Metacarpal Fractures
& Boxer's Fracture
Jacksonville, FL
A broken hand bone is one of the most common fractures treated in hand surgery. Whether you need surgery depends on which knuckle, how much it's angulated, and whether it's rotated. Many boxer's fractures don't need surgery. When surgery is the right choice, Dr. Graham's goal is always immediate motion.
- Ring & small finger: up to 40° angulation tolerated
- Index & middle finger: only ~10° tolerated — much stricter
- Any rotation = surgery, regardless of angulation
- Patients may choose surgery even within thresholds
- Same fixation philosophy as finger fractures — immediate motion
- Non-op: ulnar gutter splint 3–4 weeks then buddy tape
Thumb metacarpal fractures (Bennett's, Rolando's) are a separate injury treated on a separate page. This page covers fingers 2–5.
Understanding the Injury
What Is a
Metacarpal Fracture?
The metacarpals are the five long bones of the hand, connecting the wrist to the finger knuckles. Fractures of these bones are among the most common injuries in hand surgery — occurring in sports, workplace accidents, falls, and direct blows. The most familiar is the boxer's fracture: a fracture of the neck of the 4th or 5th metacarpal (ring or small finger) from punching with a closed fist.
Not all metacarpal fractures are equal. The most important variable in deciding treatment is which ray is fractured — because the index and middle finger metacarpals behave very differently from the ring and small finger metacarpals. The ring and small finger CMC joints have inherent mobility that can compensate for apex palmar angulation. The index and middle finger CMC joints are nearly fixed — so the same degree of angulation that is perfectly acceptable in the small finger is a significant functional problem in the index finger.
Rotation is the other critical variable — and the one that always mandates surgery regardless of which ray is involved. A rotated metacarpal fracture causes the finger to scissor during fist closure, just as a rotated phalanx fracture does. No amount of splinting corrects rotation once the bone heals in that position.
In Dr. Graham's experience, the majority of boxer's fractures can be managed without surgery — but patients should be seen and properly assessed, not simply buddy taped at urgent care and sent home. X-rays determine angulation. Clinical exam determines rotation. Both matter.
The ring and small finger metacarpals (green) tolerate up to 40° of apex palmar angulation — their mobile CMC joints compensate. The index and middle finger metacarpals (red/amber) tolerate only about 10° — their fixed CMC joints cannot compensate, and angulation produces a permanent dorsal prominence and grip weakness.
The boxer's fracture (dashed line) most commonly occurs at the neck of the 5th metacarpal — the most distal part of the small finger metacarpal, just behind the knuckle.
The Key Variable
Angulation Tolerance by Finger Ray
The same degree of angulation means completely different things depending on which metacarpal is fractured. This is the most important concept in metacarpal fracture management.
Rotation Overrides
Every Angulation Threshold.
A 5th metacarpal fracture with 35° of angulation and no rotation — non-operative, no problem. The same fracture with any detectable rotation — surgery, no debate. Rotational malalignment causes the finger to scissor over its neighbor during fist closure, a permanent functional deficit that cannot be addressed with splinting. The clinical test is simple: make a fist and watch whether the finger crosses its neighbor. If it does, the fracture is rotated and needs to be fixed.
Patient Choice
You Can Choose Surgery
Even If You Don't "Need" It
Many patients with metacarpal fractures that fall within acceptable angulation thresholds still choose surgical fixation — and that is a completely reasonable decision. Surgery offers two meaningful advantages over non-operative management: earlier return to full hand function and earlier return to activity, including sports and manual labor.
Non-operative treatment requires a splint for 3 to 4 weeks followed by buddy taping and gradual motion. During that time, grip strength is limited, swelling persists, and activity is restricted. Surgical fixation — particularly with an intramedullary screw — allows immediate active motion with no splint, no waiting period, and no prolonged restriction. For athletes, musicians, tradespeople, or anyone who needs their hand back quickly, the logic is straightforward.
In Dr. Graham's experience, the conversation is always honest: here are your angulation numbers, here is whether you're within the surgical threshold, here is what non-operative treatment looks like, and here is what surgery offers. The decision belongs to the patient. Dr. Graham will explain both paths clearly and support whichever you choose.
Metacarpal Fracture Patterns
Not All Hand Fractures Are the Same
Location on the metacarpal — neck, shaft, base — and pattern affect both stability and treatment.
When Surgery Is Chosen
Same Philosophy as Finger Fractures —
Immediate Motion Is the Goal
Dr. Graham applies the same fixation algorithm to metacarpal fractures as phalanx fractures — starting with the least invasive construct that achieves stable fixation for immediate motion.
Preferred for Neck Fractures
A headless compression screw inserted retrogradely through the metacarpal head provides stable fixation with minimal soft tissue disruption. No pin sticking out. No splint required. Immediate active motion the same day.
Ideal for transverse and short oblique neck fractures — the most common pattern requiring fixation.
✓ Immediate motion — same day
For Spiral & Oblique Shafts
Small lag screws placed perpendicular to a spiral or oblique fracture plane provide compression and stability. Excellent option for long oblique shaft fractures where the fracture geometry allows inter-fragmentary compression.
Early active motion typically begins within days.
✓ Early motion — days post-op
For Comminuted & Unstable Patterns
Low-profile mini plates provide the most rigid fixation — used when neither IM screw nor lag screws achieve adequate stability. Comminuted fractures, base fractures, and CMC fracture-dislocations.
More soft tissue dissection required. Motion begins within 1 to 2 weeks.
✓ Motion at 1–2 weeks
Last Resort — Avoided When Possible
Pins protruding from the hand are painful with motion — patients stop moving, stiffness develops. Dr. Graham exhausts all other options before accepting K-wire fixation for metacarpal fractures.
When unavoidable, pins are removed at the earliest safe opportunity and therapy begins immediately.
⚠ Motion delayed — stiffness risk
Non-Operative Management
Splint Protocol for Conservative Treatment
For fractures within acceptable angulation thresholds — the ulnar gutter splint keeps the fracture protected while the MCP joints remain free to move.
X-Ray & Splint Applied
X-rays confirm fracture pattern and angulation. Ulnar gutter splint applied — holds the ring and small finger metacarpals in position with the MCP joints in approximately 70° flexion (intrinsic plus position) to prevent collateral ligament shortening.
Splint In Place
Ulnar gutter splint worn continuously. Follow-up X-rays at 1 week to confirm fracture is not displacing. Swelling management — elevation and ice. IP joint motion encouraged within the splint.
Splint Discontinued
At 3 to 4 weeks, when early healing is confirmed on X-ray, the splint is discontinued. Buddy tape to the adjacent finger supports the healing fracture. Active motion begins immediately.
Progressive Return
Buddy tape continued for protection during activities. Grip strength returns progressively. Most patients reach full functional recovery by 6 to 8 weeks. Sports return depends on activity demands.
Patient Experiences
In Their Own Words
“Dr Graham has taken care of our son’s broken hand and recently did surgery to release my trigger thumb 👍. He has a very pleasant bedside manner and extremely knowledgeable of his craft. He took his time explaining and answered my questions.”
“Dr. Graham performed hand surgery on my right hand. I had two broken metacarpals and a dislocation. The results of the surgery are great not only everything was restored in place but also full functionality of my hand is back!”
“Dr. Graham is an extremely personable and knowledgeable physician. I recently had a positive experience where Dr. Graham explained a procedure in detail and explained next steps. I have also referred friends and family to him and all have had great experiences.”
Common Questions
Metacarpal Fracture FAQ
What patients ask most often — many of them after being sent home from the ER with a splint.