synonyms:Bennett fracture, thumb fracture, thumb metacarpal fracture ORIF
Bennett Fractrue ORIF CPT
Bennett Fractrue ORIF Indications
- Bennett fragment < 20% of the articular surface: CRPP
- Bennett fragment>20% of the articular surface:ORIF
Bennett Fractrue ORIF Contraindications
- Underlying advanced arthritis.
- Medically unstable
- Active infection
Bennett Fractrue ORIF Alternatives
Bennett Fractrue ORIF Pre-op Planning
- Ensure appropriate K-wires, plate and screws are available.
- Generally 2.0 or 2.7mm screws or
Bennett Fractrue ORIF Technique
- Sign operative site.
- Pre-operative antibiotics
- Bier block / regional block.
- Supine position. All bony prominences well padded.
- tourniquet
- Prep and drape in standard sterile fashion.
- For < 20% of the articular surface involvment: reduce the fracture by extending and pronating the metacarpal with longitudinal traction and downward pressure applied to the metacarpal base. Drill K-wire obliquely across the thumb trapeziometacarpal joint while the the fracture.
- Wagner incision between the abductor pollicis longus and the thenar muscles, extended proximally and radially to the radial border of the flexor carpi radialis.
- Reflect thenar muscles subperiosteally, incise joint capsule.
- Debride hematoma from Fracture site.
- Reduce Fracture. Fix with 2.0- or 2.7-mm lag screw.
- Close in layers.
- Place in Thumb spica splint.
Bennett Fractrue ORIF Complications
Bennett Fractrue ORIF Follow-up care
- Post-op: Thumb spica splint, elevation, NWB
- 7-10 Days: Wound check, Thumb spica cast
- 6 Weeks: K-wire removal, begin ROM exercises provided union is evident on xray.
- 3 Months: Evaluated ROM. Sport specific rehab.
- 6 Months:
- 1Yr: f/u xrays, Assess outcome.
Bennett Fractrue ORIF Outcomes
Bennett Fractrue ORIF Review References
- Rivlin M, Fei W, Mudgal CS. Bennett Fracture. J Hand Surg Am. 2015 Aug;40(8):1667-8. doi: 10.1016/j.jhsa.2015.05.017. Epub 2015 Jul 3.
- Carlsen BT, Moran SL. Thumb trauma: Bennett fractures, Rolando fractures, and ulnar collateral ligament injuries. J Hand Surg Am. 2009 May-Jun;34(5):945-52.
- Soyer AD. Fractures of the base of the first metacarpal: current treatment options. J Am Acad Orthop Surg. 1999 Nov-Dec;7(6):403-12.
- Greens Hand Surgery(link is external)
- Howard, CORR 220:46;1987
- Rockwood and Green's Fractures in Adults 6th ed, 2006