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Open Packed Position
The open packed position of the GH joint is around 50 degrees of abduction with slight horizontal adduction and external rotation. However, the point of maximal capsular laxity has been found to be 39 degrees of abduction in the scapular plane, which suggests that the open packed position may be close to neutral position of the shoulder.
This position allow the capsule to rest with minimal stress on those tissues. It’s usually used for post surgical patients to allow maximal healing ~ 4-6 wks depending on the sx.