Metatarsal fracture neutralizer

Surgery: splint – brace – or bandage – Orthopedic bandage – Splint or brace

Reexamination Certificate

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Details

C602S012000, C128S882000

Reexamination Certificate

active

06183431

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a metatarsal fracture neutralizer to be worn principally on a patient's foot after the occurrence of a metatarsal fracture, in order to effectively immobilize and isolate the fractured metatarsal, thereby promoting healing thereof, while also permitting adjustability and adaptability, such as to accommodate for reductions in swelling, and also permits a substantial range of motion to be maintained with other associated joints, thereby minimizing joint atrophy and/or stiffness which can often lead to extended rehabilitation requirements.
2. Description of the Related Art
Limb extremities of the human body, such as the hand and foot, typically include a series of elongated, longitudinal bones, namely the metacarpal and metatarsal bones, which run along a length thereof and generally define a primary structure of that limb extremity. These longitudinal bones, however, are generally not substantially thick in diameter, and as a result of the substantial use and impact to which the limit extremities are subjected, can often be susceptible to fractures. Whether these fractures include a complete break or the more typical partial break, the only true rehabilitation remedy involves a prolonged period of isolation and immobilization so as to promote internal healing of the bone. Naturally, if the bone is not completely immobilized and maintained in a proper healing orientation throughout the healing process, a likelihood that the bone will heal into an improper orientation can result. As a result, a variety of systems and methods have been developed so as to secure and maintain the fractured longitudinal bone in a proper healing orientation for an extended period of time.
The typical rehabilitation aid utilized to heal conventional fractures is a cast placed on the limb extremity. Typically, such immobilizing casts are formed of plaster and function to immobilize the longitudinal bone as well as a remainder of the limb extremity. For example, in the circumstance of a metatarsal fracture, the cast typically extends completely about the foot, leaving only the patient's toes exposed, and extends over the leg and at least partially up the ankle, thereby completely immobilizing the foot containing the fracture. This typical cast is then maintained on the foot for an extended period of time so as to permit the properly set metatarsal contained within the cast to heal substantially. Indeed, the healing period is often quite extensive, the only relief from the cast coming after a pre-determined period of time when doctors typically remove an original cast so as to examine the progress of the healing, and then place a new cast on the foot.
Once the prescribed period of time within the cast has been met, the typical plaster cast is then removed from the patient's foot and an air cast or like shock absorbent system is placed on the foot so as to provide protection. This permits the doctor or other medical personnel to properly examine the bone which has been fractured and thereby ensure that complete healing is occurring. Often times, however, because of the nature of the immobilization achieved by conventional casts and braces, although rehabilitation of the bone itself may be completed once the fracture has been fully repaired, the overall rehabilitation process is far from over. In particular, because the entire foot has generally been immobilized so as to heal the metatarsal fracture, the other joints and portions of the foot may become atrophied or otherwise stiffened. A typical example is at the ankle joint wherein a lack of movement can cause a tissue build up therein which severely limits the range of motion for the ankle until a patient can rehabilitate for an extended period of time, gradually increasing their range of motion until the full range is once again achieved. Unfortunately, however, this can be a time consuming and often a difficult and painful process in order to rehabilitate a condition which is merely a side affect of the treatment of a bone fracture.
Along these lines, it would be highly beneficial to provide an improved metatarsal fracture neutralizer which can secure and maintain a fractured metatarsal, which has been set into a proper healing orientation, in that orientation for an extended period of time, yet which will permit remaining joints and portions of the foot to maintain a substantially free range of motion so as to minimize additional rehabilitation that is required once the fracture itself is healed. Moreover, such a system should be capable of accommodating for variations in the size and dimension of the foot itself, as typically result from swelling. For example, when the fracture initially takes place the foot is naturally substantially swollen and as a result has an increased diameter. Although it is ideal to place a permanent cast on the foot as quickly as possible, physicians are often reluctant to do so or must put on an initial cast with the knowledge that they must replace that cast in due time due to the fact that the swelling will naturally reduce after some time has past. Specifically, a secure and snug fitting cast when the foot is swollen will naturally be substantially loose fitting and can make the fracture subject to further displacement once the swelling goes down. As a result, it would be beneficial to provide a metatarsal fracture neutralizer which is capable of being continuously adjusted so as to maintain its secure fracture immobilizing fit around the foot and about the metatarsal containing the fracture.
It is noted that others in the art have attempted to devise braces and the like which specifically isolate on a bone fracture for healing purposes. It is noted, however, that such devices still do not provide a uniform compression of the longitudinal bone and in particular, the dorsum and plantar aspects of the patient's foot. Moreover, such devices may be primarily beneficial for later stages of rehabilitation, as they do not take into account the close proximately and muscle interconnection between adjacent metatarsals which can result in movement or displacement of even the most securely held fractured metatarsal if appropriate accommodations are not made.
Lastly, it is noted that one primary benefit to a plaster cast is its general adjustability to conform to different configurations encompassing a variety of foot sizes and shapes, thereby permitting it to be easily adjustable to fit any size patient or any fracture site of the patient. As a result, an improved metatarsal fracture neutralizer should also be structured to accommodate for varying spaces between metatarsals as well as varying sized feet. Additionally, such a device should permit weight to be born by the foot in some limited circumstances, thereby preventing muscle deterioration of the foot during the rehabilitation process. Indeed, such weight bearing capability is achieved in conjunction with the maintenance of the free range of motion of the various joints, thereby isolating the overall rehabilitation to the metatarsal and associated longitudinal bones which could impact or misorient the fractured metatarsal.
SUMMARY OF THE INVENTION
The present invention relates to a metatarsal fracture neutralizer. In particular, the metatarsal fracture neutralizer includes a first and second brace elements which are positioned in sandwiched relation about a foot containing the fractured metatarsal. The first and second brace elements are preferably adjustably secured with one another, thereby adjusting the spacing therebetween for accommodating for feet of varying thicknesses and/or for varying pressures to be exerted on the foot.
Additionally, the metatarsal fracture neutralizer of the present invention includes a plurality of neutralization pads. These neutralization pads are structured to be secured with the first and second brace elements, preferably in an adjustable fashion and in generally confronting relation with one another on the corresponding first and second b

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