2023 ISAKOS Biennial Congress ePoster
Evaluation of Femoral Tunnel Position Using 3DCT in Medial Patellofemoral Ligament Reconstruction
Kanako Izukashi, MD, Yokohama, Kanagawa JAPAN
Atsushi Sato, MD, PhD, Koto-Ku, Tokyo JAPAN
Naoki Okuma, MD, Yokohama, Kanagawa JAPAN
Masataka Ota, MD, Tokyo JAPAN
Jun Oike, MD,PhD, Koto, Tokyo JAPAN
Takayuki Okumo, MD, PhD, Tokyo, Tokyo JAPAN
Takayuki Koya, MD, PhD, Chicago, IL UNITED STATES
Fumiyoshi Kawashima, MD, Tokyo JAPAN
Hiroshi Takagi, MD, PhD, Tokyo JAPAN
Koji Kanzaki, Prof., Yokohama JAPAN
Fujigaoka hosp. Showa Univ., Yokohama, Kanagawa, JAPAN
FDA Status Not Applicable
Summary
The surgical technique, which combines using the medial epicondyle and the adductor tubercle as the reference points and to confirm Schottle ’s point by an image , was thought to create a bone tunnel at the anatomical attachment site of MPFL.
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Abstract
Purpose
In MPFL reconstruction, we create bone tunnel of femoral under fluoroscopy in addition to confirming anatomical landmarks. The purpose of this study is to examine the position of the bone tunnel of femoral in MPFL reconstruction performed at our hospital using 3DCT.
Methods
The subjects were 24 patients with 26 knees (6 males, 20 females) who underwent MPFL reconstruction between March 2016 and November 2021. The position of the femoral was determined by touching the medial epicondyle and the adductor tubercle, referring 5 to 10 mm posterior to the midpoint, and confirming Schottle's point under fluoroscopy. The analysis system was used to measure the position of the bone tunnel, and it was obtained according to the report by Okada et al.
Conclusion
The MPFL femoral attachment site is reported to be 9-10 mm proximal and 5-8 mm posterior to the medial epicondyle. Anatomical landmarks are referenced intraoperatively, but this alone does not facilitate localization. In this study, confirmation of Schottle's point under fluoroscopy was also used, and it was considered that a bone hole was created near the anatomical attachment.