possibly a fracture...one that involved the interphalangeal joint (knuckle). I would recommend xrays to aid in diagnosis. If it is non-displaced, rest, anti-inflammatories, splinting would help. Intra-articular fractures ( in the joint fractures) that are displaced, if left untreated, can lead to early arthritic changes. Strongly recommend orthopaedic evaluation....!
Hi. Repetitive strain on middle and ring fingers may suggest fracture or a swollen tendon sheath (e.g. trigger finger). Do you experience locking, snapping, popping or catching sensation in the finger while making a fist? Warm and cold compress, rest and pain relievers may help, but it is best that you see your physician right away for assessment. Hope this helps.