Treatment of a Jammed Middle Finger
For a jammed middle finger, immediately obtain three-view radiographs (PA, lateral, and oblique) to rule out fracture or dislocation, then treat based on imaging findings: buddy tape to adjacent finger for simple sprains, strict splinting for 6-8 weeks for mallet injuries, or reduction with splinting for dislocations 1, 2.
Initial Assessment and Imaging
Radiography is always the first step for suspected finger trauma 1. A standard three-view examination is essential because two views miss significant injuries 1. The internally rotated oblique view in addition to standard projections increases diagnostic yield for phalangeal fractures 1.
Common pitfall: Do not dismiss "jammed finger" complaints as trivial—this term encompasses a spectrum of injuries including ligament sprains, tendon avulsions, fractures, and dislocations that require different treatments 3.
Treatment Algorithm Based on Findings
If Radiographs Show No Fracture (Simple Sprain)
- Buddy tape the middle finger to the ring finger for 2-3 weeks
- Allow early protected movement to prevent stiffness
- Ice and elevation in first 48 hours
- Return to activity as tolerated with continued buddy taping 2, 4
If Mallet Finger Injury (Drooping Fingertip)
This occurs from forced flexion of the extended fingertip, causing extensor tendon avulsion at the distal interphalangeal (DIP) joint.
- Continuous splinting of the DIP joint in full extension for 6-8 weeks is mandatory 2, 5
- The splint must never be removed during this period—even brief flexion restarts the healing clock 5
- Excellent outcomes occur even with delayed presentation 5
- Refer to surgery only if: avulsion fracture involves >1/3 of articular surface, volar displacement of distal phalanx, or interfragmentary gap >3mm 1
If Dislocation Present
Dorsal DIP dislocation: Reduce and splint in 15-30 degrees of flexion for 2-3 weeks 2
Volar DIP dislocation: Reduce and splint in full extension for 2-3 weeks 2
Dorsal PIP dislocation (most common): Reduce and buddy splint in slight flexion with extension-block splint 2
Volar PIP dislocation: Reduce and splint in full extension for 4-6 weeks 2
If Fracture Present
Distal phalanx tuft fracture: Splint DIP joint for 4-6 weeks 2, 4
Middle or proximal phalanx fracture with <10 degrees angulation: Buddy tape with early protected movement 2
Fracture with >10 degrees angulation, displacement, or malrotation: Refer for reduction or surgery 2
Key Clinical Pearls
The goal of all finger injury treatment is achieving full range of motion without scissoring 6. Early protected movement prevents stiffness but must be balanced against fracture stability 6.
If initial radiographs are negative but clinical suspicion remains high, either place in short arm cast and repeat radiographs at 10-14 days, or obtain CT or MRI to exclude occult fracture 1. However, this delay may lead to functional impairment 1.
Critical warning: Untreated mallet finger injuries lead to chronic swan-neck deformities that limit function 5. Flexor digitorum profundus avulsion fractures (forced extension of flexed DIP joint) usually require surgery and should be referred immediately 2.