Review Question - QID 220

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Hip Arthroscopy Complications Neurovascular injury QID: 220 (OBQ06.209)

QID 220 (Type "220" in App Search)

During hip arthroscopy, the sciatic nerve is most at risk with which of the following portal techniques?

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Anterior peritrochanteric portal with limb in internal rotation

29/3537

Anterior peritrochanteric portal with limb in flexion

25/3537

Posterior peritrochanteric portal with limb in internal rotation

50%

1767/3537

Posterior peritrochanteric portal with limb in external rotation

48%

1684/3537

Distal lateral portal with limb in neutral rotation

9/3537

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The posterolateral portal is made 2-3cm posterior to the tip of the greater trochanter. The hip should never be externally rotated during this portal entry as this brings the sciatic nerve closer to the portal. Internal rotation would move the portal farther away from the sciatic nerve- this concept is similar to internally rotating during a posterior approach to the hip for a total hip arthroplasty.

McCarthy presents a review of hip arthroscopy basic priniciples.