Department of Dermatology, Shuang-Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.
Dermatol Surg. 2013 Mar;39(3 Pt 1):398-405. doi: 10.1111/dsu.12094. Epub 2013 Feb 8.
Pincer nail deformity (PND) is a dystrophy characterized by transverse overcurvature of the nail plate that may cause intractable pain and decrease the quality of life of patients.
To evaluated the efficacy of a superelastic nickel-titanium (SE NiTi) wire for the treatment of PND using transverse curvature improvement and subjective assessment of pain relief during and after the treatment.
SE NiTi wire was implanted over the distal tip of the nail for the treatment of PND in 43 patients (28 female, 15 male), with a total of 73 digits receiving treatment. Evaluations of improvement included measuring changes in transverse curvature of the nail and subjective assessment of pain relief throughout the follow-up period.
In all patients, treatment of the pincer nail with implantation of SE NiTi wire achieved satisfactory results. Significant improvement (p < .05) of the transverse overcurvature of the nail was seen in all patients at 2 months, and relief of pain was determined in 100% of cases throughout our follow-up period.
This simple SE NiTi wire insertion method is noninvasive and inexpensive, leaves no cosmetic disfigurement, and leads to excellent therapeutic results. Patients achieved great satisfaction. Thus, this technique should be considered the first line of treatment in the correction of mild to moderate PND.
钳状甲畸形（PND）是一种特征为甲板横向过度弯曲的营养不良，可能导致难以忍受的疼痛并降低患者的生活质量。
通过评估横向曲率改善和治疗期间和治疗后疼痛缓解的主观评估，来评估超弹性镍钛（SE NiTi）丝治疗 PND 的疗效。
对 43 名患者（28 名女性，15 名男性）的 73 个指甲远端尖端植入 SE NiTi 丝，以治疗 PND。评估包括测量指甲横向曲率的变化以及在整个随访期间主观评估疼痛缓解情况。
所有患者均采用植入 SE NiTi 丝治疗钳状甲，取得了满意的效果。所有患者在 2 个月时均观察到指甲横向过度弯曲的显著改善（p<.05），并且在整个随访期间，100%的患者疼痛缓解。
这种简单的 SE NiTi 丝插入方法无创、经济实惠、不会造成美容缺陷，并且治疗效果极佳。患者满意度很高。因此，这种技术应该被认为是治疗轻度至中度 PND 的首选方法。
