Gertzbein and Robbins classification

Last revised by Kieran Kusel on 12 Feb 2021

Citation, DOI, disclosures and article data

Citation:

Neubauer J, Kusel K, Knipe H, et al. Gertzbein and Robbins classification. Reference article, Radiopaedia.org (Accessed on 18 Apr 2024) https://doi.org/10.53347/rID-82155

DOI:

https://doi.org/10.53347/rID-82155

Permalink:

https://radiopaedia.org/articles/82155

rID:

82155

Article created:

26 Oct 2020, Jakob Neubauer

Disclosures:

At the time the article was created Jakob Neubauer had no recorded disclosures.

View Jakob Neubauer's current disclosures

Last revised:

12 Feb 2021, Kieran Kusel ◉

Disclosures:

At the time the article was last revised Kieran Kusel had no recorded disclosures.

View Kieran Kusel's current disclosures

Revisions:

6 times, by 4 contributors - see full revision history and disclosures

Systems:

Musculoskeletal, Spine

Sections:

Classifications

Tags:

intrapedicular screw; transpedicular screw; spondylodesis

Synonyms:

Gertzbein and Robbins classification of transpedicularly inserted screws

The Gertzbein and Robbins classification assesses the position of transpedicular screws.

Classification

Transpedicular screw position is graded from A to E based on the extent by which the screw breaches the cortex of the pedicle ^1-3:

A: fully intrapedicular position without breach of the pedicle cortex
B: exceeding the pedicle cortex <2 mm
C: exceeding the pedicle cortex 2-4 mm
D: exceeding the pedicle cortex 4-6 mm
E: exceeding the pedicle cortex >6 mm or is outside of the pedicle

Grade A and B can be a considered satisfactory operation result ³. In grade C to E, neurological symptoms may occur and can be evaluated as an unsatisfactory surgical result ^1,3.