Hand Therapist Nigel Chua 
Most goalkeeper finger injuries are jammed middle joints, and most keepers are back in goal in 1 to 3 weeks, buddy taped. A broken finger takes 6 to 12 weeks, a mallet finger 6 to 8 weeks in a splint, and a thumb UCL sprain 4 to 6 weeks.
Most cricket-ball hits to the finger are sprains that settle in 1 to 3 weeks; mallet fingers and fractures take 6 to 12. How to tell which, and when you can bat, bowl and field again.
Bowler’s thumb is an irritated nerve on the inner side of the thumb, pressed by the edge of the thumb hole. It causes numbness, tingling and sometimes a tender lump, and the main fix is refitting the ball, padding the spot and cutting volume.
Thumb and wrist pain in dentists and hygienists usually settles in 4 to 8 weeks with wider handles, a rotated schedule and a short daily routine, without stopping work. Night numbness is the one with a clock.
Hand pain from writing is usually a grip problem plus a volume problem: a thicker pen, a lighter grip and 20 to 30 minute blocks settle most of it within 1 to 3 weeks. Here’s how to fix it, prepare for exams, and spot the problems that aren’t overuse.
Most guitar hand pain is overuse from a recent jump in practice hours or a setup change, and a simple ache usually settles in 1 to 3 weeks. What goes wrong in each hand, a return-to-playing plan, exercises, and the problem that isn’t an injury at all.
Skiers usually tear the thumb ligament; snowboarders usually break the wrist. Expect 4 to 6 weeks in a splint or about 6 weeks in a cast, and around 3 months before you’re back on the slopes. Get an X-ray before you fly home.
Arm pump and numb hands on a motorcycle mostly come from over-gripping, weight through the palms and vibration; fix the grip and setup and most riders improve within 2 to 4 weeks. Numbness that stays after the ride needs assessing.
Most CrossFit hand problems are rips, wrist extension overload and elbow tendon pain: a shallow rip closes in about 5 to 7 days and overload settles over 2 to 6 weeks of scaled training. A pop in a finger or elbow needs assessing within days.
Barista wrist pain usually comes from tamping through a bent wrist hundreds of times a shift. Lower the tamping surface, stack the wrist and lean with body weight, and most early tendon pain settles in 2 to 6 weeks.