scholarly journals Morphometric analysis of tibial plateau

2019 ◽  
Vol 7 (4) ◽  
pp. 1261
Author(s):  
Gyanaranjan Nayak ◽  
Sitansu K. Panda ◽  
Prafulla K. Chinara
Keyword(s):  
Surgical Procedures ◽  
Knee Arthroplasty ◽  
Morphometric Analysis ◽  
Tibial Plateau ◽  
Knee Prosthesis ◽  
Articular Surface ◽  
Lateral Condyle ◽  
Maximum Width ◽  
Medial Condyle ◽  
Superior Surface

Background: Arthritis and injuries of the knee are frequently managed by knee arthroplasty. Knee prosthesis thus used needs population specific appropriate sizing. The aim of the study is to analyse tibial plateau morphometrically.Methods: The study included 46 human tibia bones (28 left and 18 right). The anteroposterior length and transverse width of superior articular surface of both tibial condyles along with the anteroposterior length and transverse measurements of the intercondylar area were noted with digital Vernier caliper. The data was tabulated and analysed.Results: For the superior articular surface of medial condyle, anteroposterior length was found to be 4.12±0.42cm on left side and 4.17±0.50cm on right side; maximum width was found to be 2.81±0.59cm on left side and 2.78±0.34cm on right side. For the superior surface of lateral condyle, the anteroposterior length was found to be 3.92±0.30cm on left side and 3.66±0.31cm on right side whereas maximum width was found to be 3.12±0.68cm on left side and 2.87±0.55cm on right side. Anteroposterior length of intercondylar area was measured to be 4.31±0.40cm on left side and 4.18±0.44cm on right side. The transverse measurement was recorded to be 3.12±0.68cm (left side), 2.87±0.55cm (right side) anteriorly; 1.25±0.23cm (left side), 1.31±0.20cm (right side) in the middle and 1.28±0.39cm (left side), 1.85±0.42cm (right side) posteriorly.Conclusions: The results will be helpful in orthopaedic surgical procedures involving knee.

scholarly journals Morphometric Analysis of Superior Articular Surface of Tibia in Dry Cadaveric Bones

2019 ◽  
Vol 15 (4) ◽  
pp. 287-290
Author(s):  
Ruku Pandit ◽  
Nitasha Sharma
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Tibial Component ◽  
Articular Surface ◽  
Baseline Data ◽  
Lateral Condyle ◽  
Medial Condyle ◽  
Significant Difference ◽  
Total Knee ◽  
The Right

Background: Total knee arthroplasty is the most cost effective and rapidly evolving technique. The success of procedure relies on appropriate sizing of tibial component, for which elaborate information of various dimensions of upper surface of tibia is mandatory. Hence, this study is aiming to generate baseline data on antero-posterior and transverse measurements of medial and lateral condyles and intercondylar area of upper surface of tibia. Methods: The study was conducted in 42 dry human cadaveric tibia with unidentified age and sex, in the Department of Anatomy, College of Medical Sciences and Teaching Hospital, Chitwan. The antero-posterior and transverse measurements of medial and lateral condyles and intercondylar area of tibia were recorded in millimeter (mm) with digital Vernier calipers. The data was analysed using SPSS version 16.0. Results: The antero-posterior and transverse measurements of medial condyle of tibia were 43.00±5.95 mm and 25.21±8.08 mm respectively on the right side and 45.33±5.36 mm and 27.43±8.57 mm respectively on the left side and that of lateral condyle were 37.94±5.64 mm and 25.21±8.71 mm respectively on the right side and 41.03±3.65 mm and 27.06±8.83 mm respectively on the left side. The antero-posterior and transverse measurements of intercondylar area of tibia were 47.49±6.31 mm and 15.71±3.93 mm respectively on the right side and 49.24±6.91 mm and 15.02±3.88 mm respectively on the left side. The variation in the measurements between right and left tibia showed significant difference only for antero-posterior measurement of lateral condyle (p<0.05). Conclusions: The study generates baseline data regarding various anthropometric measurements of upper surface of tibia, which will assist the orthopedic surgeon to create a resected bony surface identical to the tibial component of an implant in unilateral and total knee arthroplasty. Keywords: measurement; morphometric; superior articular surface; tibial condyles.

scholarly journals Morphometric Analysis of Proximal End of the Tibia

2019 ◽  
Vol 08 (02) ◽  
pp. 082-086
Author(s):  
Nadia Ahmad ◽  
Deepa Singh ◽  
Aksh Dubey ◽  
S. L. Jethani
Keyword(s):  
Knee Arthroplasty ◽  
Knee Prosthesis ◽  
Knee Injuries ◽  
Morphometric Parameters ◽  
P Value ◽  
Lateral Condyle ◽  
Medial Condyle ◽  
Tibial Condyle ◽  
Knee Deformity ◽  
Total Knee

Abstract Background Total knee arthroplasty and unicompartmental knee arthroplasty are frequently done procedures for the treatment of various forms of arthritis and knee injuries. The knee prosthesis, which is used for these procedures, requires adequate sizing specific to the population. Morphometric parameters of upper end of the tibia can be used to guide treatment and monitor outcome of total knee replacement surgeries. Information regarding morphometry of upper end of the tibia is important as it provides reliable method of assessing knee deformity. This article assesses different morphometric parameters of condylar and intercondylar surface of the tibia and to compile the results, analyze, and formulate a baseline data for future studies with relevance to Indian population. Materials and Methods The study group comprised of 60 adult human dry and processed tibia of both sides which are grossly normal and complete, obtained from the Department of Anatomy, Himalayan Institute of Medical Sciences. Morphometric measurements of the medial condyle, lateral condyle, and intercondylar area of tibia were recorded with vernier calipers with a least count of 0.01 mm. The dimensions were summarized as mean ± standard deviation. A p-value of < 0.05 was considered significant. Result Mediolateral and anteroposterior length were 66.33 and 42.52 mm, respectively. Conclusion Anatomical profile of tibial condyle for Indians is smaller, hence highlighting the need for sizing of prosthesis specific to the population in question.

Revision Total Knee Arthroplasty Using a Constrained Condylar Knee Prosthesis Combined with a Posterior Stabilized Articular Surface

2017 ◽  
Vol 31 (02) ◽  
pp. 197-201
Author(s):  
Shang-Wen Tsai ◽  
Cheng-Fong Chen ◽  
Po-Kuei Wu ◽  
Chao-Ming Chen ◽  
Wei-Ming Chen
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Knee Prosthesis ◽  
Articular Surface ◽  
Womac Score ◽  
Revision Total Knee Arthroplasty ◽  
Functional Score ◽  
Posterior Stabilized ◽  
Total Knee ◽  
The Mean

AbstractIntraoperative assessment of valgus–varus stability is crucial for choosing articular surfaces with different levels of constraint. Legacy constrained condylar knee (CCK) prostheses are readily available to assemble and use with a CCK articular surface or a posterior stabilized (PS) articular surface in revision knee arthroplasty surgeries. We wanted to validate outcomes of revision total knee arthroplasty (TKA) using legacy CCK prostheses combined with a PS articular surface. Thirty-seven patients were enrolled and followed up for more than 2 years. Range of motion (ROM), the Knee Society score (KSS), the Knee Society functional score (KSS-F), and the Western Ontario and McMaster Universities Arthritis Index (WOMAC) were used to evaluate outcomes. Follow-up was a mean of 86.5 months (range: 28–152 months). The mean age of the participants was 69.8 years (range: 31–86 years). The mean ROM was 110.5 degrees, the KSS was 86.2 points, the KSS-F was 68.3 points, and the WOMAC score was 22.6 points. Seven participants had implant failures: five because of delayed infections and two because of posterior dislocations. In conclusion, revision TKA using a CCK prosthesis combined with a PS articular surface might provide satisfactory mid-term outcomes. Delayed infection was the most common cause of implant failure. Dislocation might occur in middle-old or older patients despite careful intraoperative examination of valgus–varus stability, extension–flexion gap balancing, and signs of recurvatum.

A Cross Sectional Study to Assess Morphometry of Upper End of 80 Cadaveric Tibiae in a Tertiary Care Centre of Central India

2021 ◽  
Vol 8 (30) ◽  
pp. 2714-2718
Author(s):  
Sonali Rajesh Agichani ◽  
Bandita Medhi ◽  
Satish Kumar Harioudh
Keyword(s):  
Knee Joint ◽  
Tibial Component ◽  
Knee Prosthesis ◽  
Weight Bearing ◽  
Tertiary Care ◽  
Transverse Diameter ◽  
Lateral Condyle ◽  
Morphometric Data ◽  
Medial Condyle ◽  
Anteroposterior Diameter

BACKGROUND Osteoarthritis of knee joint is one of the major health problems, due to the evolution of erect posture. Upper weight bearing end of tibia is most vulnerable to damage in such patients. Total knee arthroplasty and unicompartmental arthroplasty are the most frequently done procedures, which require the use of adequate knee prosthesis. So, the present study was focused at providing morphometric data of upper articular end of tibia for designing the tibial component of prosthesis. METHODS The present study has been conducted in SAMC & PGI, Indore in the Department of Anatomy. 80 dry tibia bones were studied, of which 33 were right sided and 47 were left sided. Maximum anteroposterior (AP) length and width of upper surface of medial and lateral condyles and intercondylar area were measured with digital vernier caliper. RESULTS The average anteroposterior diameter was found to be greater than the transverse diameter for both the condyles and the intercondylar area, irrespective of side. Furthermore, the anteroposterior diameter and the transverse diameter of medial condyle was more than that of lateral condyle on both the sides. In intercondylar area, the anteroposterior diameter was found to be more on right side while transverse diameter was more on left side. CONCLUSIONS The present study demonstrates the accurate complete comparative measurements of all the parameters of upper surface of medial and lateral condyles and intercondylar area. The morphometric data obtained will provide guidelines for designing tibial component of knee prosthesis in central Indian population. Apart from clinical significance, the study has anthropological and medicolegal importance as well. KEYWORDS Morphometry, Upper End of Tibia, Knee Joint

scholarly journals FUNCTIONAL OUTCOME OF COMMINUTED PROXIMAL TIBIAL FRACTURE TREATED BY LOCKING PLATE

2020 ◽  
Vol 8 (11) ◽  
pp. 227-236
Author(s):  
Harikrishna Koya ◽  
Kalyan Kumar ◽  
T Upendra ◽  
Riyaz Sheik ◽  
K Satya Kumar
Keyword(s):  
Tibial Plateau ◽  
Tibial Fracture ◽  
Locking Plate ◽  
Fracture Pattern ◽  
Tibial Plateau Fractures ◽  
Lateral Condyle ◽  
Proximal Tibial Fracture ◽  
Medial Condyle ◽  
Intraarticular Fractures ◽  
Plateau Fracture

Most common intraarticular fractures in knee joint are tibial plateau fractures result from indirect coronal or axial compression forces. Tibial plateau fractures constitute 1% of all fractures in the human body and 8% fractures in the older people (1). Tibial plateau fractures include varied configuration of fracture pattern involving of medial condyle (10-23%), lateral condyle (55-70%), in both (11-30%) with variable articular depression. Improper restoration of plateau fracture fragments leads to axis deviation and deformity and premature.

Low-Degree Tibial Slope Angle Prevents Component Overhang by Enlarging the Lateral Plateau Surface Area in Total Knee Arthroplasty

2020 ◽  
Author(s):  
Mehmet Emin Simsek ◽  
Mustafa Akkaya ◽  
Safa Gursoy ◽  
Özgür Kaya ◽  
Murat Bozkurt
Keyword(s):  
Total Knee Arthroplasty ◽  
Surface Area ◽  
Knee Arthroplasty ◽  
Tibial Plateau ◽  
Slope Angle ◽  
Three Dimensional ◽  
Tibial Slope ◽  
Total Knee ◽  
Lateral Plateau ◽  
Gender Groups

AbstractThis study aimed to investigate whether overhang or underhang around the tibial component that occurs during the placement of tibial baseplates was affected by different slope angles of the tibial plateau and determine the changes in the lateral and medial plateau diameters while changing the slope angle in total knee arthroplasty. Three-dimensional tibia models were reconstructed using the computed tomography scans of 120 tibial dry bones. Tibial plateau slope cuts were performed with 9, 7, 5, 3, and 0 degrees of slope angles 2-mm below the subchondral bone in the deepest point of the medial plateau. Total, lateral, and medial tibial plateau areas and overhang/underhang rates were measured at each cut level. Digital implantations of the asymmetric and symmetric tibial baseplates were made on the tibial plateau with each slope angles. Following the implantations, the slope angle that prevents overhang or underhang at the bone border and the slope angle that has more surface area was identified. A significant increase was noted in the total tibial surface area, lateral plateau surface area, and lateral anteroposterior distance, whereas the slope cut angles were changed from 9 to 0 degrees in both gender groups. It was found that the amount of posteromedial underhang and posterolateral overhang increased in both the asymmetric and symmetric tibial baseplates when the slope angle was changed from 0 to 9 degrees. Although the mediolateral diameter did not change after the proximal tibia cuts at different slope angles, the surface area and anteroposterior diameter of the lateral plateau could change, leading to increased lateral plateau area. Although prosthesis designs are highly compatible with the tibial surface area, it should be noted that the component overhangs, especially beyond the posterolateral edge, it can be prevented by changing the slope cut angle in males and females.

scholarly journals Administrative Coding Methods Impact Surgical Site Infection Rates

2020 ◽  
Vol 41 (S1) ◽  
pp. s111-s112
Author(s):  
Mohammed Alsuhaibani ◽  
Mohammed Alzunitan ◽  
Kyle Jenn ◽  
Daniel Diekema ◽  
Michael Edmond ◽  
...  
Keyword(s):  
Cesarean Section ◽  
Surgical Procedures ◽  
Hip Prosthesis ◽  
Knee Prosthesis ◽  
Surgical Site Infections ◽  
Fold Increase ◽  
Abdominal Hysterectomy ◽  
Absolute Difference ◽  
Coding Method ◽  
The Impact

Background: Surveillance for surgical site infections (SSI) is recommended by the CDC. Currently, colon and abdominal hysterectomy SSI rates are publicly available and impact hospital reimbursement. However, the CDC NHSN allows surgical procedures to be abstracted based on International Classification of Diseases, Tenth Revision (ICD-10) or current procedural terminology (CPT) codes. We assessed the impact of using ICD and/or CPT codes on the number of cases abstracted and SSI rates. Methods: We retrieved administrative codes (ICD and/or CPT) for procedures performed at the University of Iowa Hospitals & Clinics over 1 year: October 2018–September 2019. We included 10 procedure types: colon, hysterectomy, cesarean section, breast, cardiac, craniotomy, spinal fusion, laminectomy, hip prosthesis, and knee prosthesis surgeries. We then calculated the number of procedures that would be abstracted if we used different permutations in administration codes: (1) ICD codes only, (2) CPT codes only, (3) both ICD and CPT codes, and (4) at least 1 code from either ICD or CPT. We then calculated the impact on SSI rates based on any of the 4 coding permutations. Results: In total, 9,583 surgical procedures and 180 SSIs were detected during the study period using the fourth method (ICD or CPT codes). Denominators varied according to procedure type and coding method used. The number of procedures abstracted for breast surgery had a >10-fold difference if reported based on ICD only versus ICD or CPT codes (104 vs 1,109). Hip prosthesis had the lowest variation (638 vs 767). For SSI rates, cesarean section showed almost a 3-fold increment (2.6% when using ICD only to 7.32% with both ICD & CPT), whereas abdominal hysterectomy showed nearly a 2-fold increase (1.14% when using CPT only to 2.22% with both ICD & CPT codes). However, SSI rates remained fairly similar for craniotomy (0.14% absolute difference), hip prosthesis (0.24% absolute difference), and colon (0.09% absolute difference) despite differences in the number of abstracted procedures and coding methods. Conclusions: Denominators and SSI rates vary depending on the coding method used. Variations in the number of procedures abstracted and their subsequent impact on SSI rates were not predictable. Variations in coding methods used by hospitals could impact interhospital comparisons and benchmarking, potentially leading to disparities in public reporting and hospital penalties.Funding: NoneDisclosures: None

An imaging measurement study of normal knee parameters in southeast China

2021 ◽  
Vol 17 ◽  
Author(s):  
Huitong Liu ◽  
Bingqiang Xu ◽  
Eryou Feng ◽  
Shizhang Liu ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Tibial Plateau ◽  
Femoral Condyle ◽  
Age Groups ◽  
Young Group ◽  
Normal Female ◽  
Valgus Angle ◽  
Significant Difference ◽  
Total Knee

Background: Imaging measurement of distal femur and proximal tibia has been the hot point in the research of total knee arthroplasty and prosthesis development, which is an important treatment for patients with advanced knee joint disease. This study retrospectively investigated the digital imaging measurement of normal knee parameters in southeast China and evaluated their clinical value. Methods: From February 2010 to May 2014, and in accordance with the inclusion criteria, a total of 677 knees (334 female knees and 343 male knees) were categorized into 3 age groups. Clinical and digital imaging data, including the distal femoral condyle diameter (FCD), tibial plateau diameter (TPD), the distance between the medial tibial plateau and fibular head (DPF), tibiofemoral valgus angle, distal femoral valgus angle, proximal tibia (PT) varus angle and the angle from femoral condyle to tibial perpendicular (FT), were measured by using AutoCAD 10.0 software. All measured variables were statistically analyzed by SPSS statistical software (version 18.0). Results: Data are presented as the mean ± standard deviation. The normal female and male femoral condyle diameter was (7.69 ± 0.46) cm and (8.68 ± 0.55) cm, while the normal female and male tibial plateau diameter was (7.66 ± 0.46) cm and (8.60 ± 0.55) cm, respectively. The normal female and male DPF was (0.76 ± 0.36) cm and (0.79 ± 0.36) cm. For females and males, the tibiofemoral valgus angle and distal femoral valgus angle were (3.89 ± 2.20) ° and (3.29 ± 2.12) °, (9.03 ± 2.18) ° and (8.25 ± 2.20) °. As the two methods to measure tibial plateau varus angle, PT angle of normal female and male was (4.29 ± 1.86) ° and (4.84 ± 2.23) °, while the normal female and male FT angle was (5.34 ± 1.95) ° and (5.52 ± 2.07) °. Based on the data obtained, we found significant differences between the two genders in terms of the femoral condyle diameter and tibial plateau diameter in all age groups (P < 0.01). The DPF parameter showed an obvious difference between the young group and the middle-aged group (P < 0.05), and no significant difference was observed between the sides and genders (P > 0.05). The distal femoral valgus angle showed statistical differences between genders in the left side of the young group and middle-aged group (P < 0.05), while angle PT and FT showed no significant difference (P > 0.05). Conclusion: A large number of knee measurements was obtained, and a local knee database was developed in this study. Imaging measurement prior to total knee arthroplasty is clinically important for increasing the accuracy and long-term efficacy of total knee arthroplasty. These data can also provide useful information for knee surgery and sports medicine as well as prosthesis development.

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