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Pectoralis major myocutaneous flap /certified fixed orthodontic courses by Indian dental academy
1. PECTORALIS MAJOR MYOCUTANEOUS FLAP
INDIAN DENTAL ACADEMY
Leader in continuing dental education
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2. INTRODUCTION
• Development of myocutaneous flap- mid 70’s.
• Floor of the mouth, lateral tongue- sternocleidomastoid,
temporalis, nasolabial flaps.
• Larger defects- free flaps, regional flaps.
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9. • ORIGN:- 1) Clavicular head
2)Sternocostal head
• INSERTION:- Lateral lip of intertubercular groove of
humerus
• ACTION:-Adducts and medially rotates humerus; draws
scapula anteriorly and inferiorly
Acting alone: clavicular head flexes humerus and
sternocostal head extends it.
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12. INDICATIONS FOR PECTORALIS MAJOR
• OROPHARYNX
• MANDIBULAR RECONSTRUCTION
• ORBITAL EXENTERATION
• TEMPORAL BONE RESECTION
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42. ADVANTAGES
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Single stage repair
Single dominant blood supply
Provides inner and outer lining
Protects carotid artery
Sufficient skin and soft tissue bulk
Good arc of rotation
Donor site closed primarily
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43. DISADVANTAGES
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Might be too bulky for oral cavity
Arc of rotation limited for upper facial defects
Shoulder function impaired
Distal skin blood supply not reliable
Distortion of symmetry in donor site
SUPRACLAVICULAR BULGE
DISTORTED BREAST
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