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Abstract：
OBJECTIVE: To investigate the effects of early patellar dislocation on the tibial tubercle location.
METHODS: Sixty knees from 30 healthy 1-month-old New Zealand white rabbits were randomly divided into two groups of 30 knees each. Group A (control group) comprised the left knees, which underwent no surgical procedures. Group B comprised the right knees, which underwent patellar dislocation surgery. Computed tomography (flexion 0°) was performed preoperatively and 6 months post-operatively. Measurements included the tibial tuberosity-trochlear groove distance (TT-TG) and tibial tubercle lateralization.
RESULTS: No significant difference in the TT-TG or tibial tubercle lateralization was found between the two groups preoperatively. Six months post-operatively, however, the mean TT-TG in Group A (no patellar dislocation) and Group B (patellar dislocation) was 1.0 ± 0.4 and 3.0 ± 0.7 mm, respectively (p < 0.05). The mean tibial tubercle lateralization also showed a significant difference between Groups A and B at 6 months post-operatively (0.5 ± 0.1 and 0.6 ± 0.0, respectively; p < 0.05).
CONCLUSIONS: Early patellar dislocation can lead to tibial tubercle lateralization and an increased TT-TG. Clinically, early intervention for adolescent patients with patellar dislocation will be important.
METHODS: Prospective comparative study, Level II.
METHODS: Sixty knees from 30 healthy 1-month-old New Zealand white rabbits were randomly divided into two groups of 30 knees each. Group A (control group) comprised the left knees, which underwent no surgical procedures. Group B comprised the right knees, which underwent patellar dislocation surgery. Computed tomography (flexion 0°) was performed preoperatively and 6 months post-operatively. Measurements included the tibial tuberosity-trochlear groove distance (TT-TG) and tibial tubercle lateralization.
RESULTS: No significant difference in the TT-TG or tibial tubercle lateralization was found between the two groups preoperatively. Six months post-operatively, however, the mean TT-TG in Group A (no patellar dislocation) and Group B (patellar dislocation) was 1.0 ± 0.4 and 3.0 ± 0.7 mm, respectively (p < 0.05). The mean tibial tubercle lateralization also showed a significant difference between Groups A and B at 6 months post-operatively (0.5 ± 0.1 and 0.6 ± 0.0, respectively; p < 0.05).
CONCLUSIONS: Early patellar dislocation can lead to tibial tubercle lateralization and an increased TT-TG. Clinically, early intervention for adolescent patients with patellar dislocation will be important.
METHODS: Prospective comparative study, Level II.
摘要：
目的：探讨早期髌骨脱位对胫骨结节位置的影响。
方法：将30只健康1月龄新西兰大白兔随机分为两组，每组30只。A组（对照组）包括左膝，没有接受外科手术。B组包括右膝，接受髌骨脱位手术。术前和术后6个月进行计算机断层扫描（屈曲0°）。测量包括胫骨结节-滑车沟距离（TT-TG）和胫骨结节侧向化。
结果：两组术前TT-TG或胫骨结节侧化无显著差异。术后六个月,然而,A组（无髌骨脱位）和B组（髌骨脱位）的TT-TG平均为1.0±0.4和3.0±0.7mm，分别为(p<0.05)。术后6个月，A组和B组的平均胫骨结节偏侧化也显示出显着差异（分别为0.5±0.1和0.6±0.0；p<0.05）。
结论：早期髌骨脱位可导致胫骨结节偏侧化和TT-TG升高。临床上,对青少年髌骨脱位患者的早期干预至关重要。
方法：前瞻性比较研究，二级。
方法：将30只健康1月龄新西兰大白兔随机分为两组，每组30只。A组（对照组）包括左膝，没有接受外科手术。B组包括右膝，接受髌骨脱位手术。术前和术后6个月进行计算机断层扫描（屈曲0°）。测量包括胫骨结节-滑车沟距离（TT-TG）和胫骨结节侧向化。
结果：两组术前TT-TG或胫骨结节侧化无显著差异。术后六个月,然而,A组（无髌骨脱位）和B组（髌骨脱位）的TT-TG平均为1.0±0.4和3.0±0.7mm，分别为(p<0.05)。术后6个月，A组和B组的平均胫骨结节偏侧化也显示出显着差异（分别为0.5±0.1和0.6±0.0；p<0.05）。
结论：早期髌骨脱位可导致胫骨结节偏侧化和TT-TG升高。临床上,对青少年髌骨脱位患者的早期干预至关重要。
方法：前瞻性比较研究，二级。
