Reconstruction of three-dimensional models of knee joint using CT image post-processing technique: evaluation of bone tunnel difference after anterior cruciate ligament reconstruction using three-dimensional computed tomography

doi:10.3969/j.issn.2095-4344.2015.40.001

Abstract

Abstract:

BACKGROUND: Studies have shown that factors affecting the outcomes of anterior cruciate ligament reconstruction mainly depend on the position of bone tunnels. However, there still exists certain controversy over the researches on the position of bone tunnels.

OBJECTIVE: To investigate the clinical value of three-dimensional computed tomography on postoperative evaluation of bone tunnel after anterior cruciate ligament reconstruction under arthroscopic assistance.

METHODS: Fifty-eight patients with anterior cruciate ligament injury who received the treatment from January 2014 to August 2014 underwent anterior cruciate ligament reconstruction under arthroscopic assistance. The femoral end was fixed using an Endobutton, and tibial end was fixed using absorbable interference screws. 58 knees from patients were scanned respectively by means of a dual-source CT scanner. A three-dimensional model of knee was rebuilt on a CT image post-processing workstation to reproduce the medial wall of the lateral femoral condyle and reconstruct single-bundle anterior cruciate ligament, tibial plateau and bone tunnel. The cases that had a Lysholm score ≥ 80 points were included in the excellent and good group and those who had a Lysholm score < 80 points in the poor group. The relative position of the center point of the femoral and tibial bone tunnels were marked and measured and the position relation between the two center points was estimated.

RESULTS AND CONCLUSION: Three-dimensional computed tomography reconstruction method clearlyreflected the situation of bone tunnel and its entrance, fixtures and grafts after anterior cruciate ligament reconstruction. There was significant difference in the center point of femoral tunnel of the knee on the operated side between excellent and good group and poor group (P < 0.05). There was significant difference in the center point of the tibial tunnel between these two groups (P > 0.05). These results confirm that three-dimensional computed tomography can help to clearly reconstruct the images of bone tunnel and anterior cruciate ligament grafts after operation, which can be used clinically to assess the relationship between bone tunnel location and graft misshaping.

中国组织工程研究杂志出版内容重点：肾移植；肝移植；移植；心脏移植；组织移植；皮肤移植；皮瓣移植；血管移植；器官移植；组织工程

Key words: Tissue Engineering, Anterior Cruciate Ligament, Arthroscopes, Transplantation

CLC Number:

R318

Gao Guan-qi, Zhang Ke-yuan. Reconstruction of three-dimensional models of knee joint using CT image post-processing technique: evaluation of bone tunnel difference after anterior cruciate ligament reconstruction using three-dimensional computed tomography [J]. Chinese Journal of Tissue Engineering Research, 2015, 19(40): 6397-6401.

Figures/Tables 2

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