title: Elbow lameness in dogs of six years and older: arthroscopic and imaging findings of medial coronoid disease in 51 dogs.
abstract: OBJECTIVE
  To report on the frequency and distribution of lesions of the medial coronoid process in dogs of six years of age and older, and to describe the arthroscopic findings in the affected joints. To compare those lesions seen in 'old' dogs with those seen in 'young' dogs between the ages of five and 18 months.
  
  
  METHODS
  A retrospective study of dogs six-years-old and older admitted for elbow lameness and subsequent elbow arthroscopy. The dogs were divided into groups according to the lesions of the medial coronoid process diagnosed during arthroscopic examination and computed tomography (CT). The radiographic degree of osteoarthritis (OA) and arthroscopically diagnosed lesions on the medial humeral condyle are described.
  
  
  RESULTS
  In 51 'old' dogs, five types of lesions could be identified on arthroscopy and CT: chondromalacia-like lesions (2%), fissures (27.5%), non-displaced fragments (12%), displaced fragments (27.5%), and erosions within the medial compartment without fragmentation (31%). A significantly different distribution of lesions was seen in 'young' dogs: fissures (23%), non-displaced fragments (45%), displaced fragments (29%), and erosions within the medial compartment without fragmentation (3%). No difference in radiographic degree of OA was seen between the two groups.
  
  
  CONCLUSIONS
  This study demonstrates the relatively high incidence of medial coronoid disease in dogs older than six years of age, and it highlights one particular problem in 'old' dogs: the complete erosion of the medial compartment.
authors.affiliation: Ghent University, Department of Veterinary Medical Imaging and Small Animal Orthopaedics, Merelbeke, Belgium. kathelijn.vermote@ugent.be
authors.forename: K A G
authors.initials: KA
authors.lastname: Vermote
authors.forename: A L R
authors.initials: AL
authors.lastname: Bergenhuyzen
authors.forename: I
authors.initials: I
authors.lastname: Gielen
authors.forename: H
authors.initials: H
authors.lastname: van Bree
authors.forename: L
authors.initials: L
authors.lastname: Duchateau
authors.forename: B
authors.initials: B
authors.lastname: Van Ryssen
mesh_terms: D000375:Aging / Q000502:physiology*; D000818:Animals; D001182:Arthroscopy / Q000662:veterinary*; D004285:Dogs / Q000254:growth & development*; D005552:Forelimb; D007839:Functional Laterality; D007596:Joints / Q000503:physiopathology* / Q000601:surgery; D007794:Lameness, Animal / Q000000981:diagnostic imaging* / Q000601:surgery*; D011859:Radiography; D012189:Retrospective Studies; D013045:Species Specificity