Deep cavity wound

The cavity wound can be managed conservatively with an appropriate dressing, or may require reconstructive surgery whereby the defect is filled by a rotational skin flap. Fungating malignant wounds often become cavity wounds, due to extensive tissue destruction. These patients also have the adde Cavity wounds in particular pose unique challenges for healthcare providers, beginning with a lack of standardised definition of what constitutes a cavity wound. These wounds can be difficult to assess and measure, and can thus be misidentified, which can lead to delayed provision of appropriate, evidence-based care

  1. Deeper wounds involve deeper cell membranes. If you have deep wounds, it is possible that hair follicles and glands beneath the skin layers are damaged. In many cases, the patients' bodies grow scar tissues very fast, so that the deep wounds are not completely healed
  2. ALLEVYN Plus Cavity is a cavity wound dressing that provides ALLEVYN hydrocellular technology in a unique 3 dimensional structure for effective management of deep wounds. The dressing has been designed to combine maximum absorbency and conformability with easy handling and less traumatic dressing changes
  3. Chaloner and Poole (1995) defined a cavity wound as wounds deeper than 2 cm. In a study of patients managed by four community clinics in one community trust locality, these authors found 54 patients with cavity wounds, out of a caseload of 1957 patients using their definition

When a wound is deep or tunnels under the skin, packing the wound can expedite healing. Without packing, a wound may close superficially before healing the deeper areas of the defect. 3 The purpose of the packing material is to absorb drainage, cleanse, fill, and moisten wound cavities to promote healing from the inside out. PMDs have been. Negative pressure wound therapy - Use of sub-atmospheric pressure to promote contraction, remove excess exudates, reduce edema and increase blood flow. Indicated for deep chronic open wounds, dehisced surgical sites, pressure ulcers, mesh grafts and tissue flaps; Requires trained clinician and is costly; Example - V. A. C. syste Sterile gauze should be used when packing a wound. Wound packing is a medical process that involves inserting a long thin strip of gauze into a deep wound to prevent abscesses from forming. Prior to packing a wound, all materials and tools should be sterilized and assembled, since sterilization will help prevent a serious infection Unfortunately, many of these types of wounds do not respond to mainstream wound care treatments and clinicians may need to create unique treatments for a tunneling wound. If necessary, wounds may require: Draining of the cavity to promote granulation. Surgical opening and debridement of the tunnels to properly clean and treat them

Best practices for the treatment of cavity wounds Mölnlyck

Wound packing is a technique used to fill a deep wound with material to promote wound closure from the inside out and prevent infectious material and debris from getting in. Enough packing is.. Wash the area gently with soap and water. Use soap and water to wash the area around the wound very gently with soap and water. Use a clean sponge, warm water, and antibacterial soap to clean the skin around the wound. Don't soak the wound and don't soap directly in deep wounds

ALLEVYN Plus Cavity Dressing | Smith & Nephew - US

WOUND CARE TERMINILOGY ORGANIZATION FOR WOUND CARE NURSES | WWW.WOUNDCARENURSES.ORG 3 Exudate: Fluid from the wound that can be serous, sanguineous or purulent. Fibrin: A protein involved in the clotting process required in the granulation phase of healing. Fascia: Connective tissue that covers muscle and found throughout the body. Fibroblast: An important cell used in wound healing A wound is a cut or opening in the skin. It can be just a scratch or a cut that is as tiny as a paper cut.. A large scrape, abrasion, or cut might happen because of a fall, accident, or trauma

Four stages of deep wound healing - Wound Care Societ

  1. Some wounds, notably very deep ones, are difficult to manage, as the cavity is large and the opening relatively small. In these cases poor drainage is common. Such wounds are best managed by the insertion of a tube drain or stud-type grommet. Drains can be progressively shortened as granulation of the wound bed occurs
  2. A cavity can exist in most wound aetiologies including chronic wounds (e.g. leg ulcers, pressure ulcers, malignant wounds [Figure 1] and diabetic foot ulcers), traumatic wounds (e.g. gun shot or stabbing), surgical wounds (e.g. wound dehiscence [Figure 2], sinus/fistula formation) and abscess drainage and excision (Timmons and Cooper, 2008; Wounds UK, 2016)
  3. In addition, improper packing of the wound can cause wound tunneling, as too much packing can damage newly granulated tissue and not enough packing can lead to excess fluid in the cavity. Trauma or external pressures such as shearing can also cause suspected deep tissue injuries that can result in tunnel creation

DURAFIBER is a soft sterile non-woven pad or ribbon dressing composed of cellulose ethyl sulphonate fibres. This highly absorbent and conformable dressing is designed to rapidly form a clear, cool gel on contact with wound fluid Neuropathic wounds are most common over bony prominences and often occur on the foot below the ankle. The wounds are usually small and deep with thick callus formation at the wound edges (called hyperkeratosis). An infected wound may have thick, yellow slough and tan to black necrotic tissue in the wound bed

Journal of Wound Care; 17: 4, 333-341. Wolcott R, Fletcher J (2014) The role of wound cleansing in the management of wounds. Wounds International; 5: 3, 25-31. Wounds UK (2013) Best Practice Statement. The Use of Topical Antimicrobial Agents in Wound Management. London: Wounds UK Indications. Lightly to moderately exuding necrotic, sloughy or granulating wounds, including pressure ulcers, leg ulcers, diabetic foot ulcers, surgical wounds, partial thickness burns, and abrasions You can also use it for deep cavity wounds such as pressure ulcers. How to use Mesalt-/-Clean the wound and open the package. Apply or loosely pack Mesalt (dry) to the wound. Do not soak before-hand. Apply Mepilex Border as cover dressing. Depending on the amount of exudate, Mesalt is normally changed daily, or more often if necessary

ALLEVYN Plus Cavity Dressing Smith & Nephew - US

Honey is useful for application todeep/cavity wounds. Tulle dressings impregnated with honeyare suitable for shallow wounds. Tulledressings can be extended out to 5x15,10x30. Algivon Plus is an alginate dressingimpregnated with honey. Do not use fordry wounds.. Use the appropriate formulation to suitthe patient's skin Wound Home Skills Kit: Pressure Ulcers | Your Pressure Ulcer 9 •ou may need to pack your wound ( Y see Wound Packing on page 29). • You may need a special bed or alternating pressure air mattress that can be ordered by your health care provider.4 •ou may need to use an alginate or foam dressing if there is moderate-to- Y heavy drainage. The new novel foam performed as a NPWT interface as effectively as the control standard foam. In deep wounds, the new foam was easier to remove, fragmented less, and showed less retention than the control foam. No marginal in-growth occurred, making removal less traumatic and reducing bleeding from cavity wall granulations

An Open Pilonidal excision wound is also called a Cavity Wound, meaning that a large chunk of tissue has been removed, leaving a cavity. Small cavity wounds can be closed with stitches but larger cavities need to replace the removed tissue so that the natural shape of the body is retained, along with padding, stability, and flexibility Based on your wound dimensions of 3 x 1 x 2, I would NOT suggest a wound VAC. The wound is relatively small and will heal without a wound VAC. The benefits of a wound VAC would not be significant and probably would not significantly increase your healing time. In addition, the wound VAC is relatively expensive and is quite a burden to carry

In the shown case, the patient was suffering with a deep cavity wound in the right breast with high levels of discomfort due to increased pain score and delayed healing post breast abscess removal. MaxioCel rope variant was used for the treatment regime and within 4 dressings over a period of 8 days lead to significant reduction in wound size. Pain-free removal associated with good efficacy and tolerance were observed with this new cohesive rope in the healing process of deep cavity wounds and could represent a therapeutic alternative. Suggest as a translation of deep cavity wounds Copy; DeepL Translator Linguee. EN. Open menu. Translator. Translate texts with the world's best machine translation technology, developed by the creators of Linguee. Linguee. Look up words and phrases in comprehensive, reliable bilingual dictionaries and search through billions of online.

Choosing a Wound Dressing Based on Common Wound

the traditional method of packing abscess cavities. Wicking occurs when a piece of cord that conveys liquid by capillary action is placed on or into a wound site; the physician put a wick in the wound to drain it. The terminology is a bit semantic. However, I prefer to place an absorbent material (gauze dressing) on the wound. Thi In order for a wound to heal, it has to be balance between its fluid level and dryness as well. If a wound is too dry, it can create scab and eventually scar when it is healed. But when a wound is too wet, it can cause infection or a wound that won't stop to weep. So it is always best when a wound is kept at its balanced moist level cavity wounds (e.g., infected, mal-odorous decubitus ulcers) with a thick sugar paste cleared the foul odor and debrided the necrotic tis-sue after several days. Granulated sugar or sugar paste can be instilled into deep wounds or cavities instead of packing them with ribbon gauze and antiseptics, which delays heal-ing and can be very painful. The wound care nurse Sarah spends some time training a new nurse, Jim, on how to properly pack the wound. Because the wound has left a deep cavity (open area), Pete's wound care includes.

We've gathered our favorite ideas for Full Text Local Management Of Deep Cavity Wounds, Explore our list of popular images of Full Text Local Management Of Deep Cavity Wounds and Download Every beautiful wallpaper is high resolution and free to use. Download for free from a curated selection of Full Text Local Management Of Deep Cavity Wounds for your mobile and desktop screens Deep cavities are difficult wounds to treat. Generally, deep cavities have a cutaneous opening, and a space with considerable depth from the opening is present [].The direction of the space is variable, and can be horizontal, vertical or oblique [].Iceberg-type pressure sores and cutaneous fistulae are typical examples Mesalt® Sodium Chloride Impregnated Gauze is indicated for use on heavily draining and discharging infected wounds in the inflammatory phase, deep cavity wounds, pressure injuries and surgical wounds. Warnings and Precautions Povidone iodine can be used both prophylactically during wound cleaning and therapeutically as leave-on application in contaminated chronic and acute wounds. A typical regimen for cleaning is a soaking time of 20 min each, using cycle frequencies of four to eight cycles per day [59]. 4.1 Contraindication. Askina ® Foam Cavity is contraindicated for ulcers resulting from infections, such as tuberculosis, syphilis, deep fungal infections bites or third degree burns. In case of infections with inflammatory signs (temperature, oedema, redness, pain) contact proper medical authority. Resume the use of Askina ® Foam Cavity when normal healing conditions are present again

Wound and Pressure Ulcer Managemen

Indications for use: wounds with deep purulent cavities, pustular skin diseases, wound and burn infection of various localization and complexity, long-term healing wounds and trophic ulcers. The medicine is applied a thin layer on the skin cleansed from purulent-necrotic masses, you can use napkins with ointment or bandages. Deep wounds pamp The basic steps of wound healing are: Stopping the bleeding (hemostasis). When your skin is cut, scraped, or punctured, you usually start to bleed. Within minutes or even seconds, blood cells start to clump together and clot, protecting the wound and preventing further blood loss. These clots, which turn into scabs as they dry, are created by a. Request PDF | Cavity wounds management: a multicentre pilot study | The objective of this study was to assess acceptability (based on pain at removal), efficacy and tolerance of an absorbent and.

What Are the Best Tips for Packing a Wound? (with pictures

A negative pressure hermetic drainage system for deep cavity wound surgical treatment. The system comprises: a columnar porous foam drainage piece (1), a wave-form extendable and retractable sealing cover (2), a medical film (3), a drainage tube (4), a fluid storage container (7), and a negative pressure source (8). The columnar porous foam drainage piece (1) is a hydrophilic foam, and is. It's designed to pack deep cavity wounds such as leg ulcers, pressure ulcers, venous leg ulcers and diabetic ulcers. It can also be used under compression bandaging. This packing dressing removes excess drainage, keeps wound moist and prevents foreign bodies from getting in the wound for the best wound healing environment Clean but nonhealing deep cavity wounds may respond to repeated treatments by application of negative pressure under an occlusive wound dressing (vacuum-assisted closure [VAC]). Hydrotherapy. Intractable, infected, cavity wounds sometimes improve with hydrotherapy using saline pulse lavage under pressure (PulsEvac)

A puncture wound is a deep wound that occurs due to something sharp and pointed, such as a nail. The opening on the skin is small, and the puncture wound may not bleed much. Puncture wounds can. Askina ® Calgitrol ® Paste ® may also be used for other wounds such as deep cavity or difficult-to-dress wounds. Regarding flat, superficial, low exuding wounds Askina ® Calgitrol ® Paste ® may be spread on the entire surface of the wound bed by using a sterile glove or a sterile spatula. It must be covered with an appropriate secondary. Hydrogen peroxide: reminder of risk of gas embolism when used in surgery. Do not use in closed body cavities or on deep or large wounds. Hydrogen peroxide is indicated at concentrations of up to 6. Granulation Tissue Definition. Granulation tissue is reddish connective tissue that forms on the surface of a wound when the wound is healing. Clinicians observe how granulation tissue is forming on a wound in order to assess how well the injury is being repaired by the body. When too much granulation tissue forms, it is called proud flesh Deep cavity wounds; Woun'Dres Hydrogel is clear, allowing visual inspection of wounds without removing the gel. It contains collagen-- a major building block of skin and connective tissue -- which has been shown to improve all phases of the healing process

Tunneling Wound Assessment and Treatment WoundSourc

Wound Packing: Application, Materials & Removal Study

• Wounds that require surgical debridement • Electrical burns prior to physician assessment. wounds that require surgical debridement (3) o Require extensive debridement o Gangrene tissue o Large pressure ulcers stage III and IV with tunnels/undermining. o Wounds with exposed deep tissue Penetrating abdominal trauma is seen in many countries. The most common cause is a stab or gunshot. The most common organs injured are the small bowel (50%), large bowel (40%), liver (30%), and intra-abdominal vascular (25%). When the injury is close range, there is more kinetic energy than those injuries sustained from a distance. Even though most gunshot wounds typically have a linear. Intrasite Conformable Wounds Dressings. - Contains IntraSite Gel. - For use in open wounds e.g. pressure sores, surgical wounds, malignant wounds healing by secondary intention, radiation burns and excoriated skin Pressure ulcers, pressure wounds, and pressure sores (stages 2, 3 and 4) Venous stasis ulcers ; Superficial scrapes ; Burns, second and third degree ; Partial-thickness and full-thickness wounds ; Tunneling wounds ; Infected wounds ; Exuding / draining wounds ; Deep cavity wounds

Foam dressings are used for heavily exuding wounds, like weeping ulcers, deep cavity wounds, and wounds caused after debridement. These dressings can be used for a longer duration of time, as they. As noted above, the types of wounds said to take a long time to heal were deep cavity wounds, pilonidal sinuses and perianal abscesses, and wounds arising from hernia repairs where surgical mesh was inserted during the operation, which were said to take weeks, months or even years to heal. Wound healing was described as often difficult to achieve

3 Ways to Pack a Wound - wikiHo

- For use in open wounds e.g. pressure sores, surgical wounds, malignant wounds healing by secondary intention, radiation burns and excoriated skin. Intrasite Conformable Wounds Deep Cavity Packing Dressings 10cm x 40cm | eBa The deep cavity wound demonstrated good progress with healing, and eventually healed completely by 2 months from initial surgical debridement. CONCLUSIONS. In a deep cavity wound with a small tunneled opening, NPWTi-d used as an irrigation channel is effective in reducing dead space and removing debris, in addition to avoiding the need for.

HydroClean® plus Cavity. For deep and/or cavity wounds. HydroClean® plus cavity is covered with polypropylene knitted fabric on all sides. This allows to pack deep or cavity wounds with HydroClean® plus cavity. Packed wounds should be covered with HydroClean® plus or a Hydrofilm® In recent years, negative-pressure wound therapy (NPWT), cellular and/or tissue-based products (CTPs), and platelet-rich plasma (PRP) have been increasing in popularity as treatments for refractory wounds. 2-4 For deep burn wounds that are difficult to repair, a single form of treatment is usually ineffective. This article reports a rare case. 1. Primary healing: The wound is clean and all layers of your skin are closed. Your wound will heal in a minimum amount of time, with no separation of the wound edges and with little scar formation. 2. Secondary healing: The wound's deep layers are closed, but the superficial (top) layers are left open to heal from the inside out. The wound. In contrast, the soft point bullets disintegrated completely, and barium titanate covered the entire wound cavity. Deep penetration of potential exogenous bacteria can be simulated easily and reproducibly with barium titanate particles shot into a gelatin block

The Allevyn Plus Wound Cavity Dressing, by Smith and Nephew, is a high-absorbency dressing material to manage and hold fluids within deep wounds. Smith and Nephew use what they call hydrocellular technology with their cavity wound dressing, which uses absorbent foam chips with an outer film that resists adhering to wound tissues. However this dressing will stay in place when inserted and. excessive pressure inside the wound and may cause pain and discomfort. OVERVIEW OF MATERIALS THE METHOD 1. Rinse the wound with sterile saline. 2. Pack the wound cavity with wound filler. How to: Pack the strip loosely into the wound cavity in circular or criss‐cross fashion using a long sterile Q‐tip A tunneling wound is a wound that has progressed from an initial superficial disruption in the skin surface to a deeper level that can include skin layers and muscle tissue. The wound forms a. If it is a very deep wound, or the edges are very far apart, or you cannot stop the bleeding, go to your nearest Minor Injuries Unit or A&E in case it needs stitches. Use an antiseptic around the wound area to help keep the germs away. Put a clean dressing over your wound to protect it from germs

Exam 2-Wound Care - Physician Assistant 731 with Brown at

Stages of Wound Healing: 4 Stages and What to Expec

There are certainly other types of wounds not included in the 5 categories discussed. Some examples of other types of wounds include: -- contusion, commonly known as a bruise -- thermal, chemical or electrical burn -- penetrating wound, which extends into an internal organ or body cavity -- skin ulcers, a type of chronic cavitary skin sor Discharge Instructions: Packing a Wound. You will need to care for a special dressing, or packing, in your wound. When a wound is deep, or when it tunnels under the skin, packing the wound can help it heal. The packing material soaks up any drainage from the wound, which helps the tissues heal from the inside out An alternative dressing for cavity wounds, Allevyn Cavity Wound Dressing (Smith & Nephew Medical), consists of foam chips enclosed in a soft flexible plastic pouch the surface of which contains small perforations to allow the entry of exudate. The dressing, which is highly absorbent, is produced in a small range of shapes and sizes to fit. + Deep TissueInjury Intact or non-intact skin with localized area of persistent non- blanchable deep red, maroon, purple discoloration or epidermal separation revealing a dark wound bed or blood filled blister. Pain and temperature change often precede skin color changes. Discoloration may appear differently in darkly pigmented skin

Wound Care Today - Article: Addressing the challenges of

Tunneling Wounds or Sinus Tracts WoundSourc

Penetrating trauma is an injury that occurs when an object pierces the skin and enters a tissue of the body, creating an open wound. (In blunt, or non-penetrating trauma, there may be an impact, but the skin is not necessarily broken.)The penetrating object may remain in the tissues, come back out the way it entered, or pass through the tissues and exit from another area Deep cracks might take about three weeks to heal completely. However, if the wound is infected with bacteria and fungi it can take few months to heal. Cut on Tongue Turns White. A cut on your tongue that turns white is an indication that the wound if forming an ulcer or a sore. Most mouth ulcers are associated with whitish color on the affected. Measuring Wounds - Tunneling. In comparison to Tunneling or sinus tract is a path that forms on the surface edge of a wound going to any direction resulting in dead space.Hence tunnel, that forms because the fascia that holds muscles together is cut. Tunneling is opposite from undermining because it involves only a small area of the wound, however it can be deep Keywords: Deep cavity, Pressure sore, Fistula, Perforator flap, De-epithelization Background Deep cavities are difficult wounds to treat. Generally, deep cavities have a cutaneous opening, and a space with considerable depth from the opening is present [1]. The direction of the space is variable, and can be horizontal, vertical or oblique [2] These wound packing products are used in deep wounds where there is a possibility of the exudate pooling in the vacant space. The absorbency of the filler depends on the product used. We at Shop Wound Care, have a wide range of wound fillers from top selling brands such as Ferris Mfg. Corp. , Dumex/Derma Sciences , 3M Medical , etc

DURAFIBER Instructions for Use Smith & Nephew - US

Cavity Wound Dressings Without Polyurethane Film. Cavity wound dressings without polyurethane (PU) film layer are hydrophilic medical grade PU foams made of a soft textured material, designed to handle high volumes of wound exudate and provide a comfortable wear for the patient. The product has a high moisture vapor permeability penetrating wound: [ wo̳nd ] an injury or damage, usually restricted to those caused by physical means with disruption of normal continuity of structures. Called also injury and trauma . blowing wound open pneumothorax . contused wound one in which the skin is unbroken. wound drain any device by which a channel or open area may be established. For a chest wound, be careful. Cover the wound with something like kitchen foil, a plastic bag or cling-film and only cover three sides of the wound and leave one un-taped or bandaged down. Air needs to be able to escape from one side of the bandage to prevent it from entering the pleural cavity in the chest This video follows a previous clip (about foam) and explains what we did. My thoughts on foam in cavities and the way a tree reacts to the foam are what I di.. It is particularly applicable for large area of wounds with irregular defect or deep cavity space after debridement of local infection in clinical practice. However, each procedure during the operation should be performed with cautions, especially during the procedure of cutting off the multi-leaf skin flaps and muscle flaps

How to choose the right treatment and dressing for the woun

• Deep cavity wounds 5cm x 5cm 7.5cm x 7.5cm 10cm x 10cm 2cm x 1m (Cavity) 285580 285780 286080 285280. MÖLNLYCKE - WOUND CARE PRODUCTS PRODUCT DESCRIPTION AREAS OF USE SIZE CODE 4 ANTIMICROBIAL DRESSINGS Mepilex® Border Ag Antimicrobial absorbent self-adherent foam dressin Participants in the non-packing group managed their own wounds by using absorbant dressings to cover the area with no internal dressing. Participants were seen fortnightly until the cavity had healed. It is not clear whether time to complete wound healing is affected by packing of cavity (and what evidence exists is very low quality) Tree wounds often appear ragged where the bark is torn during the injury. This is common during branch breakage and when the trunk of the tree has been scraped. To repair this type of damage, cut off any ragged bark edges with a sharp knife. Take care not to remove any healthy bark and expose more live tissue than necessary CLAIMED FEATURES: Designed for cavity wounds. PolyMem Wic expands within the wound cavity to fill dead space, keeping the wound bed clean and moisturized while absorbing excess fluid. As this is a wound filler, this configuration comes without the PolyMem thin film backing. OPTIONS: 3 X 12 (8cm X 30cm), 16 Grams, 12 per Box - 1 Box per Case

Learn about the steps you can follow to develop the most effective treatment plan to promote healing with the 7 Steps to Effective Wound Management CLAIMED FEATURES: Designed for cavity wounds. PolyMem Wic expands within the wound cavity to fill dead space, keeping the wound bed clean and moisturized while absorbing excess fluid. As this is a wound filler, this configuration comes without the PolyMem thin film backing. OPTIONS: 1 X 3 (2.5cm X 7.6cm), 1.3 Grams,14 per Box - 5 Boxes per Case

When is wound cleansing necessary and what solution should

Mesalt sodium chloride dressing for discharging wounds

Surgical Approaches to the Oral Cavity | Pocket DentistryRibbon worms are unsegmented - Plasma MembraneCan't get to the doctor? No problem, just stick out yourSmith and Nephew INTRASITE Conformable - Bowers Medical Supply

It takes about 30 seconds to get a stable reading from the CAM. A rapid pass over the wound will not detect remaining contamination. The wound is debrided and excised as normal, maintaining a no-touch technique. Hypochlorite solution (0.5%) may be instilled into deep non-cavity wounds following the removal of contaminated cloth A permanent cavity cut through it is bad enough - and what you'd expect with a standard handgun bullet. But a temporary cavity, like one from a rifle, would destroy it by stretching and tearing it completely apart. A gunshot wound to the liver made by a handgun might be survivable, but if made by a rifle it would be game over A case of a deep seated abscess cavity communicating with exterior managed by osmotic debridement and vacuum therapy is presented along with a brief review of literature. Keywords: Hypertonic saline hydrogen peroxide vacuum dressing wound care Introduction Managing deep seated abscess cavities continues to be the biggest surgical challenge 2. Direct wound contact is a prerequisite for the effective binding of microorganisms. Always apply the dressings in a way that ensures direct contact with the wound surface. 3. In deep or cavity wounds, apply Cutimed® Sorbact® swabs or ribbon gauzes and leave a part of the dressing sticking out of the wound so it can easily be removed. I Wounds of the head and neck may be closed up to 24 hours after injury because of the rich vascular supply of the face and scalp. Secondary intention — Indications for secondary closure (ie, by granulation) include : Deep stab or puncture wounds that cannot be adequately irrigated Contaminated wounds Abscess cavitie Assessment and Management of Sacral Pressure Ulcers. Sacral pressure ulcers are caused when bone pinched the overlying tissues. The pelvis, hip or lower spine are usually to blame (i.e., ischium, greater trochanter, or sacrum). When the patient's body weight rests on one of these bones, it compresses the tissue and prevents blood from flowing.