Kruczynski J
Department of Orthopedics, Academy of Medicine, Poznan, Poland.
Acta Orthop Scand. 1995 Jun;66(3):239-44. doi: 10.3109/17453679508995532.
36 children (61 hips) who had nonoperative treatment of developmental hip dislocation with the Frejka pillow and developed avascular necrosis were followed-up for an average of 20 (17-26) years. The radiographic pattern of necrosis was classified into 5 types. At final follow-up after completion of growth, the radiographic outcome was excellent in 11 hips, good in 21, fair in 19, and poor in 10 hips. There was a close correlation between the pattern of necrosis and the outcome: all the poor results were observed in cases with changes also involving the metaphysis.
36名采用Frejka枕非手术治疗发育性髋关节脱位并发生股骨头缺血性坏死的儿童（61髋），平均随访20（17 - 26）年。坏死的影像学表现分为5型。在生长发育完成后的最终随访中，11髋的影像学结果为优，21髋为良,19髋为中，10髋为差。坏死类型与结果之间存在密切相关性：所有差的结果均见于同时累及干骺端的病例。
