A study conducted by Jan van Aaken, a doctor who specializes in Orthopedic and Hand surgery at the University Hospital of Geneva, depicts the effectiveness of a soft wrap style for treating a boxer fracture when compared to a cast-like style. Both groups recovered similarly with no statistically significant difference.
Likewise, John C Dunn, a Hand Surgeon at the William Beaumont Army Medical Center, concluded that ‘reduction and cast immobilization is not necessary for boxer's fractures’ 1.
Thus, I wanted to design a splint that mimics the soft wrap style as there is no need to fully immobilize the whole hand
Design Criteria
Comfortability (Can take up to 6 weeks to heal)
Versatile fit (Try to make it a ‘one size-fits all’)
Affordability (Anyone can buy)
Specs of my hand
Circumference of my left pinky and ring fingers together is 3 ⅛ inches (Refer to black circle)
Length of pinky to 2 inches from where my palm ends is 7 ¾ inches (Refer to red line)
Pinky-palm Attachment
Ring Finger Attachment
Full TPU design
TPU has the rigidity and flexibility required for the task at hand
Time required to print per Makerbot
Pinky Attachment - 4 hours
Ring Attachment - 1 hour
10 % Infill
Breakaway support
Required to produce the arcs
Due to the shell-like design, the patient is free to customize the color of the elastic bandage on the outside
Adjustable straps on ring attachment allows for versatile finger fit
Velcro with neoprene
When the TPU cage is a soft gauze material for the hand to rest on
Mimics the soft wrap with more rigidity and compression
van Aaken J, Fusetti C, Luchina S, Brunetti S, Beaulieu JY, Gayet-Ageron A, Hanna K, Shin AY, Hofmeister E. Fifth metacarpal neck fractures treated with soft wrap/buddy taping compared to reduction and casting: results of a prospective, multicenter, randomized trial. Arch Orthop Trauma Surg. 2016 Jan;136(1):135-42. doi: 10.1007/s00402-015-2361-0. Epub 2015 Nov 11. Erratum in: Arch Orthop Trauma Surg. 2016 Oct;136(10):1481. PMID: 26559192.
Dunn JC, Kusnezov N, Orr JD, Pallis M, Mitchell JS. The Boxer's Fracture: Splint Immobilization Is Not Necessary. Orthopedics. 2016 May 1;39(3):188-92. doi: 10.3928/01477447-20160315-05. Epub 2016 Mar 29. PMID: 27018606.
https://www.youtube.com/watch?v=U8RjTgB6BQo (Subtract Command)
LinkedIn: https://www.linkedin.com/in/janroy-caraan-5194a71b4