Mandibular Fracture Fixation and Complications

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Questions and Answers

What type of force does a horizontally favorable fracture line resist?

Rotational forces

Upward displacing forces (correct)

Downward displacing forces

Lateral displacing forces

Which muscles' pull is resisted by a horizontally favorable fracture line?

Latissimus dorsi and rectus abdominis

Sternocleidomastoid and trapezius

Deltoid and biceps

Masseter and temporalis (correct)

In what plane is the horizontal fracture line viewed?

Sagittal plane

Oblique plane

Horizontal plane (correct)

Coronal plane

What is a characteristic of a horizontally favorable fracture line?

Reduces tension from muscles Signup and view all the answers

How does a horizontally favorable fracture line affect fracture stability?

It increases fracture stability Signup and view all the answers

What should be done if a fracture becomes infected?

Immediate extraction should be performed Signup and view all the answers

What is a potential intraoperative complication of mandibular fractures?

Misplaced fixation Signup and view all the answers

What risk is reduced when using monocortical screws in mandibular fixations?

Risk of damage to the inferior alveolar canal Signup and view all the answers

Which complication is associated with misplaced fixation devices in mandibular procedures?

Damage to root apices Signup and view all the answers

Why is it important to avoid misplaced fixation in mandibular fractures?

To maintain the integrity of the mandible's structure Signup and view all the answers

What are the three surgical approaches to the mandibular body mentioned?

Intraoral, Extraoral, and Combined access Signup and view all the answers

Which approach to the mandibular body might involve the least amount of incision exposure?

Intraoral approach Signup and view all the answers

What factor can influence the choice of surgical approach for a mandibular fracture?

Method of internal fixation and fracture site Signup and view all the answers

Which surgical approach combines features of both intraoral and extraoral techniques?

Combined access approach Signup and view all the answers

When considering fractures of the mandibular body, which statement is true?

The choice of approach is influenced by the planned fixation method. Signup and view all the answers

What type of infections are typically experienced by immunocompromised patients?

Mild with intraoral swelling and discomfort Signup and view all the answers

What is one potential complication of the TMJ mentioned in the content?

Fibrous or bony ankylosis Signup and view all the answers

Which group is NOT typically classified as immunocompromised?

Patients suffering from hypertension Signup and view all the answers

What common symptoms might immunocompromised patients experience during infections?

Intraoral swelling and discomfort Signup and view all the answers

How does ankylosis affect jaw function according to the content?

It reduces normal functional movement Signup and view all the answers

Which of the following factors contribute to a patient being considered immunocompromised?

Conditions like diabetes and alcoholism Signup and view all the answers

What outcome is inhibited by the reduced functional movement of the jaw?

Jaw growth Signup and view all the answers

What is the general severity of infections in immunocompromised patients?

Generally mild but can escalate quickly Signup and view all the answers

What type of ankylosis can occur in the TMJ?

Fibrous or bony ankylosis Signup and view all the answers

Which of the following best describes ankylosis in relation to TMJ?

A complication that can lead to functional movement reduction Signup and view all the answers

Study Notes

Mandibular Fracture Fixation

Horizontally favorable fracture lines resist upward displacement from muscles like the masseter and temporalis.
Three surgical approaches for mandibular body fractures: intraoral, extraoral, or combined access.
Monocortical screws reduce damage to structures like the inferior alveolar canal and root apices compared to transosseous wires or plates.
Infection after fracture requires immediate extraction.

Complications of Mandibular Fractures

Early complications: misplaced fixation, damage to structures within the mandible.
Increased risk of infection in patients with diabetes and alcoholism.
Most infections are mild, presenting with intraoral swelling and discomfort.
TMJ ankylosis is a potential complication, restricting jaw movement and potentially inhibiting growth.

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Description

This quiz explores the surgical fixation methods for mandibular fractures and the potential complications associated with them. Topics include favorable fracture lines, surgical approaches, and infection risks, especially in vulnerable populations. Enhance your understanding of TMJ ankylosis and early post-operative complications.