title: Planned wedge size compared to achieved advancement in dogs undergoing the modified Maquet procedure.
abstract: OBJECTIVE
  To evaluate the patellar ligament to tibial plateau angle (PL-TPA) and amount of achieved advancement in dogs that underwent the modified Maquet procedure; compare wedge sizes recommended using two different planning techniques (Orthomed and modified tibial tuberosity advancement); and evaluate anatomical factors that predict the wedge size required to obtain a 90° PL-TPA.
  
  
  METHODS
  Pre- and postoperative radiographs of dogs that had a modified Maquet procedure performed were evaluated for the following: calculated wedge size using two different planning techniques, the actual wedge size used, the achieved tibial tuberosity advancement, and the changes in PL-TPA. Anatomical measurements of the tibia were evaluated and correlated with the actual wedge size.
  
  
  RESULTS
  Of the 38 modified Maquet procedures identified, 53% (n = 20) had a PL-TPA of 90° ± 5°. Actual achieved advancement of the tibial tuberosity was 30% less than the wedge size used. Changes in PL-TPA and tibial width persisted at eight weeks postoperatively without loss of advancement. The two planning techniques did not result in a significantly different selection of wedge size.
  
  
  CONCLUSIONS
  Current planning techniques for the modified Maquet procedure result in under-advancement of the tibial tuberosity. Both measurement techniques evaluated do not result in appropriate advancement.
authors.forename: M W
authors.initials: MW
authors.lastname: Kapler
authors.forename: D J
authors.initials: DJ
authors.lastname: Marcellin-Little
authors.affiliation: Prof. Simon C. Roe, North Carolina State University, College of Veterinary Medicine, Department of Clinical Sciences, North Carolina State University, 1052 William Moore Drive, Raleigh, NC 27606, United States, Phone: +1 919 513 6334, Fax: +1 919 513 6336, E-mail: Simon_Roe@ncsu.edu.
authors.forename: S C
authors.initials: SC
authors.lastname: Roe
mesh_terms: D000818:Animals; D016118:Anterior Cruciate Ligament / Q000601:surgery; D000070598:Anterior Cruciate Ligament Injuries; D001696:Biomechanical Phenomena; D061827:Dimensional Measurement Accuracy; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs / Q000293:injuries / Q000601:surgery; D010027:Osteotomy / Q000379:methods / Q000662:veterinary; D017847:Patellar Ligament / Q000033:anatomy & histology*; D012189:Retrospective Studies; D013977:Tibia / Q000473:pathology / Q000601:surgery*; D016896:Treatment Outcome
keywords: Cranial cruciate ligament; MMP; Maquet procedure; stifle