Kitagawa Takashi, Nakase Junsuke, Takata Yasushi, Shimozaki Kengo, Asai Kazuki, Tsuchiya Hiroyuki
Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan.
Department of Rehabilitation, Japanese Red Cross Kanazawa Hospital, Kanazawa, Japan.
J Med Ultrason (2001). 2019 Jan;46(1):147-151. doi: 10.1007/s10396-018-0917-7. Epub 2018 Nov 19.
There has been no specific study on the quantitative morphological changes that occur in the infrapatellar fat pad (IPFP) after anterior cruciate ligament (ACL) reconstruction. We used ultrasonography to evaluate the dynamics of the IPFP in knees after ACL reconstruction using the contralateral knees as controls.
We enrolled 31 patients 3 months after they underwent ACL reconstruction. The thickness of the superficial part of the IPFP was measured using longitudinally oriented ultrasound images of the anterior part of both knees at 90° and 10° flexion. We then used these data to calculate the ratio of the change in thickness.
At 90° knee flexion, the superficial part of the IPFP was significantly thinner in the reconstructed knees (9.3 ± 3.4 mm) than in the contralateral knees (11.8 ± 4.6 mm). The thickness change ratio was significantly smaller in the reconstructed knees (188.6 ± 64.7%) than in the contralateral knees (249.7 ± 73.8%).
When assessed 3 months after ACL reconstruction, the thickness of the superficial part of the IPFP at 90° knee flexion and the thickness change ratio of the IPFP were both significantly lower in the reconstructed knees than in the contralateral knees.
目前尚无关于前交叉韧带（ACL）重建术后髌下脂肪垫（IPFP）发生的定量形态学变化的具体研究。我们使用超声检查，以对侧膝关节作为对照，评估ACL重建术后膝关节中IPFP的动态变化。
我们纳入了31例在接受ACL重建术后3个月的患者。使用双膝关节前部在90°和10°屈曲时的纵向超声图像测量IPFP浅层部分的厚度。然后我们利用这些数据计算厚度变化率。
在膝关节屈曲90°时，重建膝关节中IPFP的浅层部分（9.3±3.4毫米）明显比侧膝关节（11.8±4.6毫米）更薄。重建膝关节的厚度变化率（188.6±64.7%）明显低于对侧膝关节（249.7±73.8%）。
在ACL重建术后3个月进行评估时，重建膝关节在膝关节屈曲90°时IPFP浅层部分的厚度以及IPFP的厚度变化率均明显低于对侧膝关节。
