Basic Techniques

• Simple interrupted: Most common, good tissue approximation
• Continuous: Faster, good for long incisions
• Mattress: Horizontal or vertical, better tissue eversion
• Subcuticular: Excellent cosmetic results, continuous intradermal

Knot Tying

• Square knots: Standard, secure
• Surgeon's knot: Extra wrap for security
• Knot placement: Away from incision line when possible

Factors Affecting Suture Selection

Tissue Factors

• Vascularity: Well-vascularized areas heal faster
• Tension: High-tension areas need stronger sutures
• Infection risk: Consider antibacterial sutures in high-risk areas

Patient Factors

• Age: Children heal faster, may need absorbable sutures
• Systemic disease: Diabetes, immunocompromise affect healing
• Compliance: Non-compliant patients may benefit from absorbable sutures

Procedural Factors

• Surgical site: Aesthetic vs functional priorities
• Expected healing time: Match absorption to healing timeline
• Post-operative care: Consider patient's ability to maintain oral hygiene

Transoral Lithotomy: Procedure for Submandibular Duct Stone Removal

Transoral lithotomy is a surgical technique used to remove stones (calculi) from the submandibular duct (Wharton's duct). This procedure is typically performed under local anesthesia and is effective for addressing sialolithiasis (the presence of stones in the salivary glands).

Procedure

1. Preoperative Preparation:

   • Radiographic Assessment: The exact location of the stone is determined using imaging studies, such as X-rays or ultrasound, to guide the surgical approach.
   • Local Anesthesia: The procedure is performed under local anesthesia to minimize discomfort for the patient.

2. Surgical Technique:

   • Suture Placement: A suture is placed behind the stone to prevent it from moving backward during the procedure, facilitating easier access.
   • Incision: An incision is made in the mucosa of the floor of the mouth, parallel to the duct. Care is taken to avoid injury to surrounding structures, including:
     • Lingual Nerve: Responsible for sensory innervation to the tongue.
     • Submandibular Gland: The gland itself should be preserved to maintain salivary function.

3. Blunt Dissection:

   • After making the incision, blunt dissection is performed to carefully displace the surrounding tissue and expose the duct.

4. Identifying the Duct:

   • The submandibular duct is located, and the segment of the duct that contains the stone is identified.

5. Stone Removal:

   • A longitudinal incision is made over the stone within the duct. The stone is then extracted using small forceps. Care is taken to ensure complete removal to prevent recurrence.

6. Postoperative Considerations:

   • After the stone is removed, the incision may be closed with sutures, and the area is monitored for any signs of complications.

Complications

• Bacterial Sialadenitis: If there is a secondary infection following the procedure, it can lead to bacterial sialadenitis, which is an inflammation of the salivary gland due to infection. Symptoms may include pain, swelling, and purulent discharge from the duct.

Most Frequent Intra – orbital Fracture

Location: Orbital floor medial to infraorbital canal Pattern:

• Confined to medial portion of floor
• Lower portion of medial orbital wall Consequence:
• Orbital soft tissue displacement into maxillary/ethmoidal sinuses
• Increased orbital volume

Diplopia Types

Binocular Diplopia

• More common in trauma
• Causes: Proptosis, enophthalmos (globe position alteration)

Monocular Diplopia

• Retinal detachment
• Dislocated lens
• Foreign body
• Uncorrected refractive error
• Cataract
• Corneal opacity

Superior Orbital Fissure Syndrome

• Mechanism: Compression of superior orbital fissure contents

Orbital Apex Syndrome

• Cause: Usually retrobulbar hematoma
• Mechanism: Compression of optic canal + superior orbital fissure contents

NOE FRACTURES

Bowstring Test

• Purpose: Assess medial canthal ligament status
• Technique: Lateral traction on lateral canthus while palpating medial canthal region
• Positive test: Confirms telecanthus

Subciliary Incision

• Major complication: Greatest propensity for ectropion or scleral show

Sliding Osseous Genioplasty

Sliding osseous genioplasty is a surgical technique designed to enhance the projection of the chin, thereby improving facial aesthetics. This procedure is particularly advantageous for patients with retrogathia, where the chin is positioned further back than normal, and who typically present with Class I occlusion (normal bite relationship) without significant dentofacial deformities.

Indications for Sliding Osseous Genioplasty

1. Aesthetic Chin Surgery:

   • Most patients seeking this procedure do not have severe dentofacial deformities. They desire increased chin projection to achieve better facial balance and aesthetics.

2. Retrogathia:

   • Patients with a receding chin can significantly benefit from sliding osseous genioplasty, as it allows for the forward repositioning of the chin.

Procedure Overview

Sliding Osseous Genioplasty involves several key steps:

1. Surgical Technique:

   • Incision: The procedure can be performed through an intraoral incision (inside the mouth) or an extraoral incision (under the chin) to access the chin bone (mandibular symphysis).
   • Bone Mobilization: A horizontal osteotomy (cut) is made in the chin bone to create a movable segment. This allows the surgeon to slide the bone segment forward to increase chin projection.
   • Fixation: Once the desired position is achieved, the bone segment is secured in place using plates and screws or other fixation methods to maintain stability during the healing process.

2. Versatility:

   • Shorter and Longer Advancements: The technique can be tailored to achieve both shorter and longer advancements of the chin, depending on the patient's aesthetic goals.
   • Vertical Height Alterations: Sliding osseous genioplasty is particularly effective for making vertical height adjustments to the chin, allowing for a customized approach to facial contouring.

Recovery

• Postoperative Care:

  • Patients may experience swelling, bruising, and discomfort following the procedure. Pain relief medications are typically prescribed to manage discomfort.
  • A soft diet is often recommended during the initial recovery phase to minimize strain on the surgical site.

• Follow-Up Appointments:

  • Regular follow-up visits are necessary to monitor healing, assess the alignment of the chin, and ensure that there are no complications.
  • The surgeon will evaluate the aesthetic outcome and make any necessary adjustments to the postoperative care plan.

Based on Absorption

Absorbable Sutures

• Natural: Catgut (plain and chromic)
• Synthetic: Vicryl, PDS-II, Monocryl, Biosyn

Non-Absorbable Sutures

• Natural: Silk, linen
• Synthetic: Nylon, polypropylene, polyester

Based on Structure

Monofilament

• Examples: PDS-II, Monocryl, nylon, polypropylene
• Advantages: Smooth passage, less tissue drag, reduced bacterial adherence
• Disadvantages: Difficult handling, knot security issues

Multifilament/Braided

• Examples: Vicryl, silk, polyester
• Advantages: Better handling, superior knot security
• Disadvantages: Increased tissue drag, potential for bacterial harboring

Microvascular Trigeminal Decompression (The Jannetta Procedure)

Microvascular decompression (MVD), commonly known as the Jannetta procedure, is a surgical intervention designed to relieve the symptoms of classic trigeminal neuralgia by addressing the underlying vascular compression of the trigeminal nerve. This procedure is particularly effective for patients who have not responded to medical management or who experience significant side effects from medications.

Overview of the Procedure

1. Indication:

   • MVD is indicated for patients with classic trigeminal neuralgia, characterized by recurrent episodes of severe facial pain, often triggered by light touch or specific activities.

2. Anesthesia:

   • The procedure is performed under general anesthesia to ensure the patient is completely unconscious and pain-free during the surgery.

3. Surgical Approach:

   • The surgery is conducted using an intraoperative microscope for enhanced visualization of the delicate structures involved.
   • The arachnoid membrane surrounding the trigeminal nerve is carefully opened to access the nerve.

4. Exploration:

   • The trigeminal nerve is explored from its entry point at the brainstem to the entrance of Meckel’s cave, where the trigeminal ganglion (Gasserian ganglion) is located.

5. Microdissection:

   • Under microscopic and endoscopic visualization, the surgeon performs microdissection to identify and mobilize any arteries or veins that are compressing the trigeminal nerve.
   • The most common offending vessel is a branch of the superior cerebellar artery, but venous compression or a combination of arterial and venous compression may also be present.

6. Decompression:

   • Once the offending vessels are identified, they are decompressed. This may involve:
     • Cauterization and division of veins that are compressing the nerve.
     • Placement of Teflon sponges between the dissected blood vessels and the trigeminal nerve to prevent further vascular compression.

Outcomes and Efficacy

• Immediate Pain Relief:

  • Most patients experience immediate relief from facial pain following the decompression of the offending vessels.
  • Reports indicate rates of immediate pain relief as high as 90% to 98% after the procedure.

• Long-Term Relief:

  • Many patients enjoy long-term relief from trigeminal neuralgia symptoms, although some may experience recurrence of pain over time.

• Complications:

  • As with any surgical procedure, there are potential risks and complications, including infection, cerebrospinal fluid leaks, and neurological deficits. However, MVD is generally considered safe and effective.