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Orthopaedic Proceedings
Vol. 103-B, Issue SUPP_6 | Pages 51 - 51
1 May 2021
Abood AA Petruskevicius J Vogt B Frommer A Rödl R Rölfing JD
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Introduction

Intraoperative assessment of coronal alignment is important when performing corrective osteotomies around the knee and ankle, limb lengthening and trauma surgery. The Joint Angle Tool (JAT) provides surgeons with information about the anatomic and mechanical axes intraoperatively based on true anteroposterior radiographs.

Aim: Presentation of the JAT, a low-cost goniometer for intraoperative assessment of the lower limb alignment.

Materials and Methods

The JAT consists of pre-printed joint orientation angles of the anatomic and mechanical axis including normal variations on a plastic sheet. It is placed on the screen of the image intensifier after obtaining a true anterior-posterior image. The pre-printed joint orientation angles can intraoperatively assist the surgeons in achieving the pre-planned axis correction. Here, its feasibility is demonstrated in four cases.