TY - JOUR
T1 - Kinetics and kinematics after the Bridle procedure for treatment of traumatic foot drop
AU - Hastings, Mary K.
AU - Sinacore, David R.
AU - Woodburn, James
AU - Paxton, E. Scott
AU - Klein, Sandra E.
AU - McCormick, Jeremy J.
AU - Bohnert, Kathryn L.
AU - Beckert, Krista S.
AU - Stein, Michelle L.
AU - Strube, Michael J.
AU - Johnson, Jeffrey E.
N1 - Funding Information:
We acknowledge funding support from the Midwest Stone Institute and the National Institutes of Health : K12 HD055931 and K30 RR022251 .
PY - 2013
Y1 - 2013
N2 - Background: The Bridle procedure restores active ankle dorsiflexion through a tri-tendon anastomosis of the tibialis posterior, transferred to the dorsum of the foot, with the peroneus longus and tibialis anterior tendon. Inter-segmental foot motion after the Bridle procedure has not been measured. The purpose of this study is to report kinetic and kinematic variables during walking and heel rise in patients after the Bridle procedure. Methods: 18 Bridle and 10 control participants were studied. Walking and heel rise kinetic and kinematic variables were collected and compared using an ANOVA. Findings: During walking the Bridle group, compared with controls, had reduced ankle power at push-off [2.3 (SD 0.7) W/kg, 3.4 (SD 0.6) W/kg, respectively, P b .01], less hallux extension during swing [-13 (SD 7)°, 15 (SD 6) °, respectively, P b .01] and slightly less ankle dorsiflexion during swing [6 (SD 4) °, 9 (SD 2) ° respectively, P = .03]. During heel rise the Bridle group had 4 (SD 6) ° of forefoot on hindfoot dorsiflexion compared to 8 (SD 3) ° of plantarflexion in the controls (P b .01). Interpretation: This study provides evidence that the Bridle procedure restores the majority of dorsiflexionmotion during swing. However, plantarflexor function during push-off and hallux extension during swing were reduced during walking in the Bridle group. Abnormal mid-tarsal joint motion, forefoot on hindfoot dorsiflexion instead of plantarflexion, was identified in the Bridle group during the more challenging heel rise task. Intervention after the Bridle procedure must maximize ankle plantarflexor function and midfoot motion should be examined during challenging tasks.
AB - Background: The Bridle procedure restores active ankle dorsiflexion through a tri-tendon anastomosis of the tibialis posterior, transferred to the dorsum of the foot, with the peroneus longus and tibialis anterior tendon. Inter-segmental foot motion after the Bridle procedure has not been measured. The purpose of this study is to report kinetic and kinematic variables during walking and heel rise in patients after the Bridle procedure. Methods: 18 Bridle and 10 control participants were studied. Walking and heel rise kinetic and kinematic variables were collected and compared using an ANOVA. Findings: During walking the Bridle group, compared with controls, had reduced ankle power at push-off [2.3 (SD 0.7) W/kg, 3.4 (SD 0.6) W/kg, respectively, P b .01], less hallux extension during swing [-13 (SD 7)°, 15 (SD 6) °, respectively, P b .01] and slightly less ankle dorsiflexion during swing [6 (SD 4) °, 9 (SD 2) ° respectively, P = .03]. During heel rise the Bridle group had 4 (SD 6) ° of forefoot on hindfoot dorsiflexion compared to 8 (SD 3) ° of plantarflexion in the controls (P b .01). Interpretation: This study provides evidence that the Bridle procedure restores the majority of dorsiflexionmotion during swing. However, plantarflexor function during push-off and hallux extension during swing were reduced during walking in the Bridle group. Abnormal mid-tarsal joint motion, forefoot on hindfoot dorsiflexion instead of plantarflexion, was identified in the Bridle group during the more challenging heel rise task. Intervention after the Bridle procedure must maximize ankle plantarflexor function and midfoot motion should be examined during challenging tasks.
KW - Biomechanics
KW - Foot and ankle
KW - Posterior tibialis tendon
KW - Tendon transfer
UR - http://www.scopus.com/inward/record.url?scp=84894624129&partnerID=8YFLogxK
U2 - 10.1016/j.clinbiomech.2013.04.008
DO - 10.1016/j.clinbiomech.2013.04.008
M3 - Article
C2 - 23684087
AN - SCOPUS:84894624129
SN - 0268-0033
VL - 28
SP - 555
EP - 561
JO - Clinical Biomechanics
JF - Clinical Biomechanics
IS - 5
ER -