title: Metacarpophalangeal Joint Arthroplasty in the Setting of Trauma.
abstract: OBJECTIVE
  To report the outcome of pyrocarbon metacarpophalangeal (MCP) joint implants with traumatic nonreconstructible articular cartilage loss.
  
  
  METHODS
  We performed a review of all patients at a single institution who underwent a pyrocarbon MCP joint arthroplasty performed after an acute injury. Of 820 MCP joint arthroplasties performed, 10 were performed in 7 patients for open MCP joint trauma within 24 hours of the initial injury. Six were hemi- and 4 were total arthroplasties. The mean follow-up was 4 years. All injuries were the result of a direct laceration over the MCP joint.
  
  
  RESULTS
  There were no cases of revision or postoperative infection. Mean total arc of motions for the MCP, proximal interphalangeal, and distal interphalangeal joints were 56° (30° to 70°), 76° (40° to 100°), and 50° (21° to 70°), respectively. Postoperative mean grip, oppositional pinch, and appositional pinch strengths were 28, 9, and 11 kg, respectively. All patients except one reported no or mild pain at the last follow-up. Half of the patients required a tenolysis.
  
  
  CONCLUSIONS
  MCP joint arthroplasty was performed safely in the setting of acute complex open MCP joint trauma. Patients had preservation of adequate MCP joint motion and experienced little pain. MCP arthroplasty should be a consideration in cases of open MCP joint trauma to preserve motion, prevent pain, and avoid fusion.
  
  
  METHODS
  Therapeutic IV.
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN.
authors.forename: Matthew T
authors.initials: MT
authors.lastname: Houdek
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN.
authors.forename: Eric R
authors.initials: ER
authors.lastname: Wagner
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN.
authors.forename: Marco
authors.initials: M
authors.lastname: Rizzo
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN; Department of General Surgery, Division of Plastic Surgery, Mayo Clinic, Rochester, MN. Electronic address: moran.steven@mayo.edu.
authors.forename: Steven L
authors.initials: SL
authors.lastname: Moran
mesh_terms: D000369:Aged, 80 and over; D050806:Arthroplasty, Replacement, Finger / Q000295:instrumentation / Q000379:methods*; D002244:Carbon; D005260:Female; D005383:Finger Injuries / Q000601:surgery*; D018737:Hand Strength; D006801:Humans; D007595:Joint Prosthesis; D022125:Lacerations / Q000601:surgery*; D008297:Male; D008662:Metacarpophalangeal Joint / Q000293:injuries* / Q000601:surgery*; D008875:Middle Aged; D010147:Pain Measurement; D011474:Prosthesis Design; D016059:Range of Motion, Articular; D016896:Treatment Outcome
chemical_list: C009139:pyrolytic carbon; D002244:Carbon
keywords: Acute arthroplasty; MCP; metacarpophalangeal joint arthroplasty; pyrocarbon; trauma