Usefulness of Ultrasonography to Predict Response to Injection Therapy in Carpal Tunnel Syndrome
Annals of Rehabilitation Medicine
; : 388-394, 2011.
Article
in En
| WPRIM
| ID: wpr-113060
Responsible library:
WPRO
ABSTRACT
OBJECTIVE: To verify the feasibility of initial parameters of ultrasonography or electromyography for the prediction of effect after steroid injection therapy in a carpal tunnel syndrome (CTS) patient. METHOD: We recruited individuals with clinical and electrodiagnostic evidence of CTS. Results from the Boston self-assessment questionnaire, median motor and sensory nerve conduction studies, and median nerve ultrasonography were evaluated at baseline, 1 month, and 6 months after injection. Evaluation of median nerve ultrasonography parameters included measurements taken at the maximal swelling point (MS), 2 cm proximal from MS (2MS), and 12 cm proximal from MS (12MS), and its ratio (MS/12MS, 2MS/12MS) was calculated. The correlation between improvement of the symptom score after treatment and baseline parameters was estimated. RESULTS: Fourteen individuals (14 women, mean age 53.8 years) with 22 affected wrists were enrolled. After steroid injection therapy, clinical and electromyographic parameters showed significant improvements at 1 month or 6 months after injection, and ultrasonographic parameters showed significant changes in maximal area and area ratio (MS/12MS) of the median nerve. Symptom score improvement showed a positive correlation in the initial 2MS and ratio of 2MS/12MS after 6 months (p<0.05). CONCLUSION: Most of the improvements occurred during the first month after injection and lasted up to 6 months. The initial median nerve swelling and its ratio may be a useful predictor of response after steroid injection.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Self-Assessment
/
Wrist
/
Carpal Tunnel Syndrome
/
Boston
/
Surveys and Questionnaires
/
Electromyography
/
Median Nerve
/
Neural Conduction
Type of study:
Prognostic_studies
Limits:
Female
/
Humans
Country/Region as subject:
America do norte
Language:
En
Journal:
Annals of Rehabilitation Medicine
Year:
2011
Type:
Article