Letter: Pincer and trumpet nails

Baran, Robert

doi:10.1001/archderm.110.4.639b

Cited by 12 publications

(6 citation statements)

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“…The nail configuration is influenced by genetic factors, the shape of the distal phalangeal bone [ 15 ], mechanical force [ 6 – 8 ], malnutrition [ 16 ], neurogenic factors [ 17 , 18 ], blood flow [ 19 , 20 ], and factors that cause the thinning and softening of nails [ 21 ]. The causative factors of pincer nail include hereditary, inappropriate physical forces due to ill-fitting shoes, and inappropriate nail cutting [ 22 – 26 ]. Recent researchers have revealed that mechanical forces may have a particularly pronounced effect on nail configuration and may be involved in nail deformity development [ 7 – 10 ].…”

Section: Discussionmentioning

confidence: 99%

Foot loading is different in people with and without pincer nails: a case control study

Sano

Shionoya²,

Ogawa

2015

Journal of Foot and Ankle Research

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BackgroundRecent studies suggest that pincer nails are caused by lack of upward mechanical forces on the toe pad. However, clinically significant pincer nails are also often observed among healthy walkers. It was hypothesized that in these cases, the affected toes do not receive adequate physical stimulation from walking and loading. To test this, the gait characteristics of pincer nail cases were assessed by measuring plantar pressure during walking.MethodsIn total, 12 bilateral pincer nail cases (24 affected feet) and 12 age- and sex-controlled healthy control subjects (24 ft) were enrolled in this prospective case–control study. Plantar pressure during free ambulation in both the barefoot and shod state was assessed using a digital pressure-plate system named S-Plate platform (Medicapteurs Co. France). First toe pressure and the frequencies of peak pressure in the first toe, metatarsal head, or other foot areas were calculated.ResultsIn both the barefoot and shod state, the pincer nail group had significantly lower pressure on the first toe than the control group. In both the barefoot and shod state, the peak pressure area was mostly the metatarsal head area in the pincer nail group, whereas it was mostly the first toe area in the control group. Binomial logistic regression analysis revealed that peak pressure area was a significant risk factor for pincer nail development.ConclusionWalking behavior appears to contribute to pincer nail development. Pincer nails of walkers could be treated by correcting the walking behaviour so that more pressure is placed on the toe pad.

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Section: Discussionmentioning

confidence: 99%

Foot loading is different in people with and without pincer nails: a case control study

Sano

Shionoya²,

Ogawa

2015

Journal of Foot and Ankle Research

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“…Pincer nails most frequently affect the large toes, but can occur in all toenails and even fingernails. Pincer nails most often arise as a result of mechanical deformation of the nail unit due to subungual exostoses, osteoarthritis, onychomycosis, psoriasis, or epidermoid cysts 2–6 . Pincer nails have also been reported in association with gastrointestinal malignancies, drug use, and Kawasaki's disease 7–9 .…”

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confidence: 99%

Pincer Nails: a New Surgical Treatment

Plusjé

2001

Dermatologic Surgery

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“…2,6,9,12,17 Surgical procedures are categorized based on whether they destroy or preserve the nail matrix. The first group includes Zadik's method, 18 which results in cosmetically unsatisfactory outcomes because the nail matrix is destroyed.…”

Section: Discussionmentioning

confidence: 99%