PURPOSE The purpose was to clarify the load-bearing functions of the fibers of the femoral anterior cruciate ligament (ACL) attachment in resisting tibial anterior drawer and rotation. METHODS A sequential cutting study was performed on 8 fresh-frozen human knees. The femoral attachment of the ACL was divided into a central area that had dense fibers inserting directly into the femur and ante...

Background. Remnant preservation was developed as a routine procedure for posterior cruciate ligament (PCL) reconstruction, but it is not easy. Objectives. Our study aimed to evaluate the outcomes of a minimum 5-years follow-up of remnant preservation PCL reconstruction. Methods. The study was a prospective cohort analysis of 44 patients who underwent PCL reconstruction with remnant preservat...

We have assessed the biomechanical properties of a 'double-bundle' prosthetic ligament replacing the anterior cruciate in cadaver knees. We compared the results with those of single bundle 'over-the-top' and 'through-the-condyle' techniques, performing anterior drawer tests at 20 degrees and 90 degrees knee flexion. The over-the-top reconstruction gave better anteroposterior stability at 20 deg...

One hundred and fifty asymptomatic shoulders in 75 schoolchildren were studied. The shoulders were tested for instability and a hyperextensometer was used to assess joint laxity. Signs of instability were found in 57% of the shoulders in boys and 48% in girls; the commonest sign was a positive posterior drawer test which was found in 63 shoulders. A positive sulcus sign was found in 17 shoulder...

To store apples, refrigerate them in a plastic bag or in the crisper drawer. Check the stored apples often – one bad apple can spoil the whole bag! When you cut a raw apple, it may turn dark. To prevent this, dip the pieces in a fruit juice like lemon, orange, grapefruit, or pineapple before combining with other ingredients. Right now, apples are in pretty good supply. Whether you buy locally g...

Simultaneously presenting multiple users’ data on a single, shared display, such as an interactive tabletop, often results in visual clutter. One strategy to reduce clutter on horizontal surfaces in the physical world is to store objects in drawers. Items in drawers are hidden from view but are accessible when needed. Inspired by analogies with traditional desks and tables, we have developed ta...

Here we describe a high-performance imaging system for creating high-resolution images of whole insect drawers. All components of the system are industrial standard and can be adapted to meet the specific needs of entomological collections. A controlling unit allows the setting of imaging area (drawer size), step distance between individual images, number of images, image resolution, and shooti...

In this work a library for solving manipulator motion planning problems has been developed and an algorithm for imposing Cartesian constraints in single arm and dual arm operation has been proposed. The main algorithm is based on RRT [1]. The code has been tested with several single arm and dual arm robots. Our method is able to find collision free paths in environments occupied with obstacles....