Glenoid retroversion is associated with a decreased force required to dislocate posteriorly.

Glenoid retroversion is associated with a decreased force required to dislocate posteriorly.

• A. True
• B. False
• C. Not Related
• D. Only in Athletes

Answer: (A)

Glenoid retroversion means the socket faces more posteriorly. That posterior orientation reduces the bony block against backward movement of the humeral head, so the head can translate posteriorly with less force before dislocation occurs. In other words, a glenoid that tilts backward lowers the amount of torque or force needed to cause a posterior dislocation, reflecting why retroversion is a known risk factor for posterior instability. This change in anatomy affects stability regardless of athletic status, so the statement isn’t limited to athletes or unrelated. The correct interpretation is that the statement is true.

Glenoid retroversion means the socket faces more posteriorly. That posterior orientation reduces the bony block against backward movement of the humeral head, so the head can translate posteriorly with less force before dislocation occurs. In other words, a glenoid that tilts backward lowers the amount of torque or force needed to cause a posterior dislocation, reflecting why retroversion is a known risk factor for posterior instability. This change in anatomy affects stability regardless of athletic status, so the statement isn’t limited to athletes or unrelated. The correct interpretation is that the statement is true.