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Wound Healing Therapy – Methods and Treatment

Wound healing therapy encompasses all medical measures to support the healing of acute and chronic wounds. The goal is to restore skin integrity and prevent infection.

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Things worth knowing about "Wound Healing Therapy"

Wound healing therapy encompasses all medical measures to support the healing of acute and chronic wounds. The goal is to restore skin integrity and prevent infection.

What is Wound Healing Therapy?

Wound healing therapy refers to all medical, nursing, and therapeutic interventions aimed at supporting, accelerating, or restoring the natural healing process of a wound. It is applied to both acute wounds (e.g., lacerations, surgical wounds) and chronic wounds (e.g., venous leg ulcers, diabetic foot ulcers, pressure injuries). Appropriate wound healing therapy is essential to minimize complications such as infections, delayed healing, and excessive scarring.

Phases of Wound Healing

The wound healing process occurs in four overlapping phases:

Hemostasis: Immediate response to stop bleeding through vasoconstriction and platelet aggregation.
Inflammatory phase: Immune cells migrate to the wound to eliminate pathogens and cleanse the wound bed (0–4 days).
Proliferative phase (tissue formation): Formation of granulation tissue and new blood vessels (4–21 days).
Remodeling phase (scar maturation): Restructuring of scar tissue and strengthening of the wound (up to 2 years).

Causes of Impaired Wound Healing

Several factors can negatively affect the healing process:

Chronic conditions such as diabetes mellitus or peripheral arterial disease (PAD)
Malnutrition and deficiencies in vitamins or minerals (e.g., vitamin C, zinc)
Bacterial or fungal infections
Medications such as corticosteroids or immunosuppressants
Advanced age and reduced blood circulation
Smoking and excessive alcohol consumption

Methods of Wound Healing Therapy

Conservative Wound Care

Conservative therapy focuses on wound cleansing, appropriate dressing changes, and maintaining a moist wound environment. Modern wound dressings such as hydrocolloids, hydrogels, alginates, and foam dressings regulate moisture, protect against infection, and support granulation tissue formation.

Debridement

Debridement involves the removal of necrotic tissue and wound debris to expose healthy tissue. It can be performed surgically, mechanically, enzymatically (e.g., with collagenase), or biologically (e.g., larval therapy using maggots).

Negative Pressure Wound Therapy (NPWT)

Negative pressure wound therapy (also known as vacuum-assisted closure, VAC) involves applying a specialized foam dressing to the wound and using controlled suction. This promotes blood flow, reduces edema, and accelerates granulation tissue formation. It is commonly used for deep or poorly healing wounds.

Hyperbaric Oxygen Therapy (HBOT)

In hyperbaric oxygen therapy, the patient breathes pure oxygen under elevated atmospheric pressure. The increased tissue oxygen level promotes cell division, combats anaerobic pathogens, and improves healing of ischemic wounds.

Growth Factors and Biological Therapies

Modern approaches use growth factors (e.g., PDGF, EGF), platelet-rich plasma (PRP), or stem cell applications to stimulate the healing process at the cellular level. These methods are particularly subject to ongoing research in the context of chronic wound management.

Antiseptic and Antibiotic Treatment

For infected wounds, antiseptics such as polyhexanide, octenidine, or povidone-iodine are used for local disinfection. In cases of systemic infection, antibiotic therapy may be required.

Diagnosis and Wound Assessment

A thorough wound assessment forms the basis of every therapeutic strategy. It includes evaluation of wound size, depth, wound edges, exudate volume, signs of infection, and the overall health status of the patient. Standardized documentation frameworks such as the TIME principle (Tissue, Infection/Inflammation, Moisture, Edge) provide structured guidance for wound assessment.

Nutrition and Supplementation in Wound Healing

A balanced diet is essential for optimal wound healing. Particularly important nutrients include:

Protein: Required for collagen synthesis and new tissue formation
Vitamin C: Cofactor for collagen production and antioxidant defense
Zinc: Involved in cell proliferation and immune function
Vitamin A: Supports epithelialization and regulation of inflammation
Omega-3 fatty acids: Modulation of the inflammatory response

References

Dissemond, J. et al. (2022): Moderne Wundversorgung – Praxiswissen nach dem WBK-Curriculum. Springer Medizin Verlag.
World Health Organization (WHO): Wound and Lymphoedema Management. WHO Press, Geneva.
Mustoe, T.A. et al. (2006): International clinical recommendations on scar management. Plastic and Reconstructive Surgery, 110(2): 560–571. PubMed PMID: 12142678.

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