Which abduction angle is within the recommended SCR tension-graft position?

Which abduction angle is within the recommended SCR tension-graft position?

• A. 10-20 degrees
• B. 20-30 degrees
• C. 30-40 degrees
• D. 0-10 degrees

Answer: (B)

Tensioning the SCR graft at a moderate amount of shoulder abduction places the graft under the right amount of tension to mimic the native superior capsule’s restraint. This position provides stability by resisting superior translation of the humeral head during early elevation, while still allowing near-normal range of motion. If the arm is held with almost no abduction, the graft is too lax and won’t effectively prevent superior migration. If it’s held in too much abduction, the graft becomes over-tensioned, risking restricted motion or graft failure. The middle, moderate abduction position thus offers the best balance, which is why it’s considered the correct tensioning angle.

Tensioning the SCR graft at a moderate amount of shoulder abduction places the graft under the right amount of tension to mimic the native superior capsule’s restraint. This position provides stability by resisting superior translation of the humeral head during early elevation, while still allowing near-normal range of motion. If the arm is held with almost no abduction, the graft is too lax and won’t effectively prevent superior migration. If it’s held in too much abduction, the graft becomes over-tensioned, risking restricted motion or graft failure. The middle, moderate abduction position thus offers the best balance, which is why it’s considered the correct tensioning angle.