A survey was conducted to document the results of bracing and spinal fusion for scoliosis associated with osteogenesis imperfecta. Observations were made of 121 patients who underwent treatment by bracing or spinal fusion and who had been treated by 51 orthopaedic surgeons in. 14 countries. The average curve before bracing measured 43 degrees. The braces were ineffective in stopping progression...

The lingual orthodontic therapy though started in 1972, could not be popular till the beginning of 1990. In Nepal it does not have a history of more than a year. It is started in Dhulikhel Hospital for the first time in Nepal. Usually orthodontic therapy is meant for putting braces on the labial surface of the teeth which is called labial orthodontic system. Lingual orthodontic system is a pure...

Let p be a prime number and let n an integer not divisible by such that every group of order np has normal subgroup p. (This holds in particular for p>n.) Under these hypotheses, we obtain one-to-one correspondence between the isomorphism classes braces size set pairs (Bn,[τ]), where Bn runs over [τ] morphisms from multiplicative to Zp⁎ under certain equivalence relation. This gives classificat...

Abstract For a skew left brace ( G , rspace="4.2pt">? ? stretchy="false">) {(G,\cdot\,,\circ)} , the map ? : ? Aut ? {\lambda:(G,\circ)\to\operatorname{Aut}(G,\cdot\,...

In this paper, we introduce the theory of Rota-Baxter operators on Clifford semigroups, useful tools for obtaining dual weak braces, i.e., triples $\left(S,+,\circ\right)$ where $\left(S,+\right)$ and $\left(S,\circ\right)$ are semigroups such that $a\circ\left(b+c\right) = a\circ b - a +a\circ c$ $a\circ a^- -a+a$, all $a,b,c\in S$. To each algebraic structure is associated set-theoretic solut...