Use of contralateral lateral meniscus for medial meniscal allograft transplantation: a cadaveric study

2021 ◽  
Author(s):  
Tarun Goyal ◽  
Mukesh Singla ◽  
Souvik Paul
Keyword(s):  
Lateral Meniscus ◽  
Cadaveric Study ◽  
Meniscal Allograft Transplantation ◽  
Allograft Transplantation ◽  
Meniscal Allograft

Importance of Independent Measurement of Width and Length of Lateral Meniscus During Preoperative Sizing for Meniscal Allograft Transplantation

2011 ◽  
Vol 39 (7) ◽  
pp. 1541-1547 ◽  
Author(s):  
Jung-Ro Yoon ◽  
Taik-Sun Kim ◽  
Joon-Ho Wang ◽  
Ho-Hyun Yun ◽  
Hyungtae Lim ◽  
...  
Keyword(s):  
Lateral Meniscus ◽  
Meniscal Allograft Transplantation ◽  
Independent Measurement ◽  
Allograft Transplantation ◽  
Meniscal Allograft

Does Lateral Meniscal Allograft Transplantation Using the Keyhole Technique Restore the Anatomic Location of the Native Lateral Meniscus?

2016 ◽  
Vol 44 (7) ◽  
pp. 1744-1752 ◽  
Author(s):  
Nam-Ki Kim ◽  
Seong-Il Bin ◽  
Jong-Min Kim ◽  
Chang-Rack Lee
Keyword(s):  
Relative Position ◽  
Sagittal Plane ◽  
Lateral Meniscus ◽  
Coronal Plane ◽  
Absolute Position ◽  
Meniscal Allograft Transplantation ◽  
Allograft Transplantation ◽  
Meniscal Allograft ◽  
The Mean ◽  
The Absolute

Background: It is important to restore the normal anatomy of the native meniscus in meniscal allograft transplantation (MAT) for successful surgical results. Purpose/Hypothesis: The purpose of this study was to compare the anatomic positions of the anterior horn (AH) and posterior horn (PH) between the preoperative lateral meniscus and postoperative meniscal allograft after lateral MAT using the keyhole technique. We hypothesized that the keyhole technique could restore the preoperative anatomy of the native lateral meniscus. Study Design: Case series; Level of evidence, 4. Methods: Between December 2012 and December 2014, a total of 70 patients underwent lateral MAT using the keyhole technique. The anatomic positions of both horns of the native lateral meniscus and the meniscal allograft were measured on magnetic resonance imaging (MRI). Preoperative MRI was performed 1 day before lateral MAT, while postoperative MRI was performed 2 days after lateral MAT. A percentage reference method was used to measure the location of both horns. Results: For the AH, the mean delta value of the absolute position was 0.7 ± 1.8 mm (95% CI, 0.3-1.1 mm) in the coronal plane and 0.5 ± 1.6 mm (95% CI, 0.2-0.9 mm) in the sagittal plane, and the mean delta value of the relative position was 1.0% ± 2.3% (95% CI, 0.5%-1.6%) in the coronal plane and 1.1% ± 3.3% (95% CI, 0.2%-1.8%) in the sagittal plane. For the PH, the mean delta value of the absolute position was 2.4 ± 2.6 mm (95% CI, 1.8 to 3.1 mm) in the coronal plane and −0.1 ± 2.1 mm (95% CI, −0.6 to 0.4 mm) in the sagittal plane, and the mean delta value of the relative position was 3.3% ± 3.5% (95% CI, 2.5% to 4.2%) in the coronal plane and −0.3% ± 4.4% (95% CI, –1.3% to 0.8%) in the sagittal plane. Therefore, the AH moved by a mean of 0.7 mm laterally and 0.5 mm anteriorly (absolute values) and 1.0% laterally and 1.1% anteriorly (relative values) compared with the preoperative position. The PH moved by a mean of 2.4 mm laterally and 0.1 mm posteriorly (absolute values) and 3.3% laterally and 0.3% posteriorly (relative values) compared with the preoperative position. For the AH, the proportion of patients with an absolute delta value of ≥5 mm was 4.3% in the coronal plane and 2.9% in the sagittal plane. For the PH, the proportion of patients with an absolute delta value of ≥5 mm was 18.6% in the coronal plane and 4.3% in the sagittal plane. Conclusion: When comparing the position of the horns preoperatively and postoperatively, both horns showed mean relative postoperative positional changes of <5% of relative values and <5 mm of absolute values in both the coronal and sagittal planes. The keyhole technique in lateral MAT can reconstruct the lateral meniscus close to its native anatomic position by avoiding displacement of >5 mm in both the coronal and sagittal planes.

Meniscal Deficiency Period and High Body Mass Index Are Preoperative Risk Factors for Joint Space Narrowing After Meniscal Allograft Transplantation

2021 ◽  
Vol 49 (3) ◽  
pp. 693-699
Author(s):  
Sang-Min Lee ◽  
Seong-Il Bin ◽  
Jong-Min Kim ◽  
Bum-Sik Lee ◽  
Kuen Tak Suh ◽  
...  
Keyword(s):  
Risk Factors ◽  
Femoral Condyle ◽  
Joint Space ◽  
Preoperative Risk ◽  
Meniscal Allograft Transplantation ◽  
Time Points ◽  
Allograft Transplantation ◽  
Preoperative Risk Factors ◽  
Meniscal Allograft ◽  
The Difference

Background: Several studies have reported further reduction in joint space width (JSW) after meniscal allograft transplantation; some contributing postoperative factors are known, although preoperative factors remain unclear. This study is the first to analyze the preoperative risk factors for reduced JSW in patients after lateral meniscal allograft transplantation (LMAT). Hypothesis: Poor cartilage status and high preoperative body mass index (BMI) influence the postoperative progression of joint space narrowing. Study Design: Case-control study; Level of evidence, 3. Methods: We retrospectively studied 79 patients after LMAT who were observed for at least 5 years. JSWs on weightbearing flexion posteroanterior radiographs were measured preoperatively and at the 5-year mark. Differences in JSW were divided into more progression and less progression groups. The modified Outerbridge cartilage grades based on magnetic resonance imaging assessments were compared at subtotal/total meniscectomy and at LMAT to determine the difference between time points. Preoperative between-group differences in sex, age, surgical side, follow-up period, weight, height, BMI, and meniscal deficiency period were analyzed. Clinical outcomes were evaluated using the Lysholm score. Data were examined using univariate and multivariate logistic regressions. Results: Radiographically, the overall change in JSW from preoperative to follow-up was 0.58 mm (range, –0.23 to 1.83 mm). Reductions in JSW in the more progression and less progression groups were 0.94 ± 0.32 and 0.22 ± 0.21 mm (mean ± SD), respectively. There was no difference in cartilage status between the groups at meniscectomy or LMAT; however, changes between time points were significant on the lateral femoral condyle and lateral tibial plateau. Clinically, there were significant differences in weight, BMI, and meniscal deficiency period between the 2 groups. Postoperative Lysholm scores increased as compared with the preoperative scores, but there was no difference among the postoperative time points. In the univariate logistic regression risk analysis, weight, BMI, meniscal deficiency period, and the difference in cartilage status between time points for the lateral femoral condyle and lateral tibial plateau were identified as significant. In the subsequent multivariate logistic regression, BMI (odds ratio, 1.45; P = .016) and meniscal deficiency period (odds ratio, 1.21; P = .037) were the statistically significant factors. Conclusion: BMI and meniscal deficiency period were preoperative risk factors for JSW narrowing after LMAT. This suggests that the meniscal deficiency period from meniscectomy to LMAT may be shortened and that proper weight management can lead to successful LMAT.

scholarly journals THE EPIDEMIOLOGY OF PEDIATRIC MENISCAL ALLOGRAFT TRANSPLANTATION IN THE UNITED STATES

2021 ◽  
Vol 9 (7_suppl3) ◽  
pp. 2325967121S0004
Author(s):  
Haley E. Smith ◽  
Madeline M. Lyons ◽  
Neeraj M. Patel
Keyword(s):  
United States ◽  
Pediatric Population ◽  
The United States ◽  
National Database ◽  
Control Group ◽  
Meniscal Allograft Transplantation ◽  
Children's Hospitals ◽  
Allograft Transplantation ◽  
Meniscal Allograft ◽  
Children’S Hospitals

Background: Meniscal allograft transplantation (MAT) is an option to slow the progression of degenerative disease in the setting of substantial meniscal deficiency. This may be especially important in children and adolescents, but there is little literature on MAT in this population. Hypothesis/Purpose: The purpose of this study was to evaluate the epidemiology of MAT in the pediatric population, with specific attention to regional and demographic trends. Methods: The Pediatric Health Information System, a national database consisting of 49 children’s hospitals, was queried for all patients undergoing MAT between 2011 and 2018. Demographic information was collected for each subject as well as data regarding previous and subsequent surgeries. The database was also queried for all meniscus surgeries (including repairs and meniscectomies) performed during the study period. Demographic and geographic data from this control group were compared to that of children undergoing MAT. Univariate analysis was followed by purposeful entry multivariate regression to adjust for confounding factors. Results: A total of 27,168 meniscus surgeries were performed in 47 hospitals, with MAT performed 67 times in 17 hospitals. Twelve patients (18%) underwent a subsequent procedure after transplantation. In multivariate analysis, each year of increasing age resulted in 1.1 times higher odds of having undergone MAT rather than repair or meniscectomy (95% CI 1.03-1.1, p=0.002). Patients that underwent transplantation had 2.0 times higher odds of being female (95% CI 1.2-3.3, p=0.01) and 2.0 times higher odds of being commercially insured (95% CI 1.1-3.6, p=0.02). MAT was performed most frequently in the Northeast (4.9/1000 meniscus surgeries) and least often in the South (1.1/1000 meniscus surgeries, p<0.001). Furthermore, transplantation was more likely to be performed in larger cities. The median pediatric population of cities in which MAT was performed was 983,268 (range 157,253-3,138,870) compared to 662,290 (range 4,420-4,311,500) in cities where it was not (p=0.04). Conclusion: In the United States, patients that underwent MAT were older, more likely to be female, and have commercial insurance than those undergoing meniscus repair or meniscectomy. MAT was only done in 17/47 children’s hospitals that perform meniscus surgery and was most frequently performed in the Northeast and in larger cities. These trends highlight the need for further research, especially regarding differences along the lines of sex and insurance status.

Learning curve for lateral meniscal allograft transplantation: preventing meniscal extrusion

2021 ◽  
Author(s):  
Jung-Su Choe ◽  
Seong-Il Bin ◽  
Bum-Sik Lee ◽  
Jong-Min Kim ◽  
Ju-Ho Song ◽  
...  
Keyword(s):  
Learning Curve ◽  
Meniscal Extrusion ◽  
Meniscal Allograft Transplantation ◽  
Allograft Transplantation ◽  
Meniscal Allograft

scholarly journals Factors Predicting Meniscal Allograft Transplantation Failure

2016 ◽  
Vol 4 (8) ◽  
pp. 232596711666318 ◽  
Author(s):  
Ben Parkinson ◽  
Nicholas Smith ◽  
Laura Asplin ◽  
Peter Thompson ◽  
Tim Spalding
Keyword(s):  
Meniscal Allograft Transplantation ◽  
Allograft Transplantation ◽  
Meniscal Allograft
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