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Use of Locking Plate and Screws for Triple Pelvic Osteotomy
Author(s) -
Rose Scott A.,
Bruecker Ken A.,
Petersen Steve W.,
Uddin Nizam
Publication year - 2012
Publication title -
veterinary surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 79
eISSN - 1532-950X
pISSN - 0161-3499
DOI - 10.1111/j.1532-950x.2011.00927.x
Subject(s) - medicine , pelvis , osteotomy , radiography , complication , surgery , reduction (mathematics) , implant , orthodontics , mathematics , geometry
Objective To evaluate the efficacy and complication rate associated with use of a purpose‐specific locking triple pelvic osteotomy ( LTPO ) plate. Study Design Prospective study. Animals Dogs (n = 9; 15 hips). Methods Physical examination, plain film radiography, computed tomography ( CT ) of the pelvis, and coxofemoral arthroscopy were performed before unilateral triple pelvic osteotomy ( TPO ) or staged bilateral TPO . Radiographs were taken after each procedure and 3–5, 6–8, and ≥12 weeks postoperatively. Pelvic width was measured at 3 locations to evaluate pelvic canal narrowing. Results No screw loosening occurred. Complications occurred in only 1 hip (7%) where pullout of the locking plate–screw construct from the caudal iliac segment occurred because of a fracture of the cis ‐cortex; the dog made a full recovery after a salvage procedure. There was no significant reduction in the cranial pelvic width but a small reduction at the level of the acetabuli and ischiatic tuberosities was noted 3–5 weeks after the 2nd TPO . Conclusions The LTPO plate was associated with a lower complication rate than previously reported for TPO s using Slocum canine pelvic osteotomy plates ( CPOP ) and warrants further investigation. Pullout of the caudal plate–screw construct is a complication specific to LTPO implants. Bicortical screw purchase is recommended to prevent fracture of the cis ‐cortex and implant pullout.