Sizing Chart

The Joint Jack Company specializes in products that are effective in rehabilitation of the hand and upper extremity.

Joint Jack Splint Sizing Chart*

Splint Total Splint Length
Total Splint Length
Small 3" 7.62 cm
Medium 3.5" 8.89 cm
Large 4" 10.16 cm
Extra Large 4.5" 11.43 cm
Extra Extra Large 5" 12.7 cm

*Measuring Tips

  1. Measure the length of the finger from the distal palmar crease to the tip.
  2. If between sizes, choose the next larger size.
  3. The Large Joint Jack is most commonly used with adults.

Size of Middle Finger   Size of Splint