Survivorship analysis of total knee arthroplasty. Cumulative rates of survival of 9200 total knee arthroplasties.

Morgan, Mamdouh; Gillespie, Beryl; Dedrick, Daniel F.

doi:10.2106/00004623-199274020-00023

Cited by 6 publications

(3 citation statements)

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“…In females, dynamic deformation accelerated the progression of articular cartilage's degeneration, that led to a more severe KOA. According to statistics, approximately 60% of TKA patients were females. Our practice shows 77.18% of the included knees were knees of females, the result confirm the susceptibility of females.…”

Section: Discussionsupporting

confidence: 68%

Relationships between Morphological Changes of Lower Limbs and Gender During Medial Compartment Knee Osteoarthritis

Yang

Zheng

et al. 2019

Orthopaedic Surgery

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ObjectivesTo evaluate the dynamic changes of key morphology indicators of the lower extremities in the coronal plane with progressing medial compartment knee osteoarthritis (KOA) with an emphasis on gender‐dependent regional differences.MethodsThe radiographs of patients with non‐traumatic knee pain and varying degrees of genu varus were reviewed. Radiographs were studied in 1538 lower limbs of 883 consecutive patients who visited our hospital from January to July 2017; all patients had long‐standing anteroposterior image‐splicing radiographs taken of their lower limbs. Morphological indicators of bones and joints that can change the alignment of lower limbs or reflect cartilage wear and soft‐tissue relaxation were selected and measured with the help of picture archiving and communication systems. After comparing the data of different genders, the data of males and females was separated into three age groups, <40 years, 40–60 years, >60 years respectively, and then compared among age groups using the Kruskal‐Wallis and Mann–Whitney U tests. Scatterplots of age and all the measurements were drawn to determine the strength of the relations. The Pearson correlation test was performed to reveal correlations of measurements and age.ResultsFemoral bowing angle (FBA) and joint line convergence angle (JLCA) have obvious differences between different genders (P = 0.001, 0.000, respectively). This suggests that females have greater femoral curvature and joint space angle than males. Significant differences were found in hip‐knee‐ankle angle (HKA), FBA, distal femoral valgus resection angle (DFVRA), medial proximal tibial angle (MPTA), JLCA, and minimum joint space width (min‐JSW) by age groups in females (P = 0.000, 0.000, 0.000, 0.000, 0.003, 0.002, respectively). The difference of mechanical medial distal femoral angle (mMDFA) was significant with P values less than 0.05 deemed significant (P = 0.030). Significant correlations were found between age and all measurements (r = −0.166, 0.253, 0.270, −0.147, 0.089, −0.105, −0.076, respectively, P < 0.01). Whereas, the difference in min‐JSW by age group was the only significant one in males (P = 0.001), and no significant correlation was found between age and measurements (r = −0.107, 0.041, 0.134, −0.067, 0.079, −0.134, −0.098, respectively, P > 0.01).ConclusionsAs KOA progressed, both dynamic deformation of lower extremities and degeneration of articular cartilage could be found in females, while no obvious dynamic deformations were found in males. Dynamic deformation of lower extremities was the important feature and the major causative factor of KOA in females.

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Section: Discussionsupporting

confidence: 68%

Relationships between Morphological Changes of Lower Limbs and Gender During Medial Compartment Knee Osteoarthritis

Yang

Zheng

et al. 2019

Orthopaedic Surgery

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“…This is probably related to estrogen deficiency and osteoporosis around the time of the menopause, and intensification of deformation accelerates the progression of KOA [34]. It is estimated that 60% of patients who underwent TKA were females [35,36]. Our practice generated 1538 lower extremities, with 1187 knees of females (77.18%) and 351 knees of males (22.82%), all of which points to the same conclusion.…”

Section: Discussionmentioning

confidence: 66%

Dynamic deformation of femur during medial compartment knee osteoarthritis

et al. 2019

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ObjectivesThe aim of this study was to evaluate the morphological changes of the femur in the coronal plane in progressing varus gonarthrosis and to explore the interrelation of each component.Patients and methodsFrom January to July 2017, radiographic images of 1538 knees of 883 consecutive patients were collected and analyzed. We drew the alignments and measured the orientation angles of the lower extremities and compared the results among age groups for each sex. Correlation and regression tests were used to analyze the measurements.ResultsThere were significant differences in the neck-shaft angle (NSA), femoral bowing angle (FBA) and anatomic medial distal femoral angle (aMDFA) by age group in females, whereas the differences were not significant in males. In females, a positive correlation was found between age and the FBA and aMDFA (r = 0.253, 0.141, p<0.01), and a negative correlation was found between age and the NSA while the FBA was controlled (r = -0.065, p<0.05). The FBA was positively correlated with the NSA (r = 0.312, p<0.01) and aMDFA (r = 0.233, p<0.01). The NSA, FBA, and aMDFA together affected 72.2% of the mechanical medial distal femoral angle (mMDFA) (β = 0.071, -0.528, 0.803, p<0.01).ConclusionAs knee osteoarthritis (KOA) progressed, dynamic deformation of the femur was found in females, while no obvious changes were found in males. Femoral mechanical axis varus (mMDFA decrease) was the result of changes in the NSA, FBA and aMDFA. The deformation was throughout the femur rather than in a local area, as femur bowing can lead to corresponding changes in both ends of the femur. We provided a theoretical basis for TKA and knee-salvage treatment, and more attention should be paid to aging patients, especially females, in the preoperative protocol for orthomorphia.

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“…8 Over the past decades, the "traditional" MPP approach has proven to be a successful standard. 9 However, the associated anterior knee pain combined with the poor functional recovery indicated concerns in regards to patients' satisfaction. [10][11][12] Thus, many MIS approaches have been described.…”

Section: Introductionmentioning

confidence: 99%

Minimally invasive versus conventional approaches in total knee replacement/arthroplasty: A review of the literature

Tzatzairis

Fiska

Ververidis

et al. 2018

Journal of Orthopaedics

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Survivorship analysis of total knee arthroplasty. Cumulative rates of survival of 9200 total knee arthroplasties.

Cited by 6 publications

References 0 publications

Relationships between Morphological Changes of Lower Limbs and Gender During Medial Compartment Knee Osteoarthritis

Relationships between Morphological Changes of Lower Limbs and Gender During Medial Compartment Knee Osteoarthritis

Dynamic deformation of femur during medial compartment knee osteoarthritis

Minimally invasive versus conventional approaches in total knee replacement/arthroplasty: A review of the literature

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