Meniscal Sizing Based on Gender, Height, and Weight

Stone, Kevin R.; Freyer, Abhi; Turek, Thomas J.; Walgenbach, Ann W.; Wadhwa, Sonali; Crues, John V.

doi:10.1016/j.arthro.2006.12.025

Cited by 68 publications

(60 citation statements)

References 19 publications

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“…Allograft sizing was based on donor-recipient sex, height, and weight which has been shown to be as accurate as radiologic sizing. 15,16 Surgical technique. The allograft transplantations were performed by a single surgeon (KRS) and the same surgical team.…”

Section: Methodsmentioning

confidence: 99%

Long-term survival of concurrent meniscus allograft transplantation and repair of the articular cartilage

Stone

Adelson²,

Pelsis³

et al. 2010

The Journal of Bone and Joint Surgery. British volume

108

153

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We describe 119 meniscal allograft transplantations performed concurrently with articular cartilage repair in 115 patients with severe articular cartilage damage. In all, 53 (46.1%) of the patients were over the age of 50 at the time of surgery. The mean follow-up was for 5.8 years (2 months to 12.3 years), with 25 procedures (20.1%) failing at a mean of 4.6 years (2 months to 10.4 years). Of these, 18 progressed to knee replacement at a mean of 5.1 years (1.3 to 10.4). The Kaplan-Meier estimated mean survival time for the whole series was 9.9 years (sd 0.4). Cox's proportional hazards model was used to assess the effect of covariates on survival, with age at the time of surgery (p = 0.026) and number of previous operations (p = 0.006) found to be significant. The survival of the transplant was not affected by gender, the severity of cartilage damage, axial alignment, the degree of narrowing of the joint space or medial versus lateral allograft transplantation. Patients experienced significant improvements at all periods of follow-up in subjective outcome measures of pain, activity and function (all p-values < 0.05), with the exception of the seven-year Tegner index score (p = 0.076).

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Section: Methodsmentioning

confidence: 99%

Long-term survival of concurrent meniscus allograft transplantation and repair of the articular cartilage

Stone

Adelson²,

Pelsis³

et al. 2010

The Journal of Bone and Joint Surgery. British volume

108

153

View full text Add to dashboard Cite

show abstract

“…However, these data could be important in the context of meniscal tissue engineering and transplantation [Stone et al, 1994;Pollard et al, 1995;Haut et al, 1998;Glowacki 2001;McDermott et al, 2004;Stone et al, 2007;Baker et al, 2009;Van Thiel et al, 2009;Yang and Temenoff, 2009;Elsner et al, 2010], which aim to restore normal (physiological) joint conditions. Recently, we [Wirth et al, 2010a] and others [Elsner et al, 2010;Swanson et al, 2010] developed techniques for quantitative measurement of meniscus morphology from magnetic resonance (MR) images (MRI), specifically, software for determining three-dimensional (3D) measures of tibial plateau coverage, meniscus size, and relative meniscus position (extrusion) for the total meniscus as well as its subregions (i.e.…”

Section: Introductionmentioning

confidence: 99%

Morphometric Differences between the Medial and Lateral Meniscus in Healthy Men – A Three-Dimensional Analysis Using Magnetic Resonance Imaging

Bloecker¹,

Wirth²,

Hudelmaier³

et al. 2011

Cells Tissues Organs

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The objective of this work was to characterize tibial plateau coverage and morphometric differences of the medial (MM) and lateral meniscus (LM) in a male reference cohort using three-dimensional imaging. Coronal multiplanar reconstructions of a sagittal double-echo steady state with water excitation magnetic resonance sequence (slice thickness: 1.5 mm, and in-plane resolution: 0.37 × 0.70 mm) were analyzed in 47 male participants without symptoms, signs or risk factors of knee osteoarthritis of the reference cohort of the Osteoarthritis Initiative. The medial and lateral tibial (LT) plateau cartilage area and the tibial, femoral and external surfaces of the MM and LM were manually segmented throughout the entire knee. This process was assisted by parallel inspection of a coronal intermediately weighted turbo spin echo sequence. Measures of tibial coverage, meniscus size, and meniscus position were computed three-dimensionally for the total menisci, the body, and the anterior and the posterior horn. The LM was found to cover a significantly greater (p < 0.001) proportion of the LT plateau (59 ± 6.8%) than the MM of the medial plateau (50 ± 5.5%). Whereas the volume of both menisci was similar (2.444 vs. 2.438 ml; p = 0.92), the LM displayed larger tibial and femoral surface areas (p < 0.05) and a smaller maximal (7.2 ± 1.0 vs. 7.7 ± 1.1 mm; p < 0.01) and mean thickness (2.7 ± 0.3 vs. 2.8 ± 0.3 mm; p < 0.001) than the medial one. Also, the LM displayed less (physiological) extrusion than the medial one. These data may guide strategies for meniscal tissue engineering and transplantation aiming to restore normal joint conditions.

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“…The meniscus is a tissue where rudimentary techniques have been developed to quantify geometry as a standard for tissue transplantation. 24,27,28,31 Using this new process enabled automated comparisons to these standards and yielded a host of additional data about other tissue dimensions and sample volume. Although these results are specific to regeneration of the meniscus, this approach is widely applicable to other tissues with complex geometry such as the ear, bones, and heart valve.…”

Section: Discussionmentioning

confidence: 99%

An Optical Method for Evaluation of Geometric Fidelity for Anatomically Shaped Tissue-Engineered Constructs

Ballyns

Cohen

Malone

et al. 2010

Tissue Engineering Part C: Methods

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Quantification of shape fidelity of complex geometries for tissue-engineered constructs has not been thoroughly investigated. The objective of this study was to quantitatively describe geometric fidelities of various approaches to the fabrication of anatomically shaped meniscal constructs. Ovine menisci (n ¼ 4) were imaged using magnetic resonance imaging (MRI) and microcomputed tomography (mCT). Acrylonitrile butadiene styrene plastic molds were designed from each imaging modality and three-dimensional printed on a Stratasys FDM 3000. Silastic impression molds were fabricated directly from ovine menisci. These molds were used to generate shaped constructs using 2% alginate with 2% CaSO 4 . Solid freeform fabrication was conducted on a custom openarchitecture three-dimensional printing platform. Printed samples were made using 2% alginate with 0.75% CaSO 4 . Hydrogel constructs were scanned via laser triangulation distance sensor. The point cloud images were analyzed to acquire computational measurements for key points of interest (e.g., height, width, and volume). Silastic molds were within AE10% error with respect to the native tissue for seven key measurements, mCT molds for six of seven, mCT prints for four of seven, MRI molds for five of seven, and MRI prints for four of seven. This work shows the ability to generate and quantify anatomically shaped meniscal constructs of high geometric fidelity and lends insight into the relative geometric fidelities of several tissue engineering techniques.

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Meniscal Sizing Based on Gender, Height, and Weight

Cited by 68 publications

References 19 publications

Long-term survival of concurrent meniscus allograft transplantation and repair of the articular cartilage

Long-term survival of concurrent meniscus allograft transplantation and repair of the articular cartilage

Morphometric Differences between the Medial and Lateral Meniscus in Healthy Men – A Three-Dimensional Analysis Using Magnetic Resonance Imaging

An Optical Method for Evaluation of Geometric Fidelity for Anatomically Shaped Tissue-Engineered Constructs

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