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Legg-Calve-Perthes Áúȯ¿¡¼­ ´ëÅð°ñµÎÀÇ ±«»çÁ¤µµÀÇ ÃøÁ¤ : Catterall ºÐ·ù¹ý°ú MRI¸¦ ÀÌ¿ëÇÑ ºÎÇÇÃøÁ¤ºÐ·ùÀÇ ºñ±³ Measurement of Necrotic Portion in Legg-Calve-Perthes Disease : Comparison of MRI Volume Measurement Method and Catterall Classification

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Á¤À絿/Jae Dong Chung ³ªÀç¹ü/Á¤Èñ¿µ/¹ÚÀϼø/À¯ÁøÁ¾/Á¤¼ºÈÆ/¼ÛÇØ·æ/Jae Boem Na/Hee Young Jung/Il Soon Park/Jin Jong Yoo/Sung Hoon Chung/Hae Ryong Song

Abstract

¸ñ Àû : Legg-Calve-Perches (LCP) ÁúȯÀÇ ´ëÅð°ñµÎÀÇ ±«»çÁ¤µµ ÃøÁ¤À» À§ÇÏ¿© MRI ¿µ
»óÀ» ÀÌ¿ëÇÑ ÀÔüÀûÀÎ ºÎÇÇÃøÁ¤¹ýÀ» ½ÃÇàÇÏ¿´À¸¸ç, ÀÌ ¹æ¹ýÀ¸·Î ÃøÁ¤ÇÑ °á°ú¿Í ´Ü¼ø ÃÔ¿µ
¿µ»óÀ» ÀÌ¿ëÇÑ Catterall ºÐ·ù¸¦ ºñ±³ÇÏ¿© MRI¸¦ ÀÌ¿ëÇÑ »õ·Î¿î ±«»çÁ¤µµÀÇ Æò°¡¸¦ Á¦½ÃÇÏ
·Á ÇÑ´Ù.
´ë»ó ¹× ¹æ¹ý : 1995³â 2¿ùºÎÅÍ 1996³â 8¿ù±îÁö LCP ÁúȯÀ¸·Î Áø´Ü ¹ÞÀº ȯÀÚ 41¸íÁß ´ë
Åð °ñµÎ°¡ ¿ÏÀüÈ÷ ÇãÅ»(collapse)µÈ ȯÀÚ¸¦ Á¦¿ÜÇÑ 27¸íÀÇ 28°í°üÀýÀ» ´ë»óÀ¸·Î ÇÏ¿´´Ù.
CatterallºÐ·ù¹ýÀ» ±âÁØÀ¸·Î ´Ü¼øÃÔ¿µÀ» ÀÌ¿ëÇÏ¿© ´ëÅð°ñµÎÀÇ ¸éÀû¿¡ ´ëÇÑ ´ëÅð°ñµÎÀÇ ÇãÅ»
Á¤µµ¿Í °íÀ½¿µÀ¸·Î ³ªÅ¸³ª´Â ±«»çºÎÀ§ÀÇ Á÷°æÀ» Á¾ÇÕÇÑ ±«»çºÎÀ§ÀÇ ¸éÀûÀÇ ºñ¸¦ ±âÁØÀ¸·Î
0-25%¸¦ Grade 1, 25%-50%´Â Grade ¥±, 50%-75%´Â Grade ¥², 75%-100%¸¦ Grade ¥³·Î
Á¤ÇÏ¿´´Ù. MRI¸¦ ÀÌ¿ëÇÑ ºÎÇÇÃøÁ¤¹ýÀº 1mm¸ð´«Á¾À̸¦ ÀÌ¿ëÇÏ¿© º´º¯ÀÇ ´Ü¸éÀûÀ» ±¸ÇÑ °ª
¿¡ ¿µ»ó ÀýÆí µÎ²²¸¦ °öÇÑ ÈÄ ¸ðµç ¿µ»ó¿¡¼­ ¹Ýº¹ÇÏ¿© ¾òÀº °ªÀ» ÇÕÇÏ¿© ºÎÇǸ¦ °è»êÇÏ¿´
´Ù. MRI ºÎÇÇ ÃøÁ¤¹æ¹ýµµ Catterall ºÐ·ù¿Í °°ÀÌ ±«»çÁ¤µµ¸¦ 4 Grade·Î ºÐ·ùÇÏ¿´´Ù. ´Ü¼øÃÔ
¿µÀ» ÀÌ¿ëÇÑ Catterall ºÐ·ù¹ý°ú MRI¸¦ ÀÌ¿ëÇÑ ºÎÇÇÃøÁ¤ ºÐ·ù¿¡ ÀÇÇÑ ±«»çÁ¤µµ¸¦ ±¸ÇÑ ÈÄ
¼­·Î ºñ±³ÇÏ¿´´Ù.
°á °ú : ´Ü¼øÃÔ¿µÀ» ÀÌ¿ëÇÑ Catterall ºÐ·ù¿Í MRI¸¦ ÀÌ¿ëÇÑ ºÎÇÇÃøÁ¤¹æ¹ýÀ» ºñ±³ÇÏ¿´À» ¶§
ÃÑ 28°üÀý Áß 24°üÀý(85.7%)¿¡¼­ ±«»çÁ¤µµ°¡ º¯ÇÏ¿´´Ù. ´Ü¼øÃÔ¿µÀ» ÀÌ¿ëÇÑ Catterall ºÐ·ù°¡
MRI¸¦ ÀÌ¿ëÇÑ ºÎÇÇÃøÁ¤¹æ¹ýº¸´Ù ±«»çÁ¤µµ°¡ ³ô°Ô ³ª¿Â °æ¿ì°¡ 18°üÀý(64.3%)À̾úÀ¸¸ç, ±«
»çÁ¤µµ°¡ ³·°Ô ³ª¿Â °æ¿ì°¡ 6°üÀý(21.4%)À̾ú´Ù.
°á ·Ð : ´Ü¼øÃÔ¿µÀ» ÀÌ¿ëÇÑ Catterall ºÐ·ù¿¡ ÀÇÇÑ ±«»çÁ¤µµ´Â MRI¸¦ ÀÌ¿ëÇÑ ºÎÇÇÃøÁ¤¹ýÀÇ
±«»çÁ¤µµ¿Í »ó´çÇÑ Â÷À̸¦ º¸¿´´Ù. ±×·¯¹Ç·Î ´Ü¼øÃÔ¿µ¿¡ ºñÇØ ¿ùµîÇÑ Çػ󵵸¦ °¡Áö°í ±«»ç
ºÎÀ§¿¡ ´ëÇÑ 3Â÷¿øÀûÀÎ Çؼ®ÀÌ °¡´ÉÇÑ MRI¸¦ ÀÌ¿ëÇÑ ´ëÅð°ñµÎ ±«»çºÎÀ§ÀÇ ºÐ·ù°¡ ÀçÁ¤¸³
µÇ¾î¾ß ÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.

Purpose : The purpose of this study was to evaluate the extent of necrosis of the
femoral head in Legg-Calve-Perthes(LCP) disease. This involved the use of MRI,
followed by volume measurement and the use of the Catterall clasification system :the
difference between the grade obtained using each of these approaches was then
determined.
Materials and Methods : We retrospectively reviewed 28 hip-joint MR images on which
a diagnosis of LCP disease had been based. According to the necrotic portion of femoral
head, and on the basis of the catterall classification, LCP was graded 1 to 4, as follows
:Grade I= 0-<25% : ¥±=25-<50% : ¥²= 50-<75% : ¥³=75-100%. Using a transparent
paper on which 1mm squares had been drawn, the necrotic area of each MR image was
measured : the following equation was then used to calculate the volume of the necrotic
portion :volume=necretic area x slice theckness. On the basis of this measurement, each
femoral head was graded and the results were compared with those obtained using the
Catterall classification.
Results : In 24 joints(85.7%), grades according to the Catterall classification and MRI
volume measurement were not the same. As compared with the volume measurement
method, use of the Catterall classification led to grade overestimation in 18 joints
(64.3%) and underestimation in six (21.4%).
Conclusion : The grade according to the Catterall classification was different from that
obtained using the volume measurement method. This study thus indicates the need for
a new system of classifying LCP disease based on the volume measurement method and
using MR imaging.(J Korean Radiol Soc 1998: 38:339-344)

Å°¿öµå

Femur; necrosis; Children; skeletal system; Hip; MRI; Hip; necrosis;

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