{"id":65242,"key":"Mid_Upper_Arm_Circumference_(MUAC)_Clasp_Band","title":"Mid Upper Arm Circumference (MUAC) Clasp Band","latest":{"id":1263127,"timestamp":"2026-09-02T12:45:03Z"},"content_model":"wikitext","license":{"url":"https://www.appropedia.org/Appropedia:Copyrights","title":"CC-BY-SA-4.0"},"source":"{{777 notice}}\n\n[[File:AkhenryFullCircle.jpg|thumb]]\n\n{{Project data\n| authors = User:akhenry\n| status = Designed, Prototyped\n| tools = 3d printer\n| location = Michigan, USA\n}}\n\n{{Device data\n| manufacturing-files = MUAC clasp.stl\n| schematics = File:MUAC clasp.scad\n}}\n\n'''\nFor an up to date, tested and peer-reviewed version see: [[3-D printing open-source click-MUAC bands for identification of malnutrition]]'''\n\n# Mid Upper Arm Circumference (MUAC) is measured on children suspected of being malnourished. The cut off for severe acute malnutrition (SAM) is 115mm. MUAC is traditionally measured using a tape measure like device, but there is a need for a simpler method. The \"Click-MUAC\" concept is for a band that clicks closed only if the child's arm is ≤115mm. It is important that this band be accurate, somewhat durable, and very easy to use.\n# This band is easily closed, without pulling the band tighter before it can be clasped.\n\n<gallery>\nFile:AkhenryMUACFullLength.jpg\nFile:AkhenryClaspEnds.jpg\n</gallery>\n</center>\n\n== Bill of Materials ==\n\n# ~1 gram of PLA filament\n## [[File:MUAC clasp.scad]]\n## [[File:MUAC clasp.stl]]\n\n== Tools needed ==\n\n# [[Athena Build Overview|MOST Delta RepRap]] or similar RepRap 3-D printer\n\n== Technical Specifications and Assembly Instructions ==\n\n# To customize the band, open the SCAD file and edit the band width, thickness, length, and clasp height and diameter. The print shown here uses (all dimensions in mm) width = 10, thickness = 0.5, length = 115, height = 4, and diameter = 4.\n# Save SCAD file as STL (or simply download STL given with above dimensions) and use slicer to generate gcode, which can then be printed.\n# ~15 minute print time with dimensions given above, 0.1mm layer height, and 50 mm/s print speed.\n\n== Cost savings ==\n\n# ~1 gram of PLA filament (at $22/kg): $0.03\n# Current MUAC tape can be purchased through UNICEF for $4/50 tapes ($0.08 per tape)\n# Clasp MUAC saves $0.05 per tape, and costs 38% of the UNICEF tapes\n\n[[:Category:Diagnostics]]\n[[:Category:Child Mortality]]\n[[:Category:Malnutrition]].\n\n[[:Category:OSAT 3D-Printable Designs]]\n\n{{Page data\n| license = CC-BY-SA-3.0\n| keywords = malnourished, malnutrition, severe acute malnutrition, Clasp Band, Mid Upper Arm Circumference, MUAC, Diagnostics, Child mortality, osat, 3d printing, pla plastic\n| sdg = SDG03 Good health and well-being, SDG10 Reduced inequalities\n| authors = User:akhenry\n| published = 2015\n| organizations = MTU, MOST\n| part-of = MY4777\n}}\n\n[[Category:Malnutrition]]\n[[Category:Diagnostics]]\n[[Category:Child mortality]]\n[[Category:3d printing]]"}