The development, validation and internal consistency of the Norwich Patellar Instability (NPI) score

Toby O Smith; Simon T Donell; Allan Clark; Rachel Chester; Jane Cross; Deiary F Kader; Elizabeth A Arendt

doi:10.1007/s00167-012-2359-x

The development, validation and internal consistency of the Norwich Patellar Instability (NPI) score

Toby O Smith, Simon T Donell, Allan Clark, Rachel Chester, Jane Cross, Deiary F Kader, Elizabeth A Arendt

Research output: Contribution to journal › Article › peer-review

54 Citations (Scopus)

Abstract

No outcome measurements have previously been designed to assess patient-perceived patellar instability. The purposes of this study were to address this limitation and to describe the development and validation of the Norwich Patellar Instability (NPI) scores, a self-administered 19-item questionnaire to assess perceived patellar instability.

Original language	English
Pages (from-to)	324-335
Number of pages	12
Journal	Knee Surgery, Sports Traumatology, Arthroscopy
Volume	22
Issue number	2
DOIs	https://doi.org/10.1007/s00167-012-2359-x
Publication status	Published - Feb 2014

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10.1007/s00167-012-2359-x

http://dx.doi.org/10.1007/s00167-012-2359-x

Cite this

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title = "The development, validation and internal consistency of the Norwich Patellar Instability (NPI) score",

abstract = "No outcome measurements have previously been designed to assess patient-perceived patellar instability. The purposes of this study were to address this limitation and to describe the development and validation of the Norwich Patellar Instability (NPI) scores, a self-administered 19-item questionnaire to assess perceived patellar instability.",

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AU - Kader, Deiary F

AU - Arendt, Elizabeth A

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AB - No outcome measurements have previously been designed to assess patient-perceived patellar instability. The purposes of this study were to address this limitation and to describe the development and validation of the Norwich Patellar Instability (NPI) scores, a self-administered 19-item questionnaire to assess perceived patellar instability.

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DO - 10.1007/s00167-012-2359-x

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JF - Knee Surgery, Sports Traumatology, Arthroscopy

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