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DrGoniometer: a reliable smartphone app for joint angle measurement
  1. Stefano Vercelli1,
  2. Francesco Sartorio1,
  3. Elisabetta Bravini2,
  4. Giorgio Ferriero3
  1. 1Laboratory of Ergonomics and Musculoskeletal Disorders Assessment, Division of Physical Medicine and Rehabilitation, Salvatore Maugeri Foundation, Scientific Institute of Veruno, IRCCS, Veruno, Italy
  2. 2Italian Society of Physiotherapy, Firenze, Italy
  3. 3Division of Physical Medicine and Rehabilitation, Salvatore Maugeri Foundation, Scientific Institute of Lissone, IRCCS, Lissone, Italy
  1. Correspondence to Dr Stefano Vercelli, Fondazione Salvatore Maugeri, IRCCS, Laboratorio di Ergonomia e Valutazione dei Disturbi Muscoloscheletrici, Divisione di Rieducazione e Recupero Funzionale, Istituto Scientifico di Veruno, Via per Revislate 13, Veruno, NO I-28010, Italy; stefano.vercelli{at}fsm.it

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Name

DrGoniometer.

Category

Medicine.

Platform

Apple (iOS 7.0 or later). Available for iPhone, iPad and iPod touch.

Cost

iOS €11.99, US$11.99.

About the app

DrGoniometer is the first app validated for image-based goniometry.1 Its aim is to provide quick, simple measurement of joint mobility with all the advantages of photographic or video goniometry. Measurement is obtained by positioning a virtual goniometer—represented by two or three markers visible on the smartphone screen—on a photograph or video obtained via the smartphone camera (figure 1–3). Picture taking is supported with perpendicular reference to ground level, iPhone alignment identification and patient central position referencing. The clinician chooses the desired joint or goniometric procedure from a list and the respective motion to measure (eg, flexion and extension), then simply takes a photo of the limb, saves it, measures the joint angle and observes the value.1 DrGoniometer also offers the possibility to analyse …

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