:Hook nail

The nail plate has volar concavity and a longitudinal hypercurvature. The patient may report discomfort, aesthetic impairment, and functional disability.{{cite journal | last1=Silva Junior | first1=Francisco Milton da | last2=Oliveira | first2=Marcelo Tavares | last3=Angelini | first3=Luiz Carlos | last4=Chung | first4=Wu Tu | title=Treatment of hook nails using the Bakhach's technique: a retrospective study | journal=Surgical & Cosmetic Dermatology | volume=13 | date=2021 | issn=1984-8773 | doi=10.5935/scd1984-8773.2021130039 | page=| doi-access=free }}

Hook nail is caused by trauma to the hyponychium. Hook nail is often seen after a fingertip amputation.{{cite journal | last1=Poumellec | first1=Marie-Anne | last2=Camuzard | first2=Olivier | last3=Dumontier | first3=Christian | title=Hook nail deformity | journal=Hand Surgery and Rehabilitation | publisher=Elsevier BV | year=2024 | issn=2468-1229 | doi=10.1016/j.hansur.2024.101649 | page=101649| pmid=38280632 }}

Some publications propose shortening the nail bed to the end of the bony support if it continues past the limit of the severed distal phalanx in order to prevent deformity.{{cite journal | last1=Kumar | first1=V.P. | last2=Satku | first2=K. | title=Treatment and prevention of "hook nail" deformity with anatomic correlation | journal=The Journal of Hand Surgery | publisher=Elsevier BV | volume=18 | issue=4 | year=1993 | issn=0363-5023 | doi=10.1016/0363-5023(93)90303-k | pages=617–620| pmid=8349967 }} Treatments intended to preserve length, such as replantation or flap reconstruction, should be used if the damage to the bone and soft tissue beneath the nail bed is too great.{{cite journal | last1=Pandya | first1=Ankur N. | last2=Giele | first2=Henk Peter | title=Prevention of the Parrot Beak Deformity in Fingertip Injuries | journal=Hand Surgery | volume=06 | issue=2 | date=2001 | issn=0218-8104 | doi=10.1142/S0218810401000631 | pages=163–166}}{{cite journal | last1=Netscher | first1=David T. | last2=Meade | first2=Ricardo A. | title=Reconstruction of Fingertip Amputations with Full-Thickness Perionychial Grafts from the Retained Part and Local Flaps | journal=Plastic and Reconstructive Surgery | publisher=Ovid Technologies (Wolters Kluwer Health) | volume=104 | issue=6 | year=1999 | issn=0032-1052 | doi=10.1097/00006534-199911000-00014 | pages=1705–1712}}

Surgical options for hook-nail deformity include nail excision or finger shortening; alternatively, soft tissue reconstruction, bone grafting, nail recession, or partial toe transfer may be used to try to add some support to the nail bed.

• Half and half nails
• List of cutaneous conditions

{{reflist}}

• {{cite journal | last1=Dumontier | first1=C. | last2=Gilbert | first2=A. | last3=Tubiana | first3=R. | title=Hook-Nail Deformity: Surgical treatment with a homodigital advancement flap | journal=Journal of Hand Surgery | volume=20 | issue=6 | date=1995 | issn=0266-7681 | doi=10.1016/S0266-7681(95)80057-3 | pages=830–835 | pmid=8770751 | ref=none}}
• {{cite journal | last1=Strick | first1=M. J. | last2=Bremner-Smith | first2=A. T. | last3=Tonkin | first3=M. A. | title=Antenna Procedure for the Correction of Hook Nail Deformity | journal=Journal of Hand Surgery | volume=29 | issue=1 | date=2004 | issn=0266-7681 | doi=10.1016/j.jhsb.2003.08.007 | pages=3–7 | pmid=14734059 | ref=none}}

{{Medical resources

| ICD11 = {{ICD11|EE10.3}}

| ICD10 = {{ICD10|L60.2}}

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| Scholia = Q5897957

| OB =hand/6111/hook-nail-deformity

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Category:Conditions of the skin appendages