Randsborg Per-Henrik, Banitalebi Hasan, Årøen Asbjørn, Straume-Næsheim Truls
Department of Orthopedic Surgery, Akershus University Hospital, 1478 Lørenskog, Norway.
Institute of Clinical Medicine, University of Oslo, 0424 Oslo, Norway.
Children (Basel). 2024 Apr 23;11(5):504. doi: 10.3390/children11050504.
Increased Tibial Tuberosity-Trochlear Groove (TT-TG) distance is a risk factor for recurrent lateral patella dislocations (RLPD). Population-based cross-sectional studies on healthy subjects demonstrate that the TT-TG increases gradually during growth until skeletal maturity, but changes in the TT-TG distance during adolescence in patients with RLPD on an individual basis have not been previously investigated. This study aimed to measure changes in TT-TG distance during skeletal maturity. The TT-TG of 13 consecutive patients with open physes (mean age 13 years) with RLPD was measured on MRI at baseline and three years later. The change in TT-TG distance over the three-year period was measured. The mean change in TT-TG distance from the baseline to the three-year follow-up increased overall (2.9 mm, 95% Confidence Interval (CI) 2.1-3.7). However, the TT-TG distance could either increase or decrease during final growth. Our results suggest that the TT-TG distance in patients suffering from RLPD may either decrease or increase individually during the growth spurt. This contradicts the current concept that the TT-TG distance increases gradually during growth.
胫骨结节-滑车沟（TT-TG）距离增加是复发性外侧髌骨脱位（RLPD）的一个风险因素。基于人群的健康受试者横断面研究表明，TT-TG在生长过程中会逐渐增加，直至骨骼成熟，但此前尚未对RLPD患者青春期期间TT-TG距离的个体变化进行过研究。本研究旨在测量骨骼成熟过程中TT-TG距离的变化。对13例连续的骨骺未闭（平均年龄13岁）的RLPD患者在基线时和三年后进行了MRI检查，测量其TT-TG。测量了三年期间TT-TG距离的变化。从基线到三年随访，TT-TG距离的平均变化总体上有所增加（2.9毫米，95%置信区间（CI）2.1-3.7）。然而，在最终生长期间，TT-TG距离可能增加或减少。我们的结果表明，患有RLPD的患者在生长突增期间TT-TG距离可能会个体性地减少或增加。这与目前认为TT-TG距离在生长过程中逐渐增加的观念相矛盾。
