Grappling is the only common sport where the fingers are the primary weapon and the primary target at the same time.
Everything else on this site involves hands that get injured incidentally; in jiu-jitsu, judo and wrestling the hands are deliberately loaded to failure, resisted by someone actively trying to break the grip.
Which is why grapplers accumulate finger damage that looks like decades of manual labour by their mid-thirties, and why “just tape it” has limits.
The injuries that define the sport
- Swollen, aching middle finger joints that never fully settle: repeated PIP sprains and volar plate injuries from gi grips. The commonest complaint in any grappling gym, and the one most often written off as normal
- A pop in the finger while gripping, then pain at the base: a pulley injury, the same structure climbers tear
- A finger that will not bend at the tip after a grip was ripped away: jersey finger. This one has a surgical clock measured in days to weeks, and it is routinely mistaken for a jam
- A finger that will not straighten at the middle joint, getting worse over one to three weeks: boutonnière deformity. The delay is the trap
- Thumb pain after it was caught in a lapel or forced back: UCL injury, which costs pinch permanently if it goes unnamed
- A knuckle that sank after striking, in MMA training: metacarpal fracture
A finger that is still fat six weeks after a roll is not swollen. It is a joint that was injured and never treated.
Elbows and wrists
- Inner elbow pain from constant gripping: golfer’s elbow, the grappler’s elbow
- Elbow pain after an armbar that was held a beat too long: needs assessing rather than shaking off, particularly if there was a pop, and particularly if the elbow will not fully straighten afterwards — see elbow dislocation and the stiff elbow after
- Numbness in the ring and little fingers: cubital tunnel, from a nerve repeatedly compressed in a bent, loaded elbow
- Wrist pain on the little-finger side from posting and framing: TFCC injury
Taping, honestly
Buddy taping a sore finger to its neighbor lets you train and is reasonable for a minor sprain.
What it does not do is treat anything. A finger taped for eight months is a finger whose problem was never diagnosed.
X-taping across the middle joint supports it under load; circumferential taping at the base of the finger supports the pulleys. Both reduce symptoms rather than reduce damage.
What actually preserves your hands
- Stop grip fighting with fingers that are already injured. The single change that matters, and the one nobody makes
- Train no-gi during a finger flare. It removes the deep grip load almost entirely
- Grip the lapel with four fingers rather than crimping two
- Keep full extension. Straighten every finger fully several times a day. Grapplers lose extension slowly and do not notice until it is fixed
- Do not train through a finger that will not straighten. That is the one that becomes permanent
Get it assessed rather than taped if
- A finger cannot bend or straighten fully, even with help from the other hand
- A finger crosses over its neighbor when you make a loose fist
- There was a distinct pop, and function changed immediately
- The thumb feels unstable when you pinch
- Numbness anywhere, lasting beyond the session
- Swelling in one joint that has not reduced at all in three weeks
If you also strike, boxing and MMA hand injuries covers the impact side, and climbing pulley injuries covers the structure that gi grips share with crimping.
Your hands have to last longer than your competition career. Almost nobody trains as though that is true.
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.