A1 pulley stretching treats trigger finger: A1 pulley luminal region under digital flexor tendon traction.
Clin Biomech (Bristol, Avon)
; 72: 136-140, 2020 02.
Article
in En
| MEDLINE
| ID: mdl-31865255
ABSTRACT
BACKGROUND:
A1 pulley stretching is recognized as a clinically beneficial treatment for trigger finger. It is thought to lead to an increase in the cross-sectional area of the A1 pulley luminal region, thus improving trigger finger symptoms. The purpose of the present study was thus to evaluate the resultant forces during stretching that increase the CSA of the A1 pulley luminal region using fresh-frozen cadavers.METHODS:
Using seven fingers from three fresh-frozen cadavers to replicate A1 pulley stretching, we investigated the resultant forces during stretching that increase the cross-sectional area of the A1 pulley luminal region. The traction forces of the flexor digitorum profundus tendons were increased in steps to 150 N, and the cross-sectional area and height of the A1 pulley luminal region were measured using ultrasonography.FINDINGS:
The cross-sectional area of the A1 pulley luminal region increased with step-wise increases in the flexor digitorum profundus traction. On average, the cross-sectional area and height of the A1 pulley luminal region showed increases of 31.4% and 43.6%, respectively, compared to the unloaded condition.INTERPRETATION:
These results confirmed that A1 pulley stretching increases the cross-sectional area of the A1 pulley luminal region. A1 pulley stretching has the potential to reduce the severity of trigger finger in patients facing surgery.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tendons
/
Traction
/
Trigger Finger Disorder
/
Mechanical Phenomena
/
Fingers
Type of study:
Diagnostic_studies
Limits:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Clin Biomech (Bristol, Avon)
Journal subject:
ENGENHARIA BIOMEDICA
/
FISIOLOGIA
Year:
2020
Document type:
Article