Thumb MCP Problems

Thumb MCP hand graphic
Thumb MCP Problems

Hyperextension of the middle joint of the thumb beyond a neutral position may result in a painful and unstable joint, decreased power, and difficulty in grasping large objects. Without stabilizing or “blocking” the hyperextension, the joint can become dislocated resulting in a loss of function.

Stable Thumb Splint with PVX
SilverRing™ Stable Thumb Splint
SilverRing™ Stable Thumb Splint

For Hyperextension and Flexion

Use the SilverRing™ Stable Thumb Splint with Proximal Volar Extension (PVX) when there are significant CMC changes (very little or no motion at the CMC joint, a “step off” or subluxation at the CMC joint) or if the thumb moves predominantly in an adducted prehension pattern when grasping. This splint stabilizes the MCP joint dorsal and volar to prevent hyperextension and flexion. It is used for MP hyperextension when there are significant joint changes at the CMC joint with an adducted prehension pattern. A bracelet keeps the splint from migrating and is attached with a clasp (standard) or an S-hook (optional – if fine motor skills are limited). This splint can easily be worn at the same time with a splint on the IP joint.

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SilverRing™ Thumb MCP Splint with bracelet
SilverRing™ Thumb MCP Splint with bracelet

For Thumb MCP Hyperextension

Use the SilverRing™ Thumb MCP Splint to block hyperextension of a MCP joint. Use on thumbs that can actively abduct; do not use on thumbs that are adducted. A bracelet is available to secure this splint on the thumb and can be worn multiple ways. Try crisscrossing bracelet to secure bracelet better around the wrist. Please note, all MCP Splints will now have a 25° bend in the proximal ring. The bend will allow for better function and support.  Other options are:

  • To block radial deviation (skiers thumb, game keepers thumb) both Ulnar Lateral Support and Proximal Radial Extension need to be added.  Also, consider using Stable Thumb 3D Splint which provides more support. When extra supports are added the MCP splint will be sent unfinished to verify fit.  One remake is allowed at no additional charge.  Any further remakes or returns for credit will incur a 25% restocking fee
25° Bend
25° Bend
Trial Crisscross w/ twist tie
Trial Crisscross w/ twist tie
Ulnar Lateral Support
Ulnar Lateral Support
Proximal Radial Extension
Proximal Radial Extension
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SilverRing™ Thumb MCP Splint with bracelet
SilverRing™ Thumb MCP Splint with bracelet

Thumb MCP Splint with PVX

A proximal volar extension is frequently added to fit under the head of the metacarpal joint for additional stability. This is good if the MCP hyperextends more than 20 degrees.

PVX
PVX
Spoon PVX
Spoon PVX
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