Hawkins and Bokor graded intstability of the glenohumeral joint. The authors are from St. Joseph's Hospital in London, Canada.
Parameters:
(1) humeral head relative to the rim of the glenoid under passive stress
(2) reduction of humeral head on removal of stress
Humeral Head Relative to Rim of the Glenoid
Reduction on Removal of Stress
Grade of Instability
small amount of translation
NA
0
head rides up the slope of the glenoid but does not go over the rim
I
head rides up and over the glenoid rim
reduces
II
does not reduce (remains dislocated)
III
The higher the grade of the instability the more severe it is.
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Specialty: Surgery, orthopedic
ICD-10: ,