Introduction
wondrand is the Dutch medical term for the edge of a wound, the rim of living tissue where healthy skin meets the open wound. The word names the boundary that closes a wound: new skin grows inward from the wondrand. In the Netherlands the term is a formal part of the health record, appearing as WondRand in the Dutch wound information model, with its own definition code and a fixed list of edge conditions. This article explains what wondrand means, how it is coded in Dutch health records, what the five recorded edge conditions are, how wondrand fits into the TIME model, and what healthy and damaged edges show. The information here is general information only, not personal medical advice; a wound that shows signs of infection or fails to heal needs a clinician’s review.
wondrand in Plain Words: Where Healthy Skin Meets the Wound
wondrand is made of two Dutch words: wond, meaning wound, and rand, meaning edge, margin or border. Put together, the word means wound edge. The Dutch health record spells the concept WondRand, with the two parts joined in the capitalised style used for data fields, while the English equivalent is WoundEdge. The wondrand is not the wound itself and it is not the skin around the wound; it is the line where the two meet. On one side lies intact skin, and on the other side lies the wound bed, the open surface where tissue has been lost. The condition of that rim carries more information than any other single feature of a wound.
A wound closes from its edges inward. New skin cells, called epithelial cells, form at the wondrand and move across the wound surface, while the tissue beneath pulls the edges toward each other in a process called contraction. When the wondrand is healthy, a thin pink rim advances a little further with each assessment, and the open area shrinks. When the wondrand is damaged, the inward movement stops, and the wound stays open even though the wound bed itself may look clean. That is why wound assessment gives the edge its own letter in the TIME model, and why Dutch records give wondrand its own coded field rather than folding it into a general description of the wound.
wondrand in the Dutch Wound Record: NL-CM:19.2.11 and SNOMED CT 449747006
wondrand is a formal concept in the Dutch health and care information model known as a zib, short for Zorginformatiebouwsteen. The wound building block is called nl.zorg.Wound, and wondrand appears inside it as the data element WondRand. Its definition in the model is short and exact: description of the condition of the outer edges of the wound. The element carries the definition code NL-CM:19.2.11, and it is mapped to the international clinical vocabulary SNOMED CT, where the matching concept is 449747006, listed as “Wound edge finding”.
The wound building block defines a wound as an interruption of the continuity of the skin, often caused by external influences. Its stated purpose is plain: information on the wound is recorded so that it can be shared with other health professionals. That purpose explains why wondrand is coded rather than written as free text. A coded value can be read by any system that uses the same model, so a wound edge recorded in one clinic reads the same in a hospital or a home-care record. The code list for wondrand carries the identifier OID 2.16.840.1.113883.2.4.3.11.60.40.2.19.2.5, and its values are drawn from SNOMED CT.
The wound building block has gone through several published versions: version 1.0 dates from 2015, version 3.1 was published on 31 December 2017, version 3.2 followed in 2019, and version 3.6 was released on 15 April 2024. The model cites the Dutch wound care guideline Richtlijn Wondzorg, published by the Nederlandse Vereniging voor Heelkunde in 2013, as one of its sources. For the tissue inside the wound, the model uses the structure of the WCS model, the classification of the Woundcare Consultant Society, known in Dutch as WCS Kenniscentrum Wondzorg. The model also states its limits: the WCS classification covers surgical wounds, trauma wounds, foot wounds linked to long-term high blood sugar, and venous ulcers, but not oncological ulcers, and the wound building block itself does not describe pressure wounds or burn wounds, which have their own separate building blocks.
The Five Edge Conditions in the wondrand Codelist
The wondrand codelist holds five values, each naming a condition a clinician can see at the rim of a wound. The table below sets out all five with their Dutch name, English equivalent and SNOMED CT code.
| Dutch value | English value | SNOMED CT code | What it means |
|---|---|---|---|
| Epithelisatie | Wound epithelialisation | 449743005 | New skin forming at the edge, moving inward |
| Irritatie | Skin irritation | 367466007 | Edge skin irritated, often red or sore |
| Ondermijning | Wound tissue undermining | 449752001 | Tissue lost beneath the edge, leaving a pocket |
| Verweking | Macerated skin | 3644009 | Edge softened and pale from too much moisture |
| Anders | Other | OTH | An edge condition the four values do not cover |
Epithelisatie, or epithelialisation, is the value every clinician wants to record. It means that new skin is forming at the wondrand, appearing as pink or white tissue in the final stages of healing, where epithelial cells resurface the wound. This new tissue is fragile, and wound-care guidance is clear that these areas should not be debrided, which means the new skin should not be cut or scraped away.
Irritatie, or skin irritation, describes an edge where the skin is red, sore or inflamed, often from fluid leaking from the wound, from a dressing that does not fit, or from repeated dressing changes that strip the skin. Sore skin breaks more easily, and broken skin at the edge widens the wound instead of closing it. Ondermijning, or undermining, is the most hidden of the five conditions: tissue has been lost beneath the wondrand, so a pocket extends under skin that still looks intact from above, and the true size of the wound is larger than the opening suggests. Undermining is found by gentle probing rather than by looking, and assessments record its depth and extent at reviews. A wound with undermining needs a dressing that reaches into the pocket, because a dressing that only covers the surface leaves the hidden space untreated.
Verweking, or maceration, means that the skin at the wondrand has softened and turned pale from too much moisture. Excess fluid from the wound, known as exudate, soaks the edge, and the soaked skin loses its strength and breaks down. Maceration is a sign that the dressing is failing to manage the fluid. Anders, or other, is the fifth value, and it exists so that the record stays honest: if the edge shows a condition that none of the four named values covers, the clinician records “other” rather than forcing the finding into the wrong box.
wondrand and the TIME Model: The E That Closes a Wound
wondrand is the E in TIME, the wound assessment framework that clinicians have used since 2003, when Schultz and colleagues published it in the journal Wound Repair and Regeneration. TIME stands for Tissue, Infection or inflammation, Moisture, and Edge, and it gives a systematic order for looking at a wound: first the tissue in the wound bed, then signs of infection or inflammation, then the moisture level, and then the edge. The E is last in the list, and it answers the question the other three letters lead to: is this wound closing? Tissue can look healthy, infection can be absent, and moisture can be balanced, yet a wound will not close if its edge has stalled.
The framework has grown since 2003. TIMES adds an S for Surrounding skin, and TIMERS, introduced in 2012 and widened in the Wounds International consensus led by Atkin in 2019, adds R for Repair or regeneration and a second S for Social factors. The Triangle of Wound Assessment, published by Dowsett and colleagues in Wounds International in 2015, builds on TIME and places the wondrand in a triangle with the wound bed and the skin around the wound, listing the edge findings to check: maceration, dehydration, undermining, and thickened or rolled edges.
For readers who want a plain summary of how the TIME framework works in practice, the wound healing guides on this site set out the same ideas in everyday terms.
Healthy Edges, Rolled Edges and Undermining: Reading wondrand
A healthy wondrand is pale pink, thin, flat and level with the wound bed, so that new skin cells can move across the surface without climbing a step. The pink colour comes from new tissue forming at the rim, and the flat shape shows that the edge is still in contact with the bed it needs to close over. When a wound edge looks like this, the wound is healing, and the edge will move inward a little at each review.
A rolled edge, also called epibole, looks very different. In deeper or larger wounds the edge can roll under and thicken, so that the rim curls inward and the skin turns down into the wound instead of lying flat. A rolled edge is difficult to heal, because the rolled rim blocks the path of new skin cells and slows both granulation, the growth of new red tissue in the bed, and epithelialisation, the resurfacing of the wound. A wound with a rolled edge will stay open until the rolled rim is dealt with by a clinician. A dusky edge, darker than the healthy pink, points to poor blood supply reaching the rim, while a dry edge points to a dry wound bed, where healing slows because new cells cannot move across a dry surface.
A stalled edge, one that has not moved for weeks, needs its cause found. Wound-care guidance notes that stalled edges can point to pressure on the wound, poor blood supply, a film of bacteria known as biofilm, or, rarely, malignancy. A wound that has not healed after twelve weeks warrants specialist review, and a sample of tissue, known as a biopsy, may be taken to rule out malignancy. The shape of the edge can even point to the cause of the wound: venous leg ulcers are shallow and generally irregular in shape, while arterial ulcers are well defined with a clear border. Two findings at the wondrand matter more than any other: contraction and epithelialisation of the edges is the clearest sign of healing, a point made by Leaper and colleagues in 2012, and a rolled, thick edge or undermining is at once a sign of slow healing and a cause of it.
wondrand and the Four Phases of Healing
Healing moves through four overlapping phases, described in the StatPearls review as hemostasis, inflammation, proliferation, and remodeling. Hemostasis comes first, in which bleeding stops and a clot forms, then inflammation, in which the wound is cleaned by the body’s own defences, then proliferation, in which new tissue grows, and remodeling, the long final phase in which the new tissue is strengthened and reshaped.
The wondrand is most visible in the proliferation phase, when granulation tissue fills the wound bed and new skin forms at the rim. Granulation tissue is pink or red new connective tissue. From the edge, epithelial cells move across this filling, and the rim advances, while the tissue beneath the wound contracts, pulling the edges toward each other. In a wound that heals by primary intention, the edges are brought together and held close, for example with stitches, so that the wound closes with only a narrow line of new tissue. In a wound that heals by secondary intention, the wound is left open and closes from the base and the edges over time, which takes longer and leaves a wider scar. In remodeling, the wondrand disappears as a visible feature, because the wound has closed.
The four phases also explain why the edge needs a moist environment: new cells move across a moist surface, and a dry wound bed delays healing. Too much moisture is just as harmful, because it softens the edge into maceration. The balance of too dry and too wet is the M in TIME, moisture balance, and the wondrand is where that balance shows: a pale, soft edge means too wet, a dry, hard edge means too dry, and a thin pink edge means the balance is right.
Why wondrand Is Recorded in Wound Assessments
wondrand is recorded because a wound changes over time, and only a written record shows whether it is changing in the right direction. Wound assessments are repeated at reviews, and each review documents the wound dimensions, including depth and any undermining, so that the current state can be set against the last one. If the edge advances, the treatment is working. If the edge stalls, the treatment needs to change. Without the record, that comparison is guesswork.
The record also guides the choice of dressing. A wound with a macerated edge needs a dressing that absorbs fluid and protects the skin, while a wound with a dry edge needs moisture added, and a wound with undermining needs a dressing that fills the pocket beneath the edge. The dressing that suits one edge state can harm another, so the edge finding drives the dressing choice at each review. That is the stated purpose of the Dutch wound building block: information on the wound is recorded so that it can be shared with other health professionals. Standardised codes make that sharing work, because when wondrand is recorded as a SNOMED CT code, the finding means the same thing in every system that uses the code. A free-text note cannot be compared with anything, while a code of 449743005 for epithelialisation or 449752001 for undermining carries an exact meaning.
For a plain-language overview of how wounds are assessed and dressed, the wound care guides on this site cover the same ground without clinical terms.
wondrand Frequently Asked Questions
What does wondrand mean?
wondrand is the Dutch medical term for the edge of a wound, the rim of living tissue where healthy skin meets the open wound. The word joins the Dutch wond, meaning wound, with rand, meaning edge, margin or border, and in Dutch health records it appears as WondRand, with the English equivalent WoundEdge. The term names the boundary that closes a wound, because new skin grows inward from the edge.
Is wondrand an English word?
No, wondrand is not an English word in modern use. It is a Dutch medical term, used in the Netherlands in wound care and in the Dutch health record. The same spelling does appear in Older Scots, where wondrand is a form of the verb meaning to wonder, but that is a different word with no link to wounds or medicine. In a medical context, wondrand always means the wound edge.
What is the code for wondrand in health records?
In the Dutch health and care information model, wondrand is the data element WondRand in the wound building block nl.zorg.Wound, with the definition code NL-CM:19.2.11. It is mapped to SNOMED CT concept 449747006, listed as “Wound edge finding”, and in the FHIR standard it is carried as the Observation resource zib-Wound.WoundEdge.
What are the five edge conditions recorded under wondrand?
The wondrand codelist holds five values: Epithelisatie, new skin forming at the edge; Irritatie, irritated edge skin; Ondermijning, tissue lost beneath the edge, leaving a pocket; Verweking, edge softened from too much moisture; and Anders, other. The clinician records the one that matches what is seen at the rim of the wound.
What does a healthy wondrand look like?
A healthy wondrand is pale pink, thin, flat and level with the wound bed. A healthy edge advances a little at each assessment, and the open area of the wound shrinks. Contraction and epithelialisation of the edges is the clearest sign of healing.
What do rolled edges mean?
Rolled edges, also called epibole, mean that the rim of the wound has curled under and thickened. A wound with rolled edges is difficult to heal, because the rolled rim blocks new skin cells and slows both granulation and epithelialisation. They need a clinician’s attention, because the wound will stay open until the rolled rim is dealt with.
How does wondrand fit into the TIME model?
wondrand is the E in TIME, the wound assessment framework published by Schultz and colleagues in 2003, where TIME stands for Tissue, Infection or inflammation, Moisture, and Edge. The framework was later widened to TIMES and to TIMERS, adding Surrounding skin, Repair or regeneration, and Social factors. In all versions the edge is assessed last, because it answers the question the other letters lead to: is this wound closing?
When should a wound edge be checked by a clinician?
A wound edge should be checked by a clinician whenever a wound is assessed, and urgently if it shows spreading redness, swelling, warmth, discharge, a bad smell, increasing pain, or a wound that has not started to close. A wound that has not healed after twelve weeks warrants specialist review. Anyone worried about a wound should seek a clinician’s review.
Conclusion
wondrand is a small Dutch word for the part of the body that decides whether a wound closes: the edge where healthy skin meets the open wound, coded in Dutch health records as WondRand with the definition code NL-CM:19.2.11 and the SNOMED CT concept 449747006, described by five recorded conditions from epithelialisation to undermining, and given its own letter, the E, in the TIME model of wound assessment. A thin pink edge that advances a little at each review is the clearest sign of healing, while a rolled, undermined, macerated or stalled edge is both a sign and a cause of slow healing. The edge is where healing begins, and where it is measured. For anyone reading a Dutch wound record, wondrand needs no translation: the edge of the wound, and the place where healing begins.
