Abstract:
:Without an intact anterior cruciate ligament (ACL) to resist anterior tibial translation, it is commonly believed that ACL-deficient patients employ alterations in walking. Although there is no consensus in the literature about the specific kinematic and kinetic adaptations in these patients with ACL tears, the gait adaptation of quadriceps avoidance is perhaps the one most popularized. The purpose of our study was to determine whether quadriceps avoidance is common in patients with ACL-deficiency. We used a video-based motion analysis system and surface electromyography (EMG) to study 18 patients with ACL-deficiency. All patients demonstrated an internal knee extension moment during early mid-stance (similar to normal subjects). Quadriceps EMG activity was noted throughout most of stance. No patients demonstrated an internal knee flexion moment, a decreased internal knee extension moment or a decreased duration of quadriceps EMG activity during stance. The findings of this study would suggest that quadriceps avoidance as a gait adaptation in ACL-deficient patients may be less common than previously reported.
journal_name
Gait Posturejournal_title
Gait & postureauthors
Roberts CS,Rash GS,Honaker JT,Wachowiak MP,Shaw JCdoi
10.1016/s0966-6362(99)00038-7subject
Has Abstractpub_date
1999-12-01 00:00:00pages
189-99issue
3eissn
0966-6362issn
1879-2219pii
S0966636299000387journal_volume
10pub_type
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