Conclusion: There is significant weakness of the hip abductor and external rotator
muscles, but no alteration in lower extremity kinematics in subjects with PFPS.
An internal rotation moment has been observed during the push phase of the propulsion cycle, which would indicate a need for external rotator
Focus on the hip adductor, abductor, flexor and external rotator
The purpose of this study was to investigate the relationship between internal rotation of the knee and muscle activity from internal and external rotator
muscles, and between internal rotation of the knee and externally applied loads on the knee during landing in collegiate basketball players.
This opposition allows the external rotator
muscles to be actively engaged at the top of the thigh.
Due to the musculature involved in the specific skills, we believe that every baseball player should be exposed to the following exercises: rotary torso, internal rotator cuff, external rotator
cuff, posterior deltoid, pullover, and wrist curls.
The dangers are in low back complaints, external rotator
tendinitis at the hip, and problems of the patella, foot, and ankle associated with forced pronation (rolling in at the arch).
Shortening of these muscles is one explanation for postsurgical external rotator
cuff weakness in patients with a functioning deltoid.
The plot of external rotator
moment arms in the results section demonstrates that throughout external rotation, the lateralized humerus design improves the moment arm for the external rotators
more than the other design options.
The shoulder block paralyses the external rotators
and abductors of the joint, so it rests happily in external rotation in a sling.
Significant emphasis in both preventative conditioning and rehabilitation strength and conditioning programs is placed on the posterior rotator cuff (external rotators
) since the external rotators
undergo tremendous eccentric contraction and overload during the deceleration phase of the service motion (Ellenbecker et al.
Thus, the posterior augmented baseplate when used with posterior wear achieved the most lateral humeral position in this computer model, resulting in greater muscle tensioning of the internal and external rotators