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Related Concept Videos

Radial System Protection01:23

Radial System Protection

425
Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system.
In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
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Assessment of radial pulse01:11

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Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
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Assessment of apical radial pulse01:25

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Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
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Muscles that Move the Head01:19

Muscles that Move the Head

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The muscles that move the head are a dynamic and complex group of structures that work together to facilitate a wide range of head movements, including rotation, flexion, extension, and lateral bending.
The bilateral sternocleidomastoid, or SCM, and the suprahyoid and infrahyoid muscles are significant head flexors. The SCM muscles originate at the sternum and clavicle and attach to the mastoid process of the temporal bone. The SCM contracts bilaterally to bend the head forward, whereas...
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Continuous Renal Replacement Therapy01:30

Continuous Renal Replacement Therapy

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Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
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Arteries of the Head and Neck01:26

Arteries of the Head and Neck

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The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
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Related Experiment Video

Updated: Jan 22, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
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Radial Head Replacement Through a Kocher Approach.

Kyle A Petersen1, Craig Siesel, Eric T Miller

  • 1Orthopedic Department, Summa Health System, Akron, OH.

Journal of Orthopaedic Trauma
|July 11, 2019
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Summary
This summary is machine-generated.

Radial head replacement is a viable alternative for complex elbow fractures. This procedure offers good stability and range of motion, comparable to the uninjured elbow.

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Area of Science:

  • Orthopedic surgery
  • Traumatology
  • Biomechanics

Background:

  • Radial head fractures are common elbow injuries.
  • Complex fractures (3+ fragments) often have poor outcomes with open reduction and internal fixation (ORIF).
  • Radial head replacement (arthroplasty) is an alternative for these challenging cases.

Observation:

  • This case study details a radial head arthroplasty for a 3-part fracture in a young male.
  • The implant restored a smooth articular surface and elbow stability.
  • The procedure addresses difficulties in achieving anatomical reduction with ORIF for comminuted fractures.

Findings:

  • Radial head arthroplasty provides a functional alternative to ORIF for 3-part radial head fractures.
  • The treatment resulted in good clinical outcomes, including elbow stability.
  • Elbow range of motion was comparable to the contralateral (uninjured) side.

Implications:

  • Radial head replacement is a recommended treatment for specific complex radial head fractures.
  • This technique can improve patient outcomes and elbow function.
  • Further research into long-term outcomes of radial head arthroplasty is warranted.