Quantitative Evaluation of Median Nerve Motor Function in Carpal Tunnel Syndrome Using Load Cell : Correlation with Clinical, Electrodiagnostic, and Ultrasonographic Findings
Journal of Korean Neurosurgical Society
; : 232-235, 2013.
Article
in En
| WPRIM
| ID: wpr-46602
Responsible library:
WPRO
ABSTRACT
OBJECTIVE: Major complaints of carpal tunnel syndrome (CTS) are sensory components. However, motor deficit also impedes functional status of hand. Contrary to evaluation of sensory function, the objective, quantitative evaluation of median nerve motor function is not easy. The motor function of median was evaluated quantitatively using load cell and its correlation with findings of electrodiagnostic study (EDS) was evaluated. METHODS: Objective motor function of median nerve was evaluated by load cell and personal computer-based measurement system. All of the measurement was done in patients diagnosed as having idiopathic CTS by clinical features and EDS findings. The strength of thumb abduction and index finger flexion was measured in each hand three times, and the average value was used to calculate thumb index ratio (TIR). The correlation of TIR with clinical, EDS, and ultrasonographic findings were evaluated. RESULTS: The TIR was evaluated in 67 patients (119 hands). There were 14 males and 53 females, mean age were 57.6 years (range 28 to 81). The higher preoperative nerve conductive studies grade of the patients, the lower TIR was observed [p<0.001, analysis of variance (ANOVA)]. TIR of cases with thenar atrophy were significantly lower than those without (p<0.001, t-test). TIR were significantly lower in patients with severe median nerve swelling in ultrasonography (p=0.042, ANOVA). CONCLUSION: Measurements of median nerve motor function using load cell is a valuable evaluation tool in CTS. It might be helpful in detecting subclinical motor dysfunction before muscle atrophy develops.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Atrophy
/
Sensation
/
Thumb
/
Muscular Atrophy
/
Carpal Tunnel Syndrome
/
Ultrasonography
/
Evaluation Studies as Topic
/
Fingers
/
Hand
/
Median Nerve
Type of study:
Diagnostic_studies
/
Evaluation_studies
Limits:
Female
/
Humans
/
Male
Language:
En
Journal:
Journal of Korean Neurosurgical Society
Year:
2013
Type:
Article