Extension Arm Research Articles

A DEVICE FOR THE DETECTION OF MALINGERERS

I wish to present to the medical profession a new device for the detection of malingerers who claim impairment of eyesight. The apparatus consists of a face or head-rest (<i>R</i>) mounted on an adjustable floor-stand (<i>S</i>) which can be raised or lowered as required. At right angles to the upright thereof is a horizontal extension arm (<i>H</i>) which carries a narrow mirror (<i>M</i>). This looking-glass is mounted on a vertical arm (<i>V</i>) with a swivel joint (<i>J</i>) to permit backward inclination if needed. Below the mirror is a protractor (<i>P</i>) which is fixed to the vertical arm. Immediately over the protractor is a pointer or indicator (<i>I</i>) which rotates with the mirror as this is turned to the right or left. Above the pivotal bar (<i>B</i>) on which the mirror turns is a hand-nut (<i>N</i>) for fixing the glass at any desired degree on the protractor. This mechanism is

THE METABOLIC EXERCISE TOLERANCE TEST

In another communication,1a method was described for measuring the excess oxygen consumption during exercise, the oxygen debt and the time required for recovery. It was found that these measurements, particularly the excess oxygen consumption during exercise, were greater than normal in patients with organic heart disease and a history of some limitation of activity, even when no congestive heart failure was present. It was concluded that this test yields a useful objective quantitation of the cardiac capacity. The method previously described involved the use of an extension arm on the usual Roth-Benedict basal metabolism machine, and the calculation of results from multiple slopes recorded on a long paper record made by pasting three of the standard basal metabolism sheets end to end. In the present communication we are describing a simplified method which, in addition to other advantages, facilitates the calculation of results. METHOD The present method differs

Fracture of the olecranon

necessitates a Iong period of convaIescence which may be obviated by operative procedure. Many cases treated by the weIIknown method of retention of the arm in extension do not obtain a good functiona resuIt, particuIarIy as to extension. Surgica1 interference assures good motion and safeguards the power of extension. In deaIing with a bone so near the surface as the oIecranon there is IittIe operative risk.

IMPROVED JONES EXTENSION ARM SPLINT

The regular Jones extension arm splints are made for the right and for the left arm, with no provision for lengthening or shortening. I conceived the idea of sawing into the upper part of the splint, threading the ends with a right and left

AN IMPROVED ADJUSTABLE ELECTRIC LIGHT STAND FOR OPERATING ROOMS.

A feature of this standard is its universal adjustability. The whole stand can be rotated on its base. The height of the lamp can be regulated by the inner tube of the upright. The extension arm can be shortened or lengthened, tilted up or down or shortened and used vertically. The standard consists of a heavy tripod base mounted on rubber-tired castors. Attached to this is an upright piece consisting of two tubes, one telescoping in the other, the movement of the inner tube being controlled by a thumb screw. At the top of the inner tube a slot engages a U-shaped bracket, which can be tilted up or down and is retained in position by a winged screw. A short tube is brazed into the ends of the bracket. The upright piece of an ordinary goose-neck electric light stand is pushed through the tube in the bracket, where it

ELBOW FRACTURES AND THE X-RAY.

There are, no doubt, those who think we have reached the highest excellence in the treatment of most fractures, but none who are familiar with the treatment and results of elbow fractures and x -ray disclosures will be deluded by the brilliant achievements of this surgical age. There are still more things in surgery and medicine than are dreamt of in our philosophy. My purpose is to present for consideration some mooted questions in the treatment of these elbow injuries and the importance of the facts disclosed by the x -ray in the future treatment of fractures. Allis, years ago, called attention to the importance of maintaining the normal angle of the humerus and ulna in the treatment of fractures of the lower end of the humerus, because of its influence on the carrying function of the arm. He treats the arm in extension because he believes it best maintains