A playing splint or playing cast is a padded or silicone support that protects a healing hand or wrist injury DURING SPORT, so an athlete can return before the injury is fully healed.
It’s used for some stable finger and metacarpal fractures, thumb ligament sprains, finger sprains and certain wrist injuries, once a surgeon has cleared it.
It’s only an option when
- the injury is stable,
- the sport’s rules allow it, and
- the position you play doesn’t depend on that hand for fine control
Protective, not therapeutic
- A treatment splint holds the injury in the position it needs to heal
- A playing splint absorbs impact and blocks the movement most likely to re-injure it for the length of a match or training session
- After the game, the treatment splint usually goes back on
A playing cast doesn’t make an injury safe to play on. It makes a stable injury safer to play on.
The types
- Silicone playing cast: molded around the hand or wrist, soft on the outside, firm enough to protect. Removed after play
- Padded thermoplastic splint: a rigid splint covered in closed-cell foam to meet contact sport rules
- Buddy strapping and sports taping: for finger sprains and some thumb injuries
- Thumb guards: taping or a low-profile splint blocking the movement that stresses the thumb ligament
Injuries it’s commonly considered for
- Stable metacarpal and finger fractures without rotation
- Skier’s thumb sprains that don’t need surgery
- Finger collateral ligament and PIP sprains
- Mallet finger, with the splint secured under tape so the tip can’t bend
- Some scaphoid fractures, a more cautious decision that depends on the fracture, the scan and the surgeon
Before you play in one
- Get clearance from the surgeon managing the injury
- Check the rules of your sport and competition. Many require soft outer padding, and officials decide on the day
- Train in it first, so you know how it changes catching, gripping and handling
- Know your position. A goalkeeper, a scrum half and a cricket wicketkeeper need that hand far more than some other positions
Stop and get it checked if
- A new impact on the injured area followed by more pain or swelling
- A finger crossing its neighbor when you make a fist
- Numbness, color change or the splint shifting during play
- Pain higher the morning after each match
For sport-specific injuries, see rugby, goalkeepers, basketball and volleyball and cricket.
This is one of dozens of splints a hand therapist makes. See what a hand therapist does for the full list.
Stable injury, surgeon’s clearance, rules checked, then play in it.
Every article on this site is written using the Closing Window Method: name the window your condition runs on, find where you are in it, and act while it’s still open.