AA, MDTT/ PTW, and patella were significantly smaller in the grade 4 MPL group. There were significant differences in many parameters between imaging tools, and CT was considered less susceptible to potential artefacts and rotational deformities.Clinical significance: Toy Poodles with grade 4 MPL had significant femoral varus deformity, medial displacement of the tibial tuberosity, internal torsion of the proximal tibia, and hypoplasia of the patella.
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Palumbo Piccionello, Angela, Alberto Salvaggio, Antonella Volta, Fabiola Emiliozzi, Riccardo Botto, Fabrizio Dini, and Massimo Petazzoni. "Good Inter- and Intra-Observer Reliability for Assessment of Radiographic Femoral and Tibial Frontal and Sagittal Planes Joints Angles in Normal Cats." Veterinary and Comparative Orthopaedics and Traumatology 33, no. 05 (May 14, 2020): 308–15. http://dx.doi.org/10.1055/s-0040-1709694.
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Abstract Objective The aim of this study was to evaluate the inter- and intra-observer reliability of plain digital radiographs for assessing normal feline femoral and tibial joint reference angles in the sagittal and frontal planes. Study Design This was a cadaveric radiographic anatomical study. that involved 20 short-haired domestic adult cats. Materials and Methods Sagittal and frontal plane tibial and femoral joint angles of 40 limbs were measured twice by three observers with different levels of experience. Inter- and intraobserver reliability was determined by the intra-class correlation coefficient (ICC). An ICC > 0.75 was considered high correlation, 0.74 > ICC > 0.60 good correlation, 0.59 > ICC > 0.4 fair correlation and an ICC < 0.40 poor correlation. Results Mean ± standard deviation angles were anatomic lateral proximal femoral angle (aLPFA) 110.6 ± 3.6; anatomic lateral distal femoral angle (aLDFA) 91.9 ± 2.1; mechanical lateral proximal femoral angle; mLPFA (mLPFA) 107.3 ± 3.6; mechanical lateral distal femoral angle (mLDFA) 95.5 ± 1.7; femoral neck anteversion (FNA) 121.9 ± 4.1; anatomical caudal proximal femoral angle (aCPFA) 156.1 ± 3.9; anatomical caudal distal femoral angle (aCDFA) 101.4 ± 1.4; mechanical medial proximal tibial angle (mMPTA) 93.5 ± 1.2; mechanical medial distal tibial angle (mMDTA) 100.5 ± 2.3; mechanical cranial proximal tibial angle (mCrPTA) 113.1 ± 3.2; tibial plateau angle (TPA) 23.1 ± 3.2; mechanical cranial proximal tibial angle (mCrDTA) 86.7 ± 3.1.The intra-observer ICC indicated high correlation for 70% or more of the measurements. The inter-observer agreement among observers was high. These results show that the radiographic method for measuring femoral and tibial joint angles was good or high, except for FNA and mCrDTA. Conclusions This study provides some radiographic anatomical and mechanical joint angles of the femurs and tibias of normal domestic short-haired cats. We found good reliability for both intra- and interobserver measurements.
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Lusetti, Filippo, Andrea Bonardi, Chadi Eid, Anna De Bellesini, and Filippo Maria Martini. "Pelvic limb alignment measured by computed tomography in purebred English Bulldogs with medial patellar luxation." Veterinary and Comparative Orthopaedics and Traumatology 30, no. 03 (2017): 200–208. http://dx.doi.org/10.3415/vcot-16-07-0116.
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SummaryObjectives: The aim of the study was to describe the differences in pelvic limb alignment between healthy purebred English Bulldogs and those with medial patellar luxation through the measurement of femoral and tibial angles on computed tomography images in multiplanar reconstruction modality (MPRCT).Methods: Twenty-one purebred English Bulldogs were included and divided into two groups: one including healthy dogs (15 limbs) and the other including those with medial patellar luxation (24 limbs). Three different observers used MPR-CT to measure the following angles: anatomical lateral proximal femoral angle (aLPFA), anatomical lateral distal femoral angle (aLDFA), mechanical lateral proximal femoral angle (mLPFA), mechanical lateral distal femoral angle (mLDFA), angle of inclination of the femoral neck (AI), angle of anteversion (AA), mechanical medial proximal tibial angle (mMPTA), mechanical medial distal tibial angle (mMDTA), mechanical caudal distal tibial angle (mCdDTA), mechanical caudal proximal tibial angle (mCdPTA), and the tibial torsion angle (TTA). A Mann-Whitney U test was used to compare each variable in both groups.Results: The values for aLDFA and mLDFA in the medial patellar luxation population were significantly increased compared to healthy subjects (p <0.05). No significant differences were observed for the other variables.Clinical significance: In our population, an increased distal femoral varus was associated with medial patellar luxation. Our results could be useful to determine whether or not angular deformity of the femur is present and help determine the degree of correction necessary to restore alignment.ORCID iD:FMM: http://orcid.org/0000-0001-9615-2540
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Hette, K., R. S. Volpi, O. C. M. Pereira-Junior, M. J. Mamprim, V. Colombi da Silva, and S. C. Rahal. "Radiographic measurement of tibial joint angles in sheep." Veterinary and Comparative Orthopaedics and Traumatology 22, no. 03 (2009): 204–9. http://dx.doi.org/10.3415/vcot-08-07-0065.
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SummaryThe aim of this study was to establish normal reference values of anatomic and mechanical joint angles of the tibia in sheep at different age groups. Eighteen clinically healthy Santa Ines sheep were used. The animals were divided into three equal groups according to age: Group I – from six- to eight-months-old, Group II – 2-years-old, Group III – from three- to five-years-old. Anatomic medial proximal and lateral distal tibial angles, mechanical proximal and distal tibial angles, and anatomic caudal proximal and anatomic cranial distal tibial angles were measured from tibiae radiographs (n = 36). In the craniocaudal view, the mean values of the anatomic medial proximal, anatomic lateral distal, mechanical medial proximal, and mechanical lateral distal tibial joint angles were 89.6°, 86.6°, 91.4°, and 85.19° respectively. In mediolateral view, the mean values of the anatomic caudal proximal and anatomic cranial distal tibial angles were 64.55° and 105.69°, respectively. The joint orientation angles of the tibia in sheep showed similar values regardless of animal age for both anatomic and mechanical axes.
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Davies, John, and Albert Lynch. "Percutaneous Tibial Fracture Reduction Using Computed Tomography Imaging, Computer Modelling and 3D Printed Alignment Constructs: A Cadaveric Study." Veterinary and Comparative Orthopaedics and Traumatology 32, no. 02 (February 13, 2019): 139–48. http://dx.doi.org/10.1055/s-0039-1677751.
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Objective The main aim of this study was to evaluate a percutaneous method of bone alignment using a diaphyseal tibial fracture model. Materials and Methods Mid-shaft diaphyseal fractures were created in 12 large-breed canine tibiae. Interaction pins were inserted into the proximal and distal bone segments. Computed tomography scans of the fractured tibiae and pins were imported into three-dimensional (3D) modelling software and the fractures were virtually reduced. A multi-component 3D printed alignment jig was created that encompassed the pins in their aligned configuration. Orthogonal radiographs were taken after alignment jig application. Intact and post-alignment tibial lengths and joint angles were compared. Rotational alignment was subjectively evaluated. Results Post-alignment tibial lengths differed on the mediolateral and craniocaudal radiographs by an average of 1.55 and 1.43% respectively. Post-alignment mechanical medial proximal tibial angle, mechanical medial distal tibial angle and mechanical caudal proximal tibial angle had an average difference of 1.67°, 1.92° and 2.17° respectively. Differences in tibial length and joint angles were not significant (p > 0.05). Clinical Significance While in vivo evaluation is necessary, this technique to align diaphyseal fractures percutaneously using computer modelling and 3D printing is technically feasible and may facilitate the clinical use of minimally invasive osteosynthesis techniques.
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Cabassu, Julien. "Minimally Invasive Plate Osteosynthesis Using Fracture Reduction Under the Plate without Intraoperative Fluoroscopy to Stabilize Diaphyseal Fractures of the Tibia and Femur in Dogs and Cats." Veterinary and Comparative Orthopaedics and Traumatology 32, no. 06 (July 29, 2019): 475–82. http://dx.doi.org/10.1055/s-0039-1693413.
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Objective The aim of this study was to prospectively evaluate postoperative alignment when using fracture reduction under the plate (FRUP) during a minimally invasive plate osteosynthesis in tibial and femoral fractures, without intraoperative imaging, and report immediate postoperative complications. Materials and Methods After precise plate contouring and preoperative planning, FRUP was obtained with one cortical screw per fragment. Fractures were stabilized with a plate or plate rod. Tibial/femoral lengths, tibial plateau angles, mechanical medial proximal and distal tibial angles, anatomical lateral distal femoral angles, femoral curvatum and neck anteversion were evaluated on postoperative radiographs and contralateral bone. Tibial torsion was evaluated visually. Paired t-test were used to compare data. Immediate postoperative complications were recorded. Results Twenty-one tibial and 20 femoral fractures were stabilized (14 plate rod cases). Mean postoperative operated tibial length was 1.4% shorter (p = 0.001). Mean postoperative operated femoral length was 2% shorter (p = 0.04). Mean operated tibial plateau angle was 1.1° lower (p = 0.02). No difference in tibial torsion was noticed. No significant difference in mechanical medial proximal tibial angle, mechanical medial distal tibial angle, anatomical lateral distal femoral angle and femoral neck anteversion was observed. Mean operated femoral curvatum angle was 5.6° less (p = 0.01). Five cases (3 plate rod cases) required an immediate revision. Clinical Significance Minimally invasive plate osteosynthesis with FRUP leads to acceptable postoperative alignment. Correct pin placement should be evaluated.
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Chaja, Warda, Ihsane Mansir, Ibtissam Zouita, Dounia Basraoui, and Hicham Jalal. "Blount Disease: A Case Report and Review of the Literature." Scholars Journal of Medical Case Reports 9, no. 10 (October 30, 2021): 1026–28. http://dx.doi.org/10.36347/sjmcr.2021.v09i10.027.
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Introduction: Blount disease is an asymmetrical disorder of proximal tibial growth that produces a three-dimensional deformity. Tibia vara is the main component of the deformity. There is general agreement that two clinical forms should be distinguished based on age, infantile and adolescent, with 10 years as the cut-off. Case: We present a case of 11 year old girl admitted to our radiology department with chronic bilateral gonalgia and genu varum evoluting for a year. The clinical examination reveals bilateral varus deformity of the proximal tibia, a palpable prominence or “beaking” of the proximal medial tibial epiphysis and metaphysic. The diagnosis of blount disease has been confirmed on standard radiography. Conclusion: Blount's disease remains a rare disease whose etiology is still unknown, seems to involve hereditary and environmental factors explaining its very particular distribution. Radiological investigations are helpful to the diagnosis by showing medial varus malalignment of the tibial metaphysis. Many angles have been described. A mongthem, the mostuseful are the mechanical tibio-femoral angle, metaphyseal-diaphyseal angle (MDA) of Levine and Drennan, and bony tibial slope.
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Chaja, Warda, Ihsane Mansir, Ibtissam Zouita, Dounia Basraoui, and Hicham Jalal. "Blount Disease: A Case Report and Review of the Literature." Scholars Journal of Medical Case Reports 9, no. 10 (October 30, 2021): 1026–28. http://dx.doi.org/10.36347/sjmcr.2021.v09i10.027.
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Introduction: Blount disease is an asymmetrical disorder of proximal tibial growth that produces a three-dimensional deformity. Tibia vara is the main component of the deformity. There is general agreement that two clinical forms should be distinguished based on age, infantile and adolescent, with 10 years as the cut-off. Case: We present a case of 11 year old girl admitted to our radiology department with chronic bilateral gonalgia and genu varum evoluting for a year. The clinical examination reveals bilateral varus deformity of the proximal tibia, a palpable prominence or “beaking” of the proximal medial tibial epiphysis and metaphysic. The diagnosis of blount disease has been confirmed on standard radiography. Conclusion: Blount's disease remains a rare disease whose etiology is still unknown, seems to involve hereditary and environmental factors explaining its very particular distribution. Radiological investigations are helpful to the diagnosis by showing medial varus malalignment of the tibial metaphysis. Many angles have been described. A mongthem, the mostuseful are the mechanical tibio-femoral angle, metaphyseal-diaphyseal angle (MDA) of Levine and Drennan, and bony tibial slope.
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Kawasaki, Makoto, Ryuji Nagamine, Weijia Chen, Yuan Ma, Akinori Sakai, and Toru Suguro. "Proximal tibia vara involves the medial shift of the tibial articular surface." Journal of Orthopaedic Surgery 28, no. 1 (January 1, 2020): 230949902090259. http://dx.doi.org/10.1177/2309499020902592.
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Purpose: According to the concept of the constitutional varus, the tibial articular surface (TAS) has varus inclination. On the other hand, it has been reported that proximal tibia vara involved medial shift of the TAS. However, it has not been assessed whether varus inclination of the TAS has a correlation with the medial shift. We investigated whether varus inclination of the TAS has a correlation with the medial shift. If there is a correlation between two parameters, the influence of the medial shift of the TAS on the value of the hip–knee–ankle (HKA) angle and the femorotibial angle should be considered. Methods: A total of 112 patients who underwent total knee arthroplasty had anteroposterior view tibia digital radiograph on which five parameters were analyzed. Varus angle of the TAS, the distance between the mechanical axis and the anatomical axis on the articular surface, and the width of the articular surface were measured. Results: The more the proximal tibia had varus deformity, the more the TAS shift medially would be. Therefore, the mechanical axis does not match the anatomical axis. Because the HKA angle was assessed based on the concept that the mechanical and anatomical axes match on the tibia, this angle may not express the true alignment of the lower extremity in knees with proximal tibia vara. Conclusion: In varus knees, the proximal tibia has a medial shift of the TAS that may influence the value of the HKA angle.
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Palmer, Jonathan S., Luke D. Jones, A. Paul Monk, Michael Nevitt, John Lynch, David J. Beard, M. K. Javaid, and Andrew J. Price. "Varus alignment of the proximal tibia is associated with structural progression in early to moderate varus osteoarthritis of the knee." Knee Surgery, Sports Traumatology, Arthroscopy 28, no. 10 (January 21, 2020): 3279–86. http://dx.doi.org/10.1007/s00167-019-05840-5.
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Abstract Purpose Lower limb malalignment is a strong predictor of progression in knee osteoarthritis. The purpose of this study is to identify the individual alignment variables that predict progression in early to moderate osteoarthritis of the knee. Method A longitudinal cohort study using data from the Osteoarthritis Initiative. In total, 955 individuals (1329 knees) with early to moderate osteoarthritis (Kellgren-Lawrence grade 1, 2 or 3) were identified. All subjects had full-limb radiographs analysed using the Osteotomy module within Medicad® Classic (Hectec GMBH) to give a series of individual alignment variables relevant to the coronal alignment of the lower limb. Logistic regression models, with generalised estimating equations were used to identify which of these individual alignment variables predict symptom worsening (WOMAC score > 9 points) and or structural progression (joint space narrowing progression in the medial compartment > 0.7mm) over 24 months. Results Individual alignment variable were associated with both valgus and varus alignment (mechanical Lateral Distal Femoral Angle, Medial Proximal Tibial Angle and mechanical Lateral Distal Tibial Angle). Only the Medial Proximal Tibial Angle was significantly associated with structural progression and none of the variables was associated with symptom progression. The odds of joint space narrowing progression in the medial compartment occurring at 24 months increased by 21% for every one degree decrease (more varus) in Medial Proximal Tibial Angle (p < 0.001) Conclusions Our results suggest that the risk of structural progression in the medial compartment is associated with greater varus alignment of the proximal tibia. Level of evidence Level III, retrospective cohort study.
Book chapters on the topic "Mechanical medial proximal tibial angle"
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V. Patel, Deepak, Iciar M. Dávila Castrodad, Jennifer Kurowicki, Vincent K. McInerney, and Anthony J. Scillia. "Patellofemoral Instability." In Arthroscopy. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.99562.
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Recurrent patellofemoral instability is a common cause of knee pain and functional disability in adolescent and young adult patients, resulting in loss of time from work and sports. There are numerous factors that contribute to recurrent patellofemoral instability; these factors include tear of the medial patellofemoral ligament (MPFL), weakening or hypoplasia of the vastus medialis obliquus (VMO), trochlear dysplasia, increased tibial tuberosity-trochlear groove (TT-TG) distance (>20 mm), valgus malalignment, increased Q angle, malrotation secondary to internal femoral or external tibial torsion, patella alta, and generalized ligamentous laxity. A detailed history and a thorough physical examination are crucial to clinch an early, accurate diagnosis. Imaging studies play an important role to confirm the clinical diagnosis and also help to identify concomitant intra-articular pathologies. Initially, nonoperative management (including the use of physical therapy, patellar taping or brace) is offered to patients with acute, first-time patellar dislocations and most patients respond well to this mode of treatment. Surgical treatment is indicated for patients who have post-trauma osteochondral fracture or loose body; predisposing anatomical risk factors; recurrent, symptomatic instability; and who have failed an adequate trial of nonoperative management. Surgical treatments include MPFL reconstruction, proximal or distal realignment procedures, and trochleoplasty. Lateral release is often performed in combination with other procedures and seldom performed as an isolated procedure. An individualized case-by-case approach is recommended based on the underlying anatomical risk factors and radiographic abnormality.
Conference papers on the topic "Mechanical medial proximal tibial angle"
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Williams, John L., Pat D. Do, and Thomas L. Schmidt. "Tensile Properties of Bovine Proximal Tibial Growth Plate Cartilage." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0132.
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Abstract Seventy-one microtensile samples of bone-cartilage-bone from the lateral, central and medial portions of the proximal tibial growth plate were tested to failure at three speeds. Tensile strength, toe modulus, tangent modulus, and strain energy density varied by both location and strain rate, being stronger and stiffer on the lateral side and at higher strain rates. No differences could be detected in the ultimate strains by either region or strain rate.
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Galik, Karol, Patrick Smolinski, Stephen F. Conti, and Mark C. Miller. "Stress Analysis of the Polyethylene Component in Total Ankle Arthroplasty: Effect of Thickness." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42418.
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A three-dimensional finite element model was constructed of the distal tibia and fibula and a semi-constrained ankle prosthesis (Agility™ system). Contact elements were used at the interface between the talar component and the polyethylene liner and the proximal tibia and fibular were loaded in the in vertical direction. The minimal thickness of the polyethylene liner was varied from 3 mm to 8 mm in 1 mm increments. The results showed that the liner contact pressure in the sagittal plane mid-line decreased from 20 MPa to 14 MPa with increasing thickness while the medial edge contact pressure increased from 26 MPa to 30 MPa.
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Miller, Emily J., Mark W. Pagnano, and Kenton R. Kaufman. "Tibiofemoral Alignment for Total Knee Arthroplasty: Differences Between Static and Dynamic Tibial Plateau Loading." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19139.
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The surgical goal in total knee arthroplasty (TKA) is to obtain neutral mechanical alignment within three degrees [4]. This has been considered necessary to achieve optimal function, produce balanced medial and lateral loading distributions, and prolong implant longevity [7]. Under static loading, tibial-femoral alignment angle deviations of 3° have been shown to greatly alter the distribution of pressure and load between the medial and lateral tibial plateaus [13]. However, other studies have challenged the practice that coronal tibiofemoral alignment improves implant longevity [9,10]. These studies did not show a statistical difference in the number of revision surgeries between well aligned knees and mechanical alignment outliers (varus/valgus knees). While it has been suggested that accurate alignment allows for improved joint kinematics and improved outcomes in TKA patients [6], no studies have evaluated the effect of tibial-femoral alignment on tibial plateau loading distribution during gait in the TKA population. Therefore, the purpose of this study was to assess tibial plateau loading following TKA.
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Yang, Nicholas H., H. Nayeb-Hashemi, and Paul K. Canavan. "The Effects of Tibiofemoral Angle and Body Weight on the Stress Field in the Knee Joint." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41344.
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Osteoarthritis (OA) is a degenerative disease of articular cartilage that may lead to pain, limited mobility and joint deformation. It has been reported that abnormal stresses and irregular stress distribution may lead to the initiation and progression of OA. Body weight and the frontal plane tibiofemoral angle are two biomechanical factors which could lead to abnormal stresses and irregular stress distribution at the knee. The tibiofemoral angle is defined as the angle made by the intersection of the mechanical axis of the tibia with the mechanical axis of the femur in the frontal plane. In this study, reflective markers were placed on the subjects’ lower extremity bony landmarks and tracked using motion analysis. Motion analysis data and force platform data were collected together during single-leg stance, double-leg stance and walking gait from three healthy subjects with no history of osteoarthritis (OA), one with normal tibiofemoral angle (7.67°), one with varus (bow-legged) angle (0.20°) and one with valgus (knocked-knee) angle (10.34°). The resultant moment and forces in the knee were derived from the data of the motion analysis and force platform experiments using inverse dynamics. The results showed that Subject 1 (0.20° valgus) had a varus moment of 0.38 N-m/kg, during single-leg stance, a varus moment of 0.036 N-m/kg during static double-leg stance and a maximum varus moment of 0.49 N-m/kg during the stance phase of the gait cycle. Subject 2 (7.67° valgus tibiofemoral angle) had a varus moment of 0.31 N-m/kg, during single-leg stance, a valgus moment of 0.046 N-m/kg during static double-leg stance and a maximum varus moment of 0.37 N-m/kg during the stance phase of the gait cycle. Subject 3 (10.34° valgus tibiofemoral angle) had a varus moment of 0.30 N-m/kg, during single-leg stance, a valgus moment of 0.040 N-m/kg during static double-leg stance and a maximum varus moment of 0.34 N-m/kg during the stance phase of the gait cycle. In general, the results show that the varus moment at the knee joint increased with varus knee alignment in static single-leg stance and gait. The results of the motion analysis were used to obtain the knee joint contact stress by finite element analysis (FEA). Three-dimensional (3-D) knee models were constructed with sagittal view MRI of the knee. The knee model included the bony geometry of the knee, the femoral and tibial articular cartilage, the lateral and medial menisci and the cruciate and the collateral ligaments. In initial FEA simulations, bones were modeled as rigid, articular cartilage was modeled as isotropic elastic, menisci were modeled as transversely isotopic elastic, and the ligaments were modeled as 1-D nonlinear springs. The material properties of the different knee components were taken from previously published literature of validated FEA models. The results showed that applying the axial load and varus moment determined from the motion analysis to the FEA model Subject 1 had a Von Mises stress of 1.71 MPa at the tibial cartilage while Subjects 2 and 3 both had Von Mises stresses of approximately 1.191 MPa. The results show that individuals with varus alignment at the knee will be exposed to greater stress at the medial compartment of the articular cartilage of the tibia due to the increased varus moment that occurs during single leg support.