%0 Journal Article %1 Chambers1998 %A Chambers, H. %A Lauer, A. %A Kaufman, K. %A Cardelia, J. M. %A Sutherland, D. %D 1998 %J J Pediatr Orthop %K Adolescent; Adult; Cerebral Palsy; Child; Child, Preschool; Electromyography; Gait; Humans; Knee Joint; Male; Muscle, Skeletal; Range of Motion, Articular; Treatment Outcome %N 6 %P 703--711 %T Prediction of outcome after rectus femoris surgery in cerebral palsy: the role of cocontraction of the rectus femoris and vastus lateralis. %V 18 %X Rectus femoris surgery was performed on 70 patients with cerebral palsy and stiff-knee gait. Fifty-three patients underwent distal rectus transfer, and 17 patients had distal rectus release with complete muscle mobilization. Gait analysis was performed preoperatively and postoperatively at a minimum of 1 year. Swing-phase peak knee flexion (PKF) was improved in the transfer group, allowing improved foot clearance and more efficient gait (p = 0.04). PKF in swing deteriorated slightly in the release group (p = 0.04). The presence of abnormal swing-phase electromyogram (EMG) activity in the rectus alone or abnormal combined rectus and vastus lateralis activity did not influence the PKF results in either surgery (p < 0.05). The Ely test had no predictive value in identifying patients with abnormal EMG activity (p > 0.05). Preoperative knee range of motion was not a significant variable in determining relative success of rectus surgery. No deleterious effects were observed in stance phase in either group (p > 0.05).

@article{Chambers1998, abstract = {Rectus femoris surgery was performed on 70 patients with cerebral palsy and stiff-knee gait. Fifty-three patients underwent distal rectus transfer, and 17 patients had distal rectus release with complete muscle mobilization. Gait analysis was performed preoperatively and postoperatively at a minimum of 1 year. Swing-phase peak knee flexion (PKF) was improved in the transfer group, allowing improved foot clearance and more efficient gait (p = 0.04). PKF in swing deteriorated slightly in the release group (p = 0.04). The presence of abnormal swing-phase electromyogram (EMG) activity in the rectus alone or abnormal combined rectus and vastus lateralis activity did not influence the PKF results in either surgery (p < 0.05). The Ely test had no predictive value in identifying patients with abnormal EMG activity (p > 0.05). Preoperative knee range of motion was not a significant variable in determining relative success of rectus surgery. No deleterious effects were observed in stance phase in either group (p > 0.05).}, added-at = {2014-07-19T19:14:45.000+0200}, author = {Chambers, H. and Lauer, A. and Kaufman, K. and Cardelia, J. M. and Sutherland, D.}, biburl = {https://www.bibsonomy.org/bibtex/2c258cff6a040abdfde37e40341c69790/ar0berts}, groups = {public}, interhash = {92f9dff7598c8c749d3b061c85f5ff3d}, intrahash = {c258cff6a040abdfde37e40341c69790}, journal = {J Pediatr Orthop}, keywords = {Adolescent; Adult; Cerebral Palsy; Child; Child, Preschool; Electromyography; Gait; Humans; Knee Joint; Male; Muscle, Skeletal; Range of Motion, Articular; Treatment Outcome}, number = 6, pages = {703--711}, pmid = {9821123}, timestamp = {2014-07-19T19:14:45.000+0200}, title = {Prediction of outcome after rectus femoris surgery in cerebral palsy: the role of cocontraction of the rectus femoris and vastus lateralis.}, username = {ar0berts}, volume = 18, year = 1998 }