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Knee Surgery, Sports Traumatology, Arthroscopy

Published in:

01-04-2015 | Knee

Intercondylar notch size influences cyclops formation after anterior cruciate ligament reconstruction

Authors: Masataka Fujii, Takayuki Furumatsu, Shinichi Miyazawa, Yukimasa Okada, Takaaki Tanaka, Toshifumi Ozaki, Nobuhiro Abe

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 4/2015

Abstract

Purpose

The purpose of this study was to investigate the incidence of cyclops lesions and its relationship with the cross-sectional area of the intercondylar notch.

Methods

For this study, 55 patients (24 male and 31 female) underwent follow-up arthroscopy after bi-socket anterior cruciate ligament reconstruction with hamstring tendon grafts were included. All patients underwent magnetic resonance imaging measurements of intercondylar notch dimensions. We compared the femoral intercondylar notch sizes and bone tunnel sizes between knees with cyclops lesions (cyclops group) and those without cyclops lesions (no-cyclops group). The mean percentage of the tunnel size to the cross-sectional area of the femoral intercondylar notch was also compared between the groups. The median follow-up duration was 3.8 years.

Results

Cyclops lesions were found in 15 of the 55 knees (27.3 %) on second-look arthroscopy (cyclops group). Only 6 of the 55 knees (10.9 %) had extension loss (cyclops syndrome). The cyclops group included 3 men and 12 women. The two groups showed a statistical difference in sex variation (P = 0.04). No significant differences were found in the femoral and tibial tunnel sizes between the two groups. The cross-sectional area of the femoral intercondylar notch was significantly smaller in the cyclops group (251.7 ± 63.2 mm²) than in the no-cyclops group (335.6 ± 77.6 mm²) (P < 0.001). The percentage of the total femoral tunnel size to the cross-sectional area of the femoral intercondylar notch was significantly higher in the cyclops group (18.6 ± 5.3 %) than in the no-cyclops group (13.2 ± 3.6 %) (P = 0.02).

Conclusions

A smaller intercondylar notch size may be a potential risk factor for cyclops lesion formation.

Level of evidence

Case–control study, Level IV.

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Title: Intercondylar notch size influences cyclops formation after anterior cruciate ligament reconstruction
Authors: Masataka Fujii
Takayuki Furumatsu
Shinichi Miyazawa
Yukimasa Okada
Takaaki Tanaka
Toshifumi Ozaki
Nobuhiro Abe
Publication date: 01-04-2015
Publisher: Springer Berlin Heidelberg
Published in: Knee Surgery, Sports Traumatology, Arthroscopy / Issue 4/2015
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI: https://doi.org/10.1007/s00167-014-2891-y

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Intercondylar notch size influences cyclops formation after anterior cruciate ligament reconstruction

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

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