![]() The splint should be applied with the hand and wrist in a neutral position. Splints are meant to allow an injury to safely recover while positioned in a safe and natural resting position. Often the little finger will be attached to the ring finger in the splint to provide greater support and the wrist is immobilized (since the splint extends down the wrist). The splint will be applied to the outer edge of the little finger running alongside the ulnar bone (the opposite side of the thumb). Little finger (or "pinky") injuries - When the only injury occurs to the smallest finger of your hand, an ulnar gutter splint can be used and will allow range of motion to the other uninjured fingers, possibly allowing for continued day-to-day use of the hand.Alternatively, you can also use a tongue depressor cut to the appropriate size as a splint. Single finger injury - For injuries only to one finger, you can purchase aluminum splints with foam padding, which can be shaped to the right position.The thumb spica splint will immobilize the wrist and thumb, adhering to the policy of splinting above and below the injured joint. The interphalangeal joint of the thumb should be splinted in a straight position. Thumb injuries - For injuries solely to the thumb, a thumb spica splint can be used and will allow the uninjured fingers to function normally.The wrist should only have about 20 degrees of extension and the Metacarpophalangeal (MCP) about 10-15 degrees flexion (not straight). ![]() Place the split along the palm-side of the hand (volar side). Extensor tendon injuries - For this type of injury, the purpose of the splint will be to prevent any flexing of the hand and fingers.However, there are specific injuries that require slightly different splinting techniques, including: What follows in the next two methods are general guidelines. The type of splint depends on the injury. The bilinear characteristic of the plaster bandage explains its breakdown at the ends of a cast.Note that there are different splinting techniques. It was also determined that the plaster bandage load displacement curve is bilinear. This implies that the plaster cast may break down under loads that would leave the fiber glass cast intact. It was concluded that the plaster bandage, while initially stiffer than the fiber glass bandage, had much lower yield stress. It is with these tests that the two bandage materials were compared and evaluated. A second FEM model with loads applied at the periphery was performed to simulate the clinical observations of plaster bandage breakdown at the ends of a cast. A computer-based model using the finite element method (FEM) was developed for a cylindrical cast of both types and compared with the experimental findings. To determine the structural characteristics and stiffness of a cylindrical cast, each material was formed around a foam cylinder core and tested in a four-point bend jig. ![]() The materials were evaluated using tensile tests to determine the elastic modulus, yield strength, and ultimate tensile strength. In this study, two types of orthopaedic casting materials were evaluated: the Johnson & Johnson Specialist plaster bandage and the 3M Scotch-cast Plus fiber glass bandage. ![]()
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