Research article summary (published 29 Apr 2009):

Silent period and H reflex from soleus muscle as an index in a neuro-muscular function after reconstruction of anterior cruciate ligament.

Full Abstract

To clarify that the mixed nerve silent period (SP) and H reflex from soleus muscle may become an index expressed neuro-muscular function after reconstruction of anterior cruciate ligament (ACL), we studied the alteration of SP and H reflex from the soleus muscle in the patient with ACL reconstruction. Subjects were three patients with after ACL reconstruction, who were two male athletes (case A and B) and a female aerobics instructor (case C). Recording of SP and H reflex was performed longitudinally from one month post operation to six months post operation. As a result of this study, in case A, following findings were appeared; shortening of duration of SEP increasing the coefficient of variation of SP and increasing the amplitude ratio of H/M in non-operative side at the same time when his overusing activity of non-operative side. With case B, an appearance of long latency reflex (LLR) and an increase of coefficient of variation of SP in the operative side were verified in the period when many assists were required in order to correct motion image in rehabilitation. Concretely, from after the reconstruction over 5 months, LLR was appeared in SP of operative side, and increases of coefficient of variation was most remarkably in 4 months after the reconstruction, amplitude H/M ratio of operative side showed high value in 4 months after the reconstruction. With case C, remarkable problematical point was not found at the time of activity of daily life (ADL) acquisition and occupation return. So, with case C, feature findings of both SP and H reflex were not appeared. The results suggested that SP and H reflex from soleus muscle have become an index expressed neuro-muscular function of lower extremity and supra-spinal function in the patient after reconstruction of ACL.

Author information

Author/s: Daikuya, S (S); Ono, A (A); Suzuki, T (T); Yabe, K (K);

Affiliation: Kishiwada Eishinkai Hospital, Osaka, Japan. s_daikuya(-atsign-)eishinkaihsp.or.jp

Journal and publication information

Publication Type: Case Reports; Journal Article

Journal: Electromyography and clinical neurophysiology (Electromyogr Clin Neurophysiol), published in Belgium. (Language: eng)

Reference: -2009 May-Jun; vol 49 (issue 4) : pp 177-86

Dates: Created 2009/06/18; Completed 2009/07/29; Revised 2009/08/18;

PMID: 19534296, status: MEDLINE (last retrieved date: 8/21/2009)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MeSH Headings (categories) shown below.

Anterior Cruciate Ligament - injuries Athletic Injuries - physiopathology; rehabilitation; surgery Electromyography Female H-Reflex - physiology Humans

Male Muscle, Skeletal - physiopathology Predictive Value of Tests Reaction Time - physiology Recovery of Function - physiology Treatment Outcome

Note: Bold headings indicate primary MeSH headings or qualifiers.

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