at the outset , it should be clearly understood that like reference numerals are intended to identify the same structural elements , portions , or surfaces consistently throughout the several drawing figures , as may be further described or explained by the entire written specification of which this detailed description is an integral part . the drawings are intended to be read together with the specification and are to be construed as a portion of the entire “ written description ” of this invention as required by 35 u . s . c . § 112 . a knee flexing device of the present invention is shown in fig1 . the knee flexing device 10 may include a u - shaped bar 20 having a curved or squared end 22 which may serve as a handle portion and may have two distal ends 24 which may be placed on the floor during use . the u - shaped bar 20 may have a first and a second armed portion which may be connected to a base portion . a cross - member 30 which may be square shaped may be positioned perpendicular to and may be adjustably and detachably affixed to the parallel arms or may be fixed to the of the u - shaped bar 20 . knobs 50 which may be threaded may be used to control lateral adjustment of cross - member 30 . the knee flexing device 10 according to the present invention may be formed preferably as a steel or metal member ; however any rigid material can be used including wood or plastic such as pvc . the u - shaped member 20 which may be formed from steel may be preferably formed from hollow tubing which may have an outer diameter which may have been preferably selected from a range of from one - half inch to one inch in diameter , with one inch being preferred . the two distal ends 24 may be equipped with anti - slipping members , preferably rubber feet 25 or a pivoting foot having a rubber base ( shown in fig7 ). a cross - member 30 which may be square shaped may be adjustably positioned between the distal ends of the u - shaped member 20 . the cross - member 30 may be preferably formed from rigid square hollow tubing such as steel , aluminum , wood , or a rigid plastic , and is preferably selected from a range of one - half inch to one inch and may correspond to the outer diameter of the u - shaped member 20 . the cross member 30 may include a round or oval cross - section to cooperate with a platform which may extend the substantial width of the cross member 30 and which may be angled with respect to the horizontal and may form a 45 ° angle with respect to the horizontal to facilitate a foot of the user / patient and may be formed from plastic or metal and may be attached through welding or other fasteners to provide a place for the patient to rest the foot of the patient . the cross - member 30 may be preferably coated with a non - slip surface 32 to prevent a user &# 39 ; s foot from slipping off of the cross - member during use . the cross - member 30 may be adjustably affixed to the u - shaped member 20 through a pair of tubular attachments 40 which may be round . fig2 and 3 show perspective views of the cross - member 30 with tubular attachments 40 . the tubular attachment 40 may be preferably formed from hollow tubing and may be constructed from a metal such as steel or aluminum , wood , or a rigid plastic , and may have an inner diameter sufficient to fit snuggly around the distal ends 24 of the u - shaped member 20 . the cross - member 30 may be permanently affixed to the tubular attachments 40 , preferably by a weld 35 . a hole may be drilled through the side of the tubular attachment 40 opposite the connection point of the cross - member 30 . a fastening device which may be a nut 45 which may be steel or other type of metal may be attached or welded by weld 42 to the attachment 40 such that the hole of the nut 45 may be in communication with the drilled hole on the attachment 40 . a knob ( not shown ) may be threaded into the welded nut 45 . when tightened into the nut 45 , the threaded knob applies pressure to the outer wall of the u - shaped member . the applied pressure holds the cross - member 30 in place and prevents it from slipping when in use . fig7 illustrates a pivoting foot member 25 which may pivot with respect to the distal end 24 of the u - shaped member 20 . the pivoting foot member 25 may remain stationary with respect to the support surface 26 as the distal end 24 of the u - shaped member 20 rotates in order to provide improved traction with the support surface 26 . fig8 illustrates a telescoping leg member 28 which may be adjustable and extend from the distal end 24 of the u - shaped member 20 . the telescoping leg member 28 may include a spring - loaded depressible and releasable pin 30 which may cooperate with an aperture through the distal end 24 to secure and release the telescoping leg member 28 from the distal end 24 . this allows the height of the u - shaped member 20 to be adjusted . fig4 through 6 illustrate a preferred application of the present invention . in operation , a user may place the ball of his or her foot on the middle of the cross - member 30 . the user then may place one or both hands on the handle portion 22 and slowly may pull the handle portion 22 toward his or her knee until the knee is properly stretched ( as shown using the dashed arrow ). the proper stretch may be a moderate intensity stretch wherein the user will feel some discomfort and a pulling feeling in the knee . stretching too far may cause pain and the user to reflexively withdraw from the motion . the user may control the speed and degree of pivoting of device 10 , which may directly correlate to the motion of cross - member 30 . manual control of the device may allow for careful manipulation of the speed of flexing and the overall range of knee motion . position of the cross - member 30 is adjusted using a pair of threaded knobs 50 . the position of the cross - member 30 may impact the excursion of the foot backward and hence the bend in the knee . raising the height of the cross - member 30 ( i . e from close to the terminus of the distal ends and the floor , to closer to the handle end and further from the floor ) may increase the difficulty of the exercise by increasing the knee angle if the distance of the device from the user remains constant . alternatively , the user can “ walk ” the device closer to his or her body . “ walking ” entails the user lifting on distal end and replacing it on the floor closer to his or her body . he or she then repeats the process on the other distal end . when a user is able to easily pull the handle to his or her knee ( as shown in fig6 ), it is time to “ walk ” the device closer to the body . this allows the user to maintain the continuity of the exercise and increase the difficulty without the added need of having to change the cross - member height . the invention being thus described , it will be evident that the same may be varied in many ways . such variations are not to be regarded as a departure from the spirit and scope of the invention and all such modifications are intended to be included within the scope of the claims .
an apparatus for flexing the knee comprising a u - shaped bar having two straight arms each having a distal end and a handle portion generally perpendicular to the straight arms and a perpendicular cross - member adjustably attached to the straight arms ; and a method for flexing the knee comprising the steps of providing a patient with device having a handle section and two parallel straight sections with a perpendicular cross - member attached to the straight sections , having the patient to place his or her foot onto the cross - member , and having the patient to pull the device toward the knee .