“Crevasse” Lesions
نویسندگان
چکیده
منابع مشابه
“Crevasse” Lesions
Objective: The purpose of this article is to report on a distinctive pattern of linear femoral head chondral lesions that were observed in 7 patients who underwent hip arthroscopy for the treatment of mixed-type femoroacetabular impingement (FAI). Design: Between 2010 and 2012, 702 patients were treated with hip arthroscopy at our institution for symptomatic FAI. Among those patients, 7 were fo...
متن کاملA numerical investigation of surface crevasse propagation in glaciers using nonlocal continuum damage mechanics
[1] We use a nonlocal viscoelastic damage model to investigate the conditions that enable water-free surface crevasse propagation in grounded marine-terminating glaciers. Our simulations, on idealized rectangular ice slabs in contact with the ocean, show that crevasses propagate faster in thicker ice slabs. We find that: (1) the fraction of ice slab thickness penetrated by surface crevasses dec...
متن کاملStrain-rate estimates for crevasse formation at an alpine ice divide: Mount Hunter, Alaska
Crevasse initiation is linked to strain rates that range over three orders of magnitude (0.001 and 0.163 a) as a result of the temperature-dependent nonlinear rheological properties of ice and from water and debris inclusions. Here we discuss a small cold glacier that contains buried crevasses at and near an ice divide. Surface-conformable stratigraphy, the glacier’s small size, and cold temper...
متن کاملCrevasse patterns and the strain-rate tensor: a high-resolution comparison
Values of the strain-rate tensor r epresented at a 20 m length sca le a re found to explain the pattern and orientation of crevasses in a 0.13 km 2 reach of Worthington Glacier, Alaska, U.S.A. The flow fi eld of the reach is constructed from surveyed displacements of 110 markers spaced 2030 m apart. A velocity gradient m ethod is then used to calcul ate values of the principal strain-rate axes ...
متن کاملSediment Deposition at the Caernarvon Crevasse during the Great Mississippi Flood of 1927: Implications for Coastal Restoration
During the 1927 Mississippi flood, the levee was dynamited downstream of New Orleans creating a 2 km wide crevasse that inundated the Breton Sound estuary and deposited a crevasse splay of about 130 km2. We measured sediment deposition in the splay that consisted of a silty-clay layer bounded by aged peat below and living roots above. Based on coring, we developed a map of the crevasse splay. T...
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ژورنال
عنوان ژورنال: CARTILAGE
سال: 2013
ISSN: 1947-6035,1947-6043
DOI: 10.1177/1947603513513948