title: Consequences of reaming with flat and convex reamers for bone volume and surface area of the glenoid; a basic science study.
abstract: BACKGROUND
  The effect of reaming on bone volume and surface area of the glenoid is not precisely known. We hypothesize that (1) convex reamers create a larger surface area than flat reamers, (2) flat reamers cause less bone loss than convex reamers, and (3) the amount of bone loss increases with the amount of version correction.
  
  
  METHODS
  Reaming procedures with different types of reamers are performed on similar-sized uniconcave and biconcave glenoids created from Sawbones foam blocks. The loss of bone volume, the size of the remaining surface area, and the reaming depth are measured and evaluated.
  
  
  RESULTS
  Reaming with convex reamers results in a significantly larger surface area than with flat reamers for both uniconcave and biconcave glenoids (p = 0.013 and p = 0.001). Convex reamers cause more bone loss than flat reamers, but the difference is only significant for uniconcave glenoids (p = 0.007).
  
  
  CONCLUSIONS
  In biconcave glenoids, convex reamers remove a similar amount of bone as flat reamers, but offer a larger surface area while maximizing the correction of the retroversion. In pathological uniconcave glenoids, convex reamers are preferred because of the conforming shape.
authors.affiliation: Department of Orthopaedic Surgery and Traumatology, Ghent University Hospital, De Pintelaan 185, 9000, Gent, Belgium. anne.karelse@telenet.be.
authors.forename: Anne
authors.initials: A
authors.lastname: Karelse
authors.affiliation: Department of Mechanical Engineering, Biomechanics Section, Catholic University of Leuven, Celestijnenlaan 300C, 3001, Heverlee, Belgium. Steven.Leuridan@kuleuven.be.
authors.forename: Steven
authors.initials: S
authors.lastname: Leuridan
authors.affiliation: Department of Orthopaedic Surgery and Traumatology, Ghent University Hospital, De Pintelaan 185, 9000, Gent, Belgium. alexander.vantongel@uzgent.be.
authors.forename: Alexander
authors.initials: A
authors.lastname: Van Tongel
authors.affiliation: Department of Orthopaedics, University Hospital Pellenberg, Weligerveld 1, B-3212, Pellenberg, Belgium. ph.debeer@gmail.com.
authors.forename: Philippe
authors.initials: P
authors.lastname: Debeer
authors.affiliation: Catholic University of Leuven, Celestijnenlaan 300C, 3001, Heverlee, Belgium. jos.vandersloten@mech.kuleuven.be.
authors.forename: Jos
authors.initials: J
authors.lastname: Van Der Sloten
authors.affiliation: Catholic University of Leuven, Andreas Vesaliusstraat 13, 3000, Leuven, Belgium. Kathleen.denis@kuleuven.be.
authors.forename: Kathleen
authors.initials: K
authors.lastname: Denis
authors.affiliation: Department of Orthopaedic Surgery and Traumatology, Ghent University Hospital, De Pintelaan 185, 9000, Gent, Belgium. lieven.dewilde@uzgent.be.
authors.forename: Lieven F
authors.initials: LF
authors.lastname: De Wilde
mesh_terms: D000369:Aged, 80 and over; D019643:Arthroplasty, Replacement / Q000295:instrumentation / Q000379:methods*; D005260:Female; D061165:Glenoid Cavity / Q000033:anatomy & histology / Q000601:surgery*; D006801:Humans; D007595:Joint Prosthesis; D008953:Models, Anatomic; D010003:Osteoarthritis / Q000601:surgery; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012785:Shoulder Joint / Q000601:surgery*