Mallet finger occurs when the extensor tendon responsible for straightening the fingertip is disrupted at its attachment to the end bone of the finger. It happens most often from a ball striking the fingertip and forcing it into sudden flexion while the tendon is loaded. The result is a fingertip that droops and cannot be actively straightened, even though the rest of the finger moves normally. It is common in ball sports and in everyday activities — making a bed, reaching into a tight space, catching something awkwardly at the wrong angle.
What makes mallet finger time-sensitive is that the non-surgical treatment — continuous splinting of the fingertip in full extension for six to eight weeks — is highly effective when started promptly and unreliable when delayed. The splint must stay on continuously, day and night, for the entire treatment period. Removing it even briefly in the early weeks can restart the healing clock.
"I see patients regularly who waited six to eight weeks to see if the droop would correct itself. It does not correct itself."
- Fingertip droops but injury occurred within the last four to six weeks
- No large fracture fragment on X-ray involving the joint surface
- Middle and base joints of the finger move normally
- Skin intact — no open wound over the injury site
- Drooping fingertip left untreated for more than four to six weeks
- Large bone fragment visible on X-ray involving the joint surface
- Open wound over the injury site — risk of joint contamination
- Developing swan-neck deformity — middle joint hyperextending as tip droops
If your fingertip droops after a finger injury and you cannot actively straighten it, the correct response is an X-ray and a stack splint applied that day — not watchful waiting. This is one of the most satisfying conditions in hand surgery to treat conservatively when caught early, and one of the most frustrating to manage when it arrives late. The treatment is simple. The timing is the variable that determines the outcome.
Questions about finger injuries or mallet finger?
Ask on Instagram →- Bloom JM, Khouri JS, Athanasian EA. Clinical diagnosis and management of the mallet finger. Orthopedics. 2013;36(3):204–207. doi:10.3928/01477447-20130222-10
- Wehbé MA, Schneider LH. Mallet fractures. Journal of Bone and Joint Surgery. 1984;66(5):658–669. doi:10.2106/00004623-198466050-00002
- Handoll HH, Vaghela MV. Interventions for treating mallet finger injuries. Cochrane Database of Systematic Reviews. 2004;(3):CD004574. doi:10.1002/14651858.CD004574.pub2