The Lambrinudi arthrodesis for drop foot is a popular operation not only because it yields good results but also because fusion occurs more easily than in other methods. The Lambrinudi operation is usually indicated in the correction of talipes equinus or equinovarus. The chief features of the operation are : excision of a wedge of bone from the talus and calcaneum, including the subtalar joint...

Many of the surgical techniques currently used in the management of hal!ux valgus result in shortening of the first metatarsal. Although this is usually of little significance, if recurrence of the deformity demands further surgical correction, this may produce unacceptable shortening ; the first metatarsal head may no longer be capable of transmitting weight, which may lead to metatarsalgia or...

By virtue of Green's Theorem, it is shown that for the diffraction of anarbitrary two-dimensional incident pulse by a wedge of angle n, the ratio of the resultantvelocity potential to the corresponding value of the incident pulse at the corner ofthe wedge at any instant is equal to 2x/ (2x — n); and that for the diffraction of a three-dimensional pulse by a cone of solid angle u...

BACKGROUND The purpose of this study was to compare the results of Aescula and TomoFix plates used for biplanar open wedge high tibial osteotomy in medial osteoarthritis of the knee joint with varus deformity. METHODS A consecutive series of 50 cases of biplanar open wedge high tibial osteotomy were evaluated retrospectively. Group A contained 25 cases treated by using the Aescula plate, and ...

Multiple reflections between two surfaces of a window introduce a fixed pattern error in optical measurements. One way to remove these spurious reflections is to use a reasonably large wedge so that the interference fringes formed by the two surfaces are too dense for the detector to resolve. However, this method does not work if the wedge angle is small, e.g., several arcseconds. By tilting bo...

A new transducer beam model is developed for the generation of Rayleigh surface wave and Lamb plate waves by an angle beam transducer, which is one of the configurations commonly used for the generation of these wave types. The beam model is a fully 3-D model that takes into account the fields generated by the transducer acting on the surface of a wedge. The model also accounts for the leaky wa...

An ω-wedge is the (closed) set of all points contained between two rays that are emanating from a single point (the apex), and are separated by an angle ω < π. Given a convex polygon P , we place the ω-wedge such that P is inside the wedge and both rays are tangent to P . The ω-cloud of P is the curve traced by the apex of the ω-wedge as it rotates around P while maintaining tangency in both ra...

BACKGROUND According to the literature, closing and opening wedge high tibial valgus osteotomies can raise or lower the patella, and diffèrent methods of patella height measurement show similarly conflicting results. Clarification of this was thought to be important because there is much literature describing morbidity secondary to patella alta or patella infera (baja). Effects on tibial slope ...

Radiotherapy wedges constitute an important group within the generic classification of so-called Beam Modification Devices (BMD). Wedges are subdivided into Static, Dynamic, and Omni Wedges sug-groups. The standard static wedge attenuates the beam progressively, in such a way that the dose delivery is higher at the thin side, and lower at the broader side. The slope of the inferior surface has ...

We introduce multi-gradients including Laplace pressure gradient, wettable gradient and wettable different gradient on a high adhesion surface via special wedge-pattern and improved anodic oxidation method. As a result of the cooperative effect mentioned above, controlled directional motion of a droplet on a high adhesion surface is realized, even when the surface is turned upside down. The dro...