heloma


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Related to heloma: hard corn, heloma molle

heloma

 [he-lo´mah]
heloma du´rum hard corn; see corn.
heloma mol´le soft corn; see corn.

heloma

/he·lo·ma/ (hēl-o´mah) corn.
heloma du´rum  hard corn.
heloma mol´le  soft corn.

cla·vus

, pl. clavi (klā'vŭs, -vī)
A small conic callosity caused by pressure over a bony prominence, usually on a toe.
Synonym(s): heloma.
[L. a nail, wart, corn]

heloma

; corn; clavus conical, focal, hyperkeratotic plug formed in response to intermittent pressure and friction, by local dermal inflammation and reduction of local epidermal desquamation, in relation to skin type and foot and/or lower-limb pathomechanical factors; plug apex is directed towards the dermoepidermal junction; dermal tissue deep to long-standing lesions undergoes fibrosis and ties skin to deeper tissues, reducing normal tissue movement and potentially exacerbating the condition; treatment involves enucleation of the keratin plug, identification and resolution of the underlying cause, and predisposing factors (see Table 1)
  • heloma durum (plural: helomata dura) hard corn, e.g. of plantar skin in association with a depressed metatarsal head, or at dorsum of an interphalangeal joint in a deformed toe

  • heloma miliare seed corn, e.g. of anhidrotic skin subject to excess friction or movement during gait

  • heloma molle soft corn, e.g. of interdigital skin, either at depth of interdigital sulcus in relation to excessive sagittal-plane movement of adjacent metatarsals, or overlying medial/lateral aspect of proximal or distal interphalangeal joints, especially in axially rotated toes ± hyperhidrosis

  • heloma neurovasculare excessively painful hard corn incorporating blood vessel and nerve elements (i.e. dermal tissue) within deepest area of the keratin plug; they bleed readily during treatment, are difficult to enucleate fully without the use of an anaesthetic, and are resistant to resolution

  • heloma vasculare hard corn incorporating blood vessel elements within deepest area of the keratin plug

  • Durlacher's corn hard corn within lateral nail sulcus of an axially rotated fifth, or occasionally fourth toe; cornified tissue may be difficult to distinguish from nail sulcus onychophosis

Table 1: Types and presentations of corn (clavus)
Corn typeName (abbreviation)Typical siteLesion characteristics
HardHeloma durum (HD)Over bony prominences and jointsDark yellow; hard central nucleus, overlain by callosity
SoftHeloma molle (HM)At base of interdigital webspace/interdigital aspect of digit, overlying an interpahalangeal jointWhite/yellow macerated hyperkeratosis; shallow, rubbery nucleus
SeedHeloma miliare (HMill)Weight-bearing skin
Areas of dry skin
Isolated or groups of tiny hyperkeratotic lesions with very hard nuclei
FibrousAreas of skin under high load
Long-standing lesions
Long-term fibrosis ties lesion to underlying tissues; difficult to resolve fully
NeurovascularHeloma neurovasculare (HNV)Areas subject to high load and torsionAs HD, plus elements of vascular/nerve tissue within the nucleus; enucleation is usually painful
Durlacher'sLateral nail sulcus of varus fifth and fourth toesLocally painful; can be overlooked as they resemble nail tissue
SubungualSubungual heloma (HSub-ung)Nail bed, below the nail plate, or encroaching under the nail platePain; local dystrophy, onycholysis and yellow discoloration of overlying nail

heloma

a corn.
References in periodicals archive ?
De acuerdo con la descripcion hecha por Zarini (24) y Christensen (6,7,8), solo en 2 casos se observo una modificacion importante de las dimensiones del habon, aunque sin repercusiones clinicas severas, 1 caso que se produjo la formacion de un minimo heloma, y 1 caso en que no se palpaba el producto infiltrado.
Se ha empleado una escala numerica de satisfaccion subjetiva por parte del paciente de 0 a 10, correspondiendo el 0 a la insatisfaccion total o la no efectividad del tratamiento y en 10 la satisfaccion total, que corresponderia a la eliminacion total de la sintomatologia de la exostosis, como es el heloma dermico y el dolor.
Nuestro estudio evidencia asimismo la mayor incidencia de esta patologia en el sexo femenino, lo que coincide con las series publicadas por Evison y Price (14), que atribuian al calzado la aparicion del heloma.
Es importante resaltar las complicaciones que ocasiona esta patologia al paciente, desde un dolor agudo, en algunos casos incapacitarte, hasta la disminucion de su calidad de vida por los efectos biomecanicos de la presencia del heloma en la marcha.
El tratamiento del heloma provocado por exostosis digital mediante infiltracion de gel de poliacrilamida segun la tecnica protocolizada en este estudio clinico hemos demostrado que es factible, reproductible y eficaz.
Posteriormente se inyecta el Aquamid por debajo del tejido subcutaneo para realizar una zona de amortiguacion de la presion del tejido oseo hipertrofiado o exostosis sobre el tejido dermico formando el callo o heloma.
La busqueda de un tratamiento exento de los efectos secundarios de los tratamientos clasicos, con un procedimiento alternativo empleando la tecnica de un implante subcutaneo en las zonas de queratosis podal, con el uso de un fluido de densidad variable, que actuaria como amortiguador entre la exostosis y el tejido dermico, eliminando la presion de la exostosis sobre la dermis y evitando la produccion de helomas, nos ha llevado a este estudio.
Lo que significa que no hay ninguna indicacion adversa para poder aplicar el producto en pacientes reales afectos de helomas digitales producidos por exostosis digitales, que provocan dolor, incapacidad y alteraciones biomecanicas.
Evaluacion y tratamiento de los helomas interdigitales.