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Related Concept Videos

Fractures: Bone Repair01:27

Fractures: Bone Repair

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Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
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Bones of the Upper Limb: Radius01:09

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The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
The radius has a nail-shaped head, and a...
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Related Experiment Video

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Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects
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Do split paediatric forearm POP casts need to be completed? A biomechanical study.

Nimesh Patel1, Lance Wilson2, Guy Wansbrough3

  • 1Torbay Hospital, Torquay, UK.

Injury
|April 26, 2015
PubMed
Summary
This summary is machine-generated.

Split Plaster of Paris (POP) splints offer adequate stability for paediatric forearm fractures without needing immediate spreading. This simplifies treatment, saving time and resources while ensuring patient safety.

Keywords:
Paediatric forearm fracturePlaster of Parismechanical failuresplit plaster

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Area of Science:

  • Orthopaedic surgery
  • Biomechanical engineering
  • Paediatric trauma

Background:

  • Displaced paediatric forearm fractures commonly treated with circumferential Plaster of Paris (POP) splints after manipulation under anaesthesia.
  • Splitting the cast initially is a precautionary measure for potential limb compromise, often not required, leading to delayed completion and added inconvenience.
  • Current practice involves potential delays and extra steps for cast completion, impacting efficiency and patient comfort.

Purpose of the Study:

  • To evaluate the mechanical sufficiency of split POP splints for stabilizing paediatric forearm fractures.
  • To determine if split POP splints adequately protect patients from further injury without immediate spreading.
  • To assess the potential for streamlining paediatric fracture treatment by omitting initial cast splitting.

Main Methods:

  • Fabrication of 42 standardised 8-layer POP cylinders, with 21 split longitudinally.
  • Non-destructive mechanical testing of splints in bending, kinking, and torsion modes to determine load at clinical endpoints.
  • Destructive testing to failure to assess ultimate stability and failure modes of both split and circumferential splints.

Main Results:

  • Split POP splints demonstrated mean loads of 1375N (Bending), 544N (Kinking), and 12 Nm (Torsion) at clinical endpoints.
  • These loads represent 67.3%, 70.4%, and 47.4% of circumferential splint values, respectively, exceeding body weight for most paediatric patients.
  • Post-failure instability rates were comparable between split (50%) and full (44%) casts.

Conclusions:

  • Unspread split POP splints provide sufficient mechanical stability for paediatric forearm fractures.
  • These splints adequately protect against further injury, negating the routine need for immediate spreading or later completion.
  • The findings suggest a simplified, more efficient treatment protocol for paediatric forearm fractures is feasible.