Impingement-free external rotation
is reported to increase with more humeral retroversion and impingement-free internal rotation is reported to increase with less humeral retroversion.
The degree of humeral torsion an individual displays has been shown to be associated with the total range of external rotation
as well as the propensity for anterior dislocation (Crockett et al.
However, little is known about the relative contribution of scapular position on the range-of-motion of shoulder external rotation
At heel contact on the prosthetic limb, amputees activate the gluteal and hamstring muscles to extend their hip, which coincides with generation of an external rotation
moment along the long axis of the fully extended lower limb.
2,25,26,32-34,41,44) Because of this increased thickness, LG designs may also be a better solution for medially eroded glenoids as they move the joint line more laterally to better restore its native position, potentially improving joint stability and postoperative internal and external rotation
to quantify muscle length during abduction and internal and external rotation
using a standard and 8[degrees] posterior augmented reverse shoulder (Equinoxe[R], Exactech, Inc.
In combination with a maximal pelvis and trunk external rotation
angle of about 80-90[degrees] (Figure 3E, F and 5B) participants in our study were able to transfer more energy from the trunk to the throwing arm (Stodden et al.
The glenoid track describes the width of the contact zone between the humeral head and glenoid at various degrees of abduction and external rotation
He recommends building strength in your legs and hips, countering excessive external rotation
front turnout by working on internal rotation, and focusing on your alignment.
7-13) For example, baseball pitchers typically demonstrate increased external rotation
and decreased internal rotation in their throwing arm compared to the contralateral shoulder.
It is hypothesized that concomitant subscapularis repair will increase the deltoid force required for abduction, the posterior rotator cuff required for external rotation
, and the overall joint reaction force with rTSA.
It demonstrated that patients treated through the external rotation
protocol experienced significantly reduced recurrence rates of anterior shoulder dislocations.