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Inverse Dynamics Analysis Evaluation of Tibial Tuberosity Advancement for Cranial Cruciate Ligament Failure in Dogs
Author(s) -
Bush Mark A.,
Sibley Pamela,
Owen Mark A.,
Burton Neil J.,
Owen Martin R.,
Colborne G. Robert
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.2012.00953.x
Subject(s) - medicine , cruciate ligament , stifle joint , patellar ligament , orthodontics , inverse dynamics , anatomy , surgery , anterior cruciate ligament , kinematics , patellar tendon , physics , classical mechanics
Objective To evaluate, using inverse dynamic analysis, the biomechanical outcome from tibial tuberosity advancement ( TTA ) surgery in dogs affected by unilateral cranial cruciate ligament failure ( CCLF ). Study Design Retrospective case series. Animals Dogs (n = 13) 11–20 months after surgery. Methods Kinematic and force data were collected from 13 dogs 11–20 months after TTA and inverse dynamics analysis of the dogs’ pelvic limb mechanical function performed. Angle, moment, and power were calculated for each joint. Total support moment ( TSM ) was calculated. Results Six dogs were affected on the right side ( R aff) and 7 on the left ( L aff). Peak stifle flexor moment was significantly larger for the right stifle compared with the left in L aff dogs, but similar in R aff dogs. Peak stifle extensor moment was significantly larger for the left stifle compared with the right in R aff dogs, and was also larger for the left stifle compared with the right in L aff dogs. Stifle power in early stance was larger on the left in R aff dogs and significantly larger on the right in L aff dogs. TSM was larger on the right in R aff dogs and significantly larger on the right in L aff dogs. Conclusions Affected limbs had a reduction in power of the stifle flexors. Irrespective of the side of CCLF , TSM was larger on the right side and the stifle extensor moment in late stance was larger on the left, perhaps indicating a mechanical limb dominance effect.