Direct measurement of hoop strains in the intact and torn human medial meniscus

Jones, R Spencer; Keene, G; Learmonth, D.J.A.; Bickerstaff, D. R.; Nawana, Namal S.; Costi, John J.; Pearcy, Mark J.

doi:10.1016/0268-0033(96)00003-4

Cited by 179 publications

(140 citation statements)

References 23 publications

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“…These results are in concordance with those in the study by Jones et al, who performed in vitro measurements of circumferential strains in the medial menisci of cadaver knees 49 . Those authors placed strain gauges in the anterior, middle, and posterior sections of the medial meniscus and applied loads of three times body weight at 0°and 30°of flexion.…”

Section: Discussionsupporting

confidence: 93%

Dynamic Contact Mechanics of the Medial Meniscus as a Function of Radial Tear, Repair, and Partial Meniscectomy

Bedi

Kelly

Baad

et al. 2010

The Journal of Bone and Joint Surgery-American Volume

260

212

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Section: Discussionsupporting

confidence: 93%

Dynamic Contact Mechanics of the Medial Meniscus as a Function of Radial Tear, Repair, and Partial Meniscectomy

Bedi

Kelly

Baad

et al. 2010

The Journal of Bone and Joint Surgery-American Volume

260

212

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“…The intricately woven pattern of collagen fibrils is responsible for the strength of the meniscus, which maintains its shape and structure when axially loaded (43). Different types of meniscal tears may alter the circumferential extension of the meniscus that resists radial displacement (also known as hoop strain) when the meniscus is axially loaded (44), which leads to extrusion. In the literature, this effect has been evaluated in relation to each type separately (eg, horizontal, vertical, radial, complex, degeneration), as well as in various groups (eg, root tears vs nonroot tears).…”

Section: Discussionmentioning

confidence: 99%

Factors Associated with Meniscal Extrusion in Knees with or at Risk for Osteoarthritis: The Multicenter Osteoarthritis Study

Crema

Roemer²,

Felson³

et al. 2012

Radiology

190

172

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Purpose:To assess the associations of meniscal tears, knee malalignment, cartilage damage, knee effusion, and body mass index with meniscal extrusion. Materials and Methods:The Multicenter Osteoarthritis study is an observational study of individuals who have or are at risk for knee osteoarthritis (OA). The HIPAA-compliant protocol was approved by the institutional review boards of all participating centers, and written informed consent was obtained from all patients. All subjects with available baseline knee radiographs and magnetic resonance (MR) images were included. MR imaging assessment of meniscal morphologic characteristics, meniscal position, and cartilage morphologic characteristics with use of the Whole-Organ Magnetic Resonance Imaging Score system was performed by two musculoskeletal radiologists. Cross-sectional associations of severity of meniscal tears, knee malalignment, tibiofemoral cartilage damage, knee effusion, and body mass index with meniscal extrusion were assessed by using logistic regression, with multiadjustments when testing each predictor. Results:A total of 1527 subjects (2131 knees; 2116 medial and 2106 lateral menisci) were included. Medially, meniscal tears, varus malalignment, and cartilage damage were associated with meniscal extrusion, with odds ratios (ORs) of 6.3 (95% confidence interval [CI]: 5.0, 8.0), 1.3 (95% CI: 1.1, 1.7), and 1.8 (95% CI: 1.4, 2.2), respectively. Laterally, meniscal tears, valgus malalignment, and cartilage damage were associated with meniscal extrusion, with ORs of 10.3 (95% CI: 7.1, 14.9), 2.2 (95% CI: 1.5, 3.2), and 2.0 (95% CI: 1.3, 2.9), respectively. Conclusion:Meniscal tears are not the only factors associated with meniscal extrusion; other factors include knee malalignment and cartilage damage. Meniscal extrusion is probably an effect of the complex interactions among joint tissues and mechanical stresses involved in the OA process.q RSNA, 2012

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“…30 The effect of transsection on the hoop strain is quantitatively very similar anteriorly and posteriorly to an artificial lesion. 22 This finally suggests that the main portion of hoop stress is transferred by the circumferential fiber masses throughout the meniscus from one horn attachment to the other. In this case, the forces at both horn attachments should be in a similar range.…”

Section: Discussionmentioning

confidence: 99%

“…It is therefore reasonable to assume that circumferential tension (so-called ''hoop stress'') is a main component of the forces that act on the meniscus. 21 Jones et al 22 measured strains in the circumferential direction on human menisci by mounting miniature differential variable reluctance transducers at various sites of the meniscal periphery. They demonstrated that hoop strain is induced in the meniscus when the knee is subjected to simulated weight bearing.…”

Section: Discussionmentioning

confidence: 99%

Tensile forces at the porcine anterior meniscal horn attachment

Stärke

Kopf

Gröbel

et al. 2009

Journal Orthopaedic Research

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Tibiofemoral compression causes circumferential tension in the knee meniscus, which is transferred to the tibial bone at the anterior and posterior attachments. The objective of the study was to measure the resulting tensile forces at the horn attachment in a porcine model. The anterior horn attachment of the porcine medial meniscus (n ¼ 10) was separated from the surrounding bone with a core reamer. A force transducer was installed such that tensile forces acting upon the now mobile horn attachment could be measured. The tibiofemoral joint was loaded in compression, starting at a preload of 30 N, with three 150-N increments, giving 180, 330, and 480 N load. Flexion angles of 0, 30, and 608 were investigated. The average resultant tension at the horn attachment was 26.3, 40.6, and 55.4 N with full extension, 29.2, 47.8, and 62.2 N at 308 flexion and 30.1, 49.6, and 68.1 N at 608 flexion. The tibiofemoral compression had a significant effect on the tension (p < 0.001), whereas no influence of the flexion angle was found (p ¼ 0.291). The study demonstrates that tibiofemoral compressive loads cause considerable tensile forces at the anterior meniscal horn attachment. The data are of interest for models of the repair or replacement of the knee menisci. ß

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Direct measurement of hoop strains in the intact and torn human medial meniscus

Cited by 179 publications

References 23 publications

Dynamic Contact Mechanics of the Medial Meniscus as a Function of Radial Tear, Repair, and Partial Meniscectomy

Dynamic Contact Mechanics of the Medial Meniscus as a Function of Radial Tear, Repair, and Partial Meniscectomy

Factors Associated with Meniscal Extrusion in Knees with or at Risk for Osteoarthritis: The Multicenter Osteoarthritis Study

Tensile forces at the porcine anterior meniscal horn attachment

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