Supraperiosteal plane: what it means in injection
Quick facts
- Definition
- Layer just above the periosteum, the membrane that covers the bone.
- Usual association
- Structural support in bony areas, such as the cheekbone, chin and jaw.
- Comparison
- It is the deepest plane in the facial injection classification.
- Point of attention
- Vessels and nerves pass beside the bone; requires clear anatomy and consent.
The supraperiosteal plane is the layer that lies just above the periosteum, the membrane that covers the surface of the bone. In facial injection, the term describes the deepest level at which a product is deposited, in close contact with the bony base. It is classification vocabulary, and the decision of where and how to use it belongs to the qualified professional.
How does this plane compare with the others?
| Plane | Relative depth | Usual association |
|---|---|---|
| Intradermal | Shallowest | Skin quality |
| Subcutaneous | Superficial to intermediate | Soft, diffuse filling |
| Submuscular | Deep | Support and transition |
| Supraperiosteal | Deepest | Structural support over the bone |
The term is descriptive and the association is general. In each area, the real layer between skin and bone has a different thickness and composition.
Where does this concept appear?
The supraperiosteal plane appears in areas where bony support is the protagonist: cheekbone, chin, jaw, the piriform area and, very carefully, the temple and the periorbital area. In each one, the local anatomy has its own landmarks, such as the prezygomatic space, the canine fossa, the piriform aperture and the orbital rim.
This plane is often described as relatively safe with respect to superficial vessels, but that does not eliminate risk. Vessels and nerves pass close to the bone and pierce the periosteum to reach the skin, like the branches that exit through the foramina. Knowledge of these exits is part of the professional's training.
What are the risks?
- Vascular occlusion: vessels of significant caliber run close to the bone in some areas. See vascular occlusion.
- Nerve injury: sensory branches that exit from bony foramina can be touched.
- Pain and discomfort: the periosteum is richly innervated, and the patient usually reports more sensitivity in maneuvers near the bone.
- Asymmetry: a deep product that migrates or settles poorly can be hard to adjust.
What to explain to the patient?
The patient does not need to know the name of the plane, but needs to understand three ideas: that the procedure works in different layers, that deep layers give support and superficial ones refine the surface, and that each layer has its own risks. Informed consent should record this in accessible language.
Also known as: juxtaosseous plane, plane over the periosteum.
Frequently asked questions
What is the periosteum?
It is the thin membrane of connective tissue that covers the surface of bones. The supraperiosteal plane is the space just above it, between it and the more superficial layers.