describing now the preferred embodiment of the invention , it is to be understood that the invention is being described as being used to replace the long bones , e . g . of humerous , ulna , femur and tibia , of the human body . however , the invention can also be used for small bone replacement . referring now to fig1 there is illustrated a view of one embodiment of the invention which is used to replace the long bones in the human arm , and which is generally referred to as the arm member 10 . the arm member 10 includes a screw 12 which is attached to a plug member 14 . plug member 14 is adapted to be received by an elongated cylindrical member 16 and which is held in place by conventional means such as an adhesive . cylindrical member 16 is telescopically inserted in a second cylindrical member 18 and is held in place with respect to cylindrical member 16 by conventional clamp means 20 . the second cylindrical member 18 includes a plurality of elongated slits 22 , all parallel to the longitudinal axis of the second cylindrical member 18 . the slits 22 facilitate the placement of the cylindrical member 16 within the opening defined by the second cylindrical member 18 . the second cylindrical member 18 is pivotally connected to an elbow member 24 by conventional screw means 26 . the terminating end of the second cylindrical member 18 , at the end connected to the elbow member 24 , is cut at an oblique angle at 28 , see fig1 and 4 . the oblique cut is parallel to the screw member 26 , and the cut is also made on the other side of the cylindrical member 18 . the cut 28 facilitates the movement of member 18 about the pivot point defined by the screw 26 . elbow member 24 generally resembles an elongated cylinder with a portion 30 cut away at one end thereof , said cutaway portion 30 providing an opening in which the second cylindrical member 18 can be rotated . the elbow member 24 is also provided with a slit 32 which is transverse to the longitudinal axis of the elbow member 24 . a third cylindrical member 34 is adapted to be received by the elbow member 24 at the terminating end adjacent to the slit 32 . the third cylindrical member 34 is held in place with respect to elbow member 24 by a screw member 36 which is inserted through the slit 32 and screwed into the third cylindrical member 34 . the third cylindrical member 34 is rotatably adjustable when inserted into the elbow member 24 until the desired position is achieved , at which time the screw member 36 is tightened thereby preventing any movement between the third cylindrical member 34 and elbow member 24 . the third cylindrical member 34 is further provided with longitudinal slits 38 which facilitate the reception of a fourth cylindrical member 40 . the other end of the fourth cylindrical member 40 is inserted into a curved cylindrical member 42 which represents the humerous head in human anatomical terms . the curved member 42 generally resembles an elbow and terminates at the end away from the fourth cylindrical member 40 in a plug 44 and screw 46 . in use , the arm system disclosed above and shown in fig1 through 5 , consists of an upper arm portion which includes the cylindrical members 34 and 40 and the lower arm portion which includes cylindrical members 16 and 18 . the upper arm and lower arm portions are joined by an elbow member 24 which allows both a flexing motion at 26 and a rotational motion at 36 . the lower arm portion is attached to the wrist by means of the screw 12 which in this instance can be a self - tapping screw . the upper arm portion is attached to the shoulder by means of a self - tapping screw 46 . the upper arm portion can be set to the length desired simply by sliding cylindrical member 40 into cylindrical member 34 . upon setting the desired length , the clamp 48 is tightened , thereby locking cylindrical members 34 and 40 in place with respect to each other . similarly , the lower arm portion can be adjusted to the desired length simply by moving the cylindrical member 16 in or out of cylindrical member 18 , depending on the length required by the arm on the cadaver . referring now to fig6 a prosthesis appliance used to replace the leg bones is shown generally at 50 . starting at the left portion of fig6 a screw , self - tapping in this instance , is shown at 52 attached to an extending cylindrical plug member 54 . the attachment may be made by conventional thread means or screw means . the plug member 54 is telescopically connected to a first elongated cylindrical member 55 . the end of the first elongated cylindrical member 55 away from said plug member 54 is telescopically inserted into a second elongated cylindrical member 56 which includes a plurality of longitudinal slits 58 and 60 at each end thereof . also located at the end where the slits 58 are positioned is a clamp member 62 . at the other end of the cylindrical member 50 , where the slits 60 are located , is a cylindrical member 64 which is adapted to be telescopically received by the cylindrical member 56 . the end of cylindrical member 64 is inserted into an elbow member 66 which then terminates in a plug member 68 . screw means 70 are attached to the plug member 68 . also , at the end of cylindrical member 56 where the slits 60 are located , is a clamp member 72 . generally speaking , as can be seen , the leg portion is made in three pieces . the upper portion is screwed to the hip by means of screw 70 . the lower portion is secured to the articulation of the foot by means of screw 52 . the proper length is obtained simply by sliding members 54 and / or 64 up or down . once the desired length is had , the clamps 62 and 72 are tightened . fig7 illustrates the skeletal system of the human body with arm and leg prostheses in place . it has been found that plastic pipe makes a very fine material in which to practice the invention . the prosthesis devices described herein are replacements for bones removed from a deceased donor body . by no means are these implied to be used in living human beings . materials that have been found to be suitable for use in this manner are plastic type materials , e . g . plastic pipe . accordingly , while the invention has been described with particular reference to specific embodiments thereof in the interest of complete definiteness it will be understood that it may be embodied in a variety of forms diverse from those shown and described without departing from the spirit and scope of the invention as defined by the following claims .
reconstructive orthopedic prosthesis devices for cadavers comprised of plastic tubing , elbows and fasteners , for use by undertakers and morticians . the devices are used in cadavers whose bones have been harvested for bone banks , in order to give the cadaver a normal appearance .