External Fixation Device
External Fixation Device - Related Videos
10:09
Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models
0 Views •
Cited by 19 •
2014
One constraint of preclinical research in the field of bone repair is the lack of experimental control over the local mechanical environment within a healing bone lesion. We report the design and use of an external fixator for bone repair with the ability to change fixator stiffness in vivo.
05:22
Iris Fixation via External Pentagram Suturing
0 Views •
2022
The present protocol describes how a 10-0 polypropylene suture crosses the anterior surface of the iris, forming a pentagram to prevent both iris and pupil from moving toward the cornea. This can be combined with subsequent keratoplasty to cure bullous keratopathy with extensive anterior synechia of the iris.
01:20
Externalities
0 Views •
2025
Externalities are unintended side effects of economic activities that impact third parties who are not directly involved in the market transaction. They can have positive or negative effects that can influence society and the environment in various ways. Positive Externalities Positive externalities occur when a market activity produces benefits for others without those beneficiaries having to pay for it. Examples include: Education: When individuals receive an education, society benefits...
08:20
A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
0 Views •
Cited by 3 •
2019
In vivo mammalian models of critical-sized bone defects are essential for researchers studying healing mechanisms and orthopedic therapies. Here, we introduce a protocol for the creation of reproducible, segmental, femoral defects in rats stabilized using external fixation.
06:57
Instillation and Fixation Methods Useful in Mouse Lung Cancer Research
0 Views •
Cited by 48 •
2015
The goal of this paper is to describe simple methods that will greatly aid in the setup and analysis of mouse lungs with lung cancer or other pathologies. We present 3 protocols to simply and reliably carry out lung instillations, fixation, and lung volume measurements.
FAQs
Stability comes from connecting pins or wires anchored in bone to an external framework of rods, rings, or clamps. This arrangement maintains the relationship between bone segments without placing the main support inside the injured area. Because the frame can be adjusted, surgeons can modify alignment as healing progresses or as reconstruction requires.
Preserving access allows surgeons to manage damaged soft tissue while the bone remains supported. This is particularly important when swelling or an open fracture makes extensive internal surgery unsuitable. The external frame stabilizes the skeletal injury without covering the injury site, supporting staged treatment and reducing additional disruption around already damaged tissue.
The major distinction is where stabilization is provided and how much the injury site is disturbed. Internal implants may be unsuitable when severe swelling, open injury, or soft-tissue damage is present. External fixation places the supporting frame outside the body, allowing alignment to be maintained while preserving access for treatment of the surrounding tissues.
Choice is strongly influenced by the condition of both bone and soft tissue. Open fractures, severe swelling, bone loss, and deformity can favor an external approach when internal implants are unsuitable. The technique is also useful when treatment must proceed in stages, because the frame can maintain support while the broader injury is addressed.
Application involves inserting pins or wires through the skin into the bone, then attaching them to rods, rings, or clamps outside the body. The connected components form a rigid construct that holds the bone in alignment. Surgeons can adjust the frame when necessary, making the setup useful during healing, correction, or staged reconstruction.
Surgeons may use it when immediate internal implantation is limited by open injury, swelling, soft-tissue damage, or bone loss. The frame provides interim or continuing stability while preserving access to the injured region. This makes it suitable for staged orthopedic care, in which skeletal support and treatment of surrounding tissue can be coordinated over time.
Its uses extend to fracture healing, deformity correction, and limb reconstruction. Maintaining alignment supports the healing bone, while the adjustable external construct can accommodate correction as treatment develops. In complex injuries, the method combines skeletal support with continued access to damaged tissue, making it relevant to reconstructive orthopedic management as well as fracture care.