[논문]Oblique Single-Cut Rotation Osteotomy for Correction of Femoral Varus-Torsional Deformities in 3D-Reconstructed Canine Bone Models

Kim, Hyeon-Ho; Roh, Yoon-Ho; Lee, Je-Hun; Jeong, Jae-Min; Jeong, Seong Mok; Lee, Hae Beom

doi:10.17555/jvc.2020.08.37.4.180

Oblique Single-Cut Rotation Osteotomy for Correction of Femoral Varus-Torsional Deformities in 3D-Reconstructed Canine Bone Models 원문보기

Journal of veterinary clinics = 한국임상수의학회지, v.37 no.4, 2020년, pp.180 - 184

Kim, Hyeon-Ho (College of Veterinary Medicine, Chungnam National University) , Roh, Yoon-Ho (College of Veterinary Medicine, Chungnam National University) , Lee, Je-Hun (College of Veterinary Medicine, Chungnam National University) , Jeong, Jae-Min (College of Veterinary Medicine, Chungnam National University) , Jeong, Seong Mok (College of Veterinary Medicine, Chungnam National University) , Lee, Hae Beom (College of Veterinary Medicine, Chungnam National University)

Abstract ▼ AI-Helper

The purpose of this study was to report the reliability and validity of oblique single-cut rotation osteotomy (OSCRO) in 3D-reconstructed canine bone models with femoral varus and torsional deformities. A healthy adult male beagle was recruited to create a 3D bone model, and this bone model was modified by using a 3D program. Fifteen bone models were constructed for this study. OSCRO simulation was performed in accordance with the plan after printing using a 3D printing machine. The anatomical lateral distal femoral angle (aLDFA), anteversion angle (AA), anatomical caudo-distal femoral angle (aCdDFA), mechanical caudo-distal femoral angle (mCdDFA) and pre- and postoperative bone length were calculated. There were no significant differences between the target values and postoperative values. In addition, the difference between pre- and postoperative bone length was small (p = 0.001). Our findings suggest that OSCRO could be an effective surgical option for MPL with bone deformities in small-breed dogs that often undergo conventional distal femoral osteotomy.

주제어

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문제 정의

The purpose of this study was to describe the possibilities, advantages and disadvantages of the application of OSCRO in 3D-reconstructed canine bone models to correct MPL with bone deformities.

제안 방법

In this study, all bone models were constructed by the 3D model. There were 15 bone models with different aLDFAs and torsion.
In the case of OSCRO for the correction of MPL a steep osteotomy line should be modified proximally because of the osteotomy direction towards anatomical structures such as the sesamoid bone, the femoral condyle and the insertion of the gastrocnemius muscle. In this study, the osteotomy line was modified upward in 3 models. However, translation did not occur prominently (Fig 5F).
The limitations of this study include the lack of consideration of soft tissue since it focused on bone malformation by using 3D models. Therefore, it could be difficult to reduce the bone segments perioperatively due to the tension of soft tissue.
The varus deformities were modified at 5-degree intervals (aLDFA: 100°, 105°, and 110°), and torsional deformities were also modified at 5-degree intervals (anteversion angle: 0, 5°, 10°, 15°, and 20°) (Fig 1).

데이터처리

The difference between the target angle and postoperative angle (aLDFA and AA) was statistically evaluated with the independent samples t-test. The difference between the pre- and postoperative angles (aCdDFA and mCdDFA) was statistically evaluated with the paired t-test. The difference between the pre- and postoperative length was statistically evaluated with the Wilcoxon signed rank test.
The difference between the pre- and postoperative angles (aCdDFA and mCdDFA) was statistically evaluated with the paired t-test. The difference between the pre- and postoperative length was statistically evaluated with the Wilcoxon signed rank test.
The normality of the data was tested with the Kolmogorov-Smirnov and Shapiro-Wilk tests. The difference between the target angle and postoperative angle (aLDFA and AA) was statistically evaluated with the independent samples t-test. The difference between the pre- and postoperative angles (aCdDFA and mCdDFA) was statistically evaluated with the paired t-test.

이론/모형

Each outcome measured was expressed as the mean ± SD. The normality of the data was tested with the Kolmogorov-Smirnov and Shapiro-Wilk tests. The difference between the target angle and postoperative angle (aLDFA and AA) was statistically evaluated with the independent samples t-test.

성능/효과

There was no significant difference in accuracy between the plan and the postoperative results. The results of our study suggest that OSCRO is unlikely to affect unintended deformities; therefore, OSCRO might be an appropriate technique to correct severe MPL with bone deformities in the femur. Based on the ex vivo characteristics of this study, the application of these results to clinical cases seems promising.
This study showed that OSCRO had great accuracy for the correction of angulation-torsion of the femur without any unintended deformities. There was no significant difference in accuracy between the plan and the postoperative results.

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Oblique Single-Cut Rotation Osteotomy for Correction of Femoral Varus-Torsional Deformities in 3D-Reconstructed Canine Bone Models 원문보기

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Oblique Single-Cut Rotation Osteotomy for Correction of Femoral Varus-Torsional Deformities in 3D-Reconstructed Canine Bone Models 원문보기

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