Øye C R, Foss O A, Holen K J
Department of Orthopaedic Surgery, Trondheim University -Hospital, Trondheim, Norway.
Faculty of Medicine and Health Sciences, Department of -Neuromedicine and Movement Science (INB), Norwegian University of Science and Technology, Trondheim, Norway.
J Child Orthop. 2018 Jun 1;12(3):245-250. doi: 10.1302/1863-2548.12.180026.
The aetiology of femoral trochlear dysplasia is unknown. The aim of this prospective cohort study was to describe trochlear development in a newborn population during the first six years of life.
In an earlier study, the femoral trochlea was examined by ultrasound in 174 newborns. A dysplastic trochlea was defined with a sulcus angle (SA) above 159°. Two groups were defined, one group of 15 knees with SA > 159° (dysplastic group), and one group of 101 knees with SA < 159° (non-dysplastic group). In the present follow-up study, the children were further examined at six, 18 and 72 months.
There was a statistically significant difference in the SA between the dysplastic and the non-dysplastic group at all follow-ups (p < 0.001). A small but statistically significant change in the SA between 0 to 72 months was detected for the dysplastic knees (p = 0.032) and for the controls (p < 0.001).
Only minor changes in the anatomy of the femoral trochlea from newborn to age six years were found. A dysplastic trochlea at birth remains shallow and the anatomy does not change from normal to dysplastic during the same time span.
II.
股骨滑车发育不良的病因尚不清楚。这项前瞻性队列研究的目的是描述新生儿人群在生命最初六年中的滑车发育情况。
在一项早期研究中，对174名新生儿的股骨滑车进行了超声检查。发育不良的滑车定义为沟角（SA）大于159°。定义了两组，一组为15个膝关节，SA>159°（发育不良组），另一组为101个膝关节，SA<159°（非发育不良组）。在本次随访研究中，对儿童在6个月、18个月和72个月时进行了进一步检查。
在所有随访中，发育不良组和非发育不良组之间的SA存在统计学显著差异（p<0.001）。发育不良膝关节（p = 0.032）和对照组（p<0.001）在0至72个月之间的SA有微小但具有统计学意义的变化。
从新生儿到6岁，仅发现股骨滑车解剖结构有微小变化。出生时发育不良的滑车仍然很浅，并且在同一时间段内解剖结构不会从正常变为发育不良。
II级。
