title: Biological methods to enhance bone healing and fracture repair.
abstract: This article looks into normal physiological fracture healing with special emphasis on the diamond concept. A precise definition of nonunion of long bones is described. Most often inadequate fixation (too rigid or too loose) is the reason for nonunion in long bone fractures. Because a critical bone defect cannot be bridged, it may lead directly or indirectly (lack of fixation) to nonunion. Individual inadequate local biological characteristics are also often found to be the cause; poor soft tissue coverage as well as a lack of periosteum and muscle or fascia or skin defects can lead to compromised vascularity in situ. Systemic factors are now much more recognized, e.g., smoking, diabetes, and cachexia, as well as the limited impact of some medications, e.g., nonsteroidal anti-inflammatory drugs and steroids. Today's mode of treatment for nonunion is approached in this article, and suggestions for appropriate treatment of long bone nonunion is presented.
authors: Gent State University, Gent, Belgium. Electronic address: rene.verdonk@ugent.be.
authors: René
authors: R
authors: Verdonk
authors: Department of Orthopaedic Surgery and Traumatology, University Hospital, Gent, Belgium.
authors: Yannick
authors: Y
authors: Goubau
authors: Gent State University, Gent, Belgium.
authors: Fredrik K
authors: FK
authors: Almqvist
authors: Orthopaedic and Trauma Department, Monica Ziekenhuizen, Antwerp, Belgium.
authors: Peter
authors: P
authors: Verdonk
mesh_terms: D017102:Fracture Healing / Q000187:drug effects / Q000502:physiology*; D050723:Fractures, Bone / Q000503:physiopathology* / Q000601:surgery; D005599:Fractures, Ununited / Q000503:physiopathology* / Q000628:therapy; D006801:Humans