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Free standing rotator cuff development device
| Details |
Inventors: Greenwald, Dale R.;
Assignee:
Primary Examiner: Crow; Stephen R.
Assistant Examiner: Donnelly; Jerome
Attorney, Agent or Firm: Margolis; Donald W., Crabtree; Edwin H.
One embodiment is an upright, height adjustable, vertical stand having a freely rotatable elbow and forearm stabilizer, in the form of a receiving cup mounted on its top. The receiving cup is L-shaped, concave, and contoured to receive the elbow of a user, and includes a portion which is parallel to the axis of the forearm of a user, and a portion of the upper arm of a user to secure the upper and lower arm at a 90.degree. angle to one another, which results in the isolation of the rotator cuff muscles at the shoulder joint at any plane of movement. A pivot arm extends from the cup, and includes a hand receiving device adjacent to its end. The device may include a mechanism which allows internal and external shoulder rotation range of motion to be measured, as well as a device by which internal and external shoulder rotation range of motion can be limited. It can be used either without resistance, or with resistance from an external source. A mechanism which allows for adjustable settings of the plane at which the forearm is held during internal and external shoulder rotation may be provided. Various embodiments allow the pivot arm to be extended horizontally, vertically or at an angle from the vertical. In one embodiment a two station device is provided. |
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DETAILED DESCRIPTION It is therefore an object of the present invention to teach an exercise device which is useful for the development of rotator cuff musculature in an efficient, easy and effective way by isolating the rotator cuff muscles during internal and external shoulder rotation with and without external resistance.
It is therefore an object of the present invention to describe and teach an exercise method and device which is useful for the development of rotator cuff musculature by isolating the rotator cuff muscles during internal and external shoulder rotation against external resistance while fixing the upper heads of the ulna and radius bones of the lower arm of a user at the point where they join to form the elbow, while also fixing the associated scapula against movement, and then moving the lower arm internally and externally at a 90.
degree.
angle to the upper arm, to thereby cause the intermediate humerus bone, and especially the upper head of the humerus bone within the glenoid cavity, to be substantially isolated for movement during internal and external rotation of the lower arm against resistance.
It is another object of the present invention to teach such a device which includes an anatomically formed elbow cup and forearm stabilizer which holds and secures the lower arm in 90.
degree.
angle to the upper arm during internal and external rotation of the rotator cuff muscles.
Another object of the present invention is to teach the operation of such a device which can be placed adjacent the body of the user, and adjusted, after which the user positions his or her elbow firmly in an anatomically formed elbow securing cup secured by the use of a strap on the elbow cup with the lower arm positioned at 90.
degree.
from the upper arm, and then rotating a pivot arm inwardly against the resistance of a pivotal resistance assembly, thereby exercising the internal rotator cuff muscles, and then, when this movement is completed, rotating the pivot arm outwardly against the resistance assembly, thereby exercising the external rotator cuff muscles
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Exercise Devices 
