145 research outputs found
sj-pdf-1-hss-10.1177_15563316231211320 – Supplemental material for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition
No full textSupplemental material, sj-pdf-1-hss-10.1177_15563316231211320 for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition by Laura Robbins, Tom Farrey, Joseph Janosky, Vincent Minjares, Bert R. Mandelbaum and Andrew Pearle in HSS Journal®</p
sj-pdf-5-hss-10.1177_15563316231211320 – Supplemental material for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition
No full textSupplemental material, sj-pdf-5-hss-10.1177_15563316231211320 for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition by Laura Robbins, Tom Farrey, Joseph Janosky, Vincent Minjares, Bert R. Mandelbaum and Andrew Pearle in HSS Journal®</p
sj-pdf-2-hss-10.1177_15563316231211320 – Supplemental material for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition
No full textSupplemental material, sj-pdf-2-hss-10.1177_15563316231211320 for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition by Laura Robbins, Tom Farrey, Joseph Janosky, Vincent Minjares, Bert R. Mandelbaum and Andrew Pearle in HSS Journal®</p
DS_10.1177_0363546519873270 – Supplemental material for Implementation of the FIFA 11+ Injury Prevention Program by High School Athletic Teams Did Not Reduce Lower Extremity Injuries: A Cluster Randomized Controlled Trial
No full textSupplemental material, DS_10.1177_0363546519873270 for Implementation of the FIFA 11+ Injury Prevention Program by High School Athletic Teams Did Not Reduce Lower Extremity Injuries: A Cluster Randomized Controlled Trial by James R. Slauterbeck, Rebecca Choquette, Timothy W. Tourville, Mickey Krug, Bert R. Mandelbaum, Pamela Vacek and Bruce D. Beynnon in The American Journal of Sports Medicine</p
sj-pdf-4-hss-10.1177_15563316231211320 – Supplemental material for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition
No full textSupplemental material, sj-pdf-4-hss-10.1177_15563316231211320 for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition by Laura Robbins, Tom Farrey, Joseph Janosky, Vincent Minjares, Bert R. Mandelbaum and Andrew Pearle in HSS Journal®</p
sj-pdf-6-hss-10.1177_15563316231211320 – Supplemental material for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition
No full textSupplemental material, sj-pdf-6-hss-10.1177_15563316231211320 for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition by Laura Robbins, Tom Farrey, Joseph Janosky, Vincent Minjares, Bert R. Mandelbaum and Andrew Pearle in HSS Journal®</p
sj-pdf-3-hss-10.1177_15563316231211320 – Supplemental material for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition
No full textSupplemental material, sj-pdf-3-hss-10.1177_15563316231211320 for Preventing Anterior Cruciate Ligament (ACL) Injuries in High School Sports Participants: An Executive Summary of the Inaugural Meeting of the National ACL Injury Coalition by Laura Robbins, Tom Farrey, Joseph Janosky, Vincent Minjares, Bert R. Mandelbaum and Andrew Pearle in HSS Journal®</p
DS_10.1177_0363546519860522 – Supplemental material for Injury Surveillance in Major League Soccer: A 4-Year Comparison of Injury on Natural Grass Versus Artificial Turf Field
No full textSupplemental material, DS_10.1177_0363546519860522 for Injury Surveillance in Major League Soccer: A 4-Year Comparison of Injury on Natural Grass Versus Artificial Turf Field by Sean P. Calloway, David M. Hardin, Matthew D. Crawford, J. Michael Hardin, Lawrence J. Lemak, Eric Giza, Brian Forsythe, Yining Lu, Bhavik H. Patel, Daryl C. Osbahr, Michael B. Gerhardt, Bert R. Mandelbaum and William W. Baldwin in The American Journal of Sports Medicine</p
A note on moves and on irregular coverings of S4
No full textGiven a 3-fold simple (i.e. generic branched) covering p:M→S3, a standard modification (called "move C'' in this paper and due to the author and the reviewer in their theses in 1972) permits one to change the branch set but not the covering manifold M. Hence, given two simple coverings pi:M→S3, i=1,2, of degree three, one may ask whether it is possible to pass from p1 to p2 by a finite sequence of moves C or C−1. Using cobordism techniques developed by the author and the reviewer [cf. the author, Trans. Amer. Math. Soc. 245 (1978/79), 453–467; the reviewer, Manuscripta Math. 29 (1979), no. 1, 1–10;] it is shown that for M=4#(S1×S2) there are simple coverings p1 and p2 which cannot be related by any sequence of moves C, C−1. The proof relies on a result by A. Edmonds [Algebraic and geometric topology, Part 2 (Stanford, Calif., 1976), 13–18, Proc. Sympos. Pure Math., XXXII, Amer. Math. Soc., Providence, R.I., 1978;]. The question remains open for M=S3.Depto. de Álgebra, Geometría y TopologíaFac. de Ciencias MatemáticasTRUEpu
Lectures on 3-fold simple coverings and 3-manifolds
No full textThe author presents various ideas, proofs, constructions and tricks connected with branched coverings of 3-manifolds. After an introductory section on 2-fold branched coverings of S3 the main theme of 3-fold irregular coverings is introduced.
A short proof is given of the Montesinos-Hilden theorem concerning the presentation of a (closed, oriented) 3-manifold as an irregular 3-fold covering of S3. Coloured links, associated with irregular 3-fold coverings, are discussed, and moves on coloured links which do not alter the associated covering.
The last section contains an elegant proof of a theorem of Hilden and the author: Every closed oriented 3-manifold is a simple 3-fold covering of S3 branched over a knot so that the branching cover bounds an embedded disc. A consequence of this is the fact that every such 3-manifold is parallelizable. Finally the following result of H. M. Hilden , M. T. Lozano and the author [Trans. Amer. Math. Soc. 279 (1983), no. 2, 729–735;] is proved: Every closed oriented 3-manifold is the pullback of any 3-fold simple branched covering p:S3→S3 and some smooth map Ω:S3→S3 transversal to the branching set of p. This implies an earlier result of Hilden: the possibility to embed any closed oriented 3-manifold M in S3×D2 so that the composition with the projection in the first factor is a 3-fold simple covering.Depto. de Álgebra, Geometría y TopologíaFac. de Ciencias MatemáticasTRUEpu
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