by way of illustrating a more complete appreciation and thorough understanding of the present invention and the advantages thereof , the following detailed description is given concerning the novel resilient pad and its functions with reference to the drawings . a pad 5 is shown in fig1 - 3 as a four - sided body of foam that is adapted to rest upon a mattress 23 for use with a leg fixator 19 . the pad 5 has opposing sides 6a , 6b of equal length and width 7a , 7b and about 2 . 5 inches thickness . dimensions of pad 5 are similar to the dimensions of a twin mattress or hospital bed allowing for it to rest upon a mattress bed for additional support . lying within the pad 5 shown in fig1 is a plurality of slits 8 defining removable sections . the slits 8 , eleven in all , outline a series of ten perforated sections which are removable . the slits 8 and , thus , the sections differ in width to accommodate the various sizes and placement of the adjustable external fixators . the ten perforated sections outlined by the eleven slits subdivide the foam pad 5 into a series of five portions . the first portion 14 consists of five 9 - inch wide slits and their corresponding sections . the slits 8 are in a parallel series four inches from the side 7b of the pad 5 and they penetrate substantially or completely through the pad 5 . thus , each section is a removable block of foam by tearing along sides 14a , 14b . if desired additional slits may be made along sides 14a , 14b for ease of removal . the series of 9 - inch slits also lies four inches from one side 6a , 6b of the pad 5 . the pad 5 shown is thirty - five inches wide so that the other end of the series of 9 - inch slits falls twenty - two inches from the opposing side 6a , 6b . the five 9 - inch slits also are separated from each other by a distance of four inches . a second portion 15 consists of one 10 - inch slit following the five previous 9 - inch slits by a distance of four inches . like the 9 - inch slits , the 10 - inch slit is also parallel with the sides 7a , 7b and penetrates substantially or completely through the pad 5 . thus , the corresponding section is a removable block of foam by tearing along sides 15a , 15b . the 10 - inch slit lies four inches from the side 6a and is twenty - one inches from the opposing side 6b . the third portion 16 comprises two 11 - inch wide slits which follow the previous series of slits . the 11 - inch slits also are parallel with the sides 7a , 7b of the pad 5 and lie four inches from the side 6a . the eleven - inch slits fall twenty inches from the opposing side 6b and penetrate substantially or completely through the pad 5 thereby allowing each section to be a removable block of foam by tearing along sides 16a , 16b . the fourth portion 17 consists of one 12 - inch wide slit and follows four inches from the previous portion 16 parallel with the sides 7a , 7b of the pad 5 and in line with preceding portions 14 , 15 , and 16 four inches from side 6a and nineteen inches from the other side 6b . also , the 12 - inch slit penetrates substantially or completely through the pad 5 . thus , the corresponding section is a removable block of foam by tearing along sides 17a , 17b . the fifth portion 18 consists of one 13 - inch slit four inches from side 6a and eighteen inches from opposing side 6b . the fifth portion 18 follows the same geometrical plane as the previous portions 14 , 15 , 16 , and 17 . it is parallel with the sides 7a , 7b of the pad 5 . the final slit of portion 18 is a distance of thirty inches from the top 7a of the pad 5 and penetrates substantially through the pad 5 allowing for its corresponding section to be a removable block of foam by tearing along lines 18a , 18b . the total distance between the eleven slits 8 which encompass the removable sections is forty inches . each removable section is four inches in length . the remaining thirty - four inches of the length of the pad 5 is encompassed by a 30 - inch distance from the 13 - inch slit of portion 18 to the top 7a of the pad 5 and the 4 - inch distance from the first 9 - inch slit to the bottom 7b of the pad 5 . with reference to fig3 the thickness 24 of the resilient pad 5 is about 2 . 5 inches . the length and the width of the pad 5 shown in fig1 is seventy - four inches and thirty - five inches , respectively . referring to fig2 of the accompanying drawings , a part of the resilient pad 5 is shown in use with the external fixator 19 being received within a pocket 20 formed from the removal of a plurality of portions 14 , for instance , by tearing or cutting the remainder of the foam . a limb 22 mounted with the external fixator 19 is shown resting on both sides of the pocket 20 . the features of fig2 are more readily apparent in fig3 which illustrates a cross - sectional view of fig2 taken generally along line 3 -- 3 of fig2 . shown in fig3 is the pad 5 resiliently supporting the limb 22 on both sides of pocket 20 . in accordance with features of the preferred embodiment , external fixator 19 is received by pocket 20 through the pad 5 and rests on the underlying support surface 23 directly . the resilient foam pad 5 has a sufficient density that enables resilient support for limb 22 mounted with the external fixating apparatus 19 . an open cell polyurethane foam having a density of about 1 . 9 is satisfactory for example . while the invention has been described with reference to a preferred embodiment , it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention . in addition , many modifications may be made to adapt a particular situation and material to teachings of the invention without departing from the central scope thereof . therefore , it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention , but that the invention will include all embodiments falling within the scope of the appended claims .
an adjustable resilient pad is disclosed that is used in conjunction with an orthopedic external fixator as means for supporting a patient &# 39 ; s extremity during therapeutic treatment .