[Observation on pathological changes of the medial aspect of the first metatarsal head of hallux valgus].
OBJECTIVE
To observe pathological characteristic of bone and soft tissue of the medial aspect of the first metatarsal head in order to investigate the pathogenesis of hallux valgus.


METHODS
One hundred and twenty-three patients with hallux valgus (235 feet) were obtained from August 2003 to December 2004 in our department. The bone and soft tissue of the medial aspect of the first metatarsal head were taken out from the incision. The pathological conditions of specimen were observed by HE stain.


RESULTS
The pathological changes included: degeneration and desmoplasia around the attachment point of tendon and joint capsule, reactive hyperplasia of periost, decreasing of bone trabecula, cartilaginification of periost, cortical bone and tendon insertion, bone formation and osteoclasts response.


CONCLUSIONS
The pathological changes of the medial aspect of the first metatarsal head of hallux valgus presented extensive chronic inflammation.
Wen
Jian-Min
JM
Department of Orthopaedics of Wangling Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China. wjm5734@263.net
Tong
Yun
Y
Han
Feng-Yue
FY
Sun
Yong-Sheng
YS
Sun
Wei-Dong
WD
Sang
Zhi-Cheng
ZC
Hu
Hai-Wei
HW
Lin
Xin-Xiao
XX
Wu
Xia-Bo
XB
Liang
Zhao
Z
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006215:Hallux Valgus / Q000473:pathology*; D006801:Humans; D008297:Male; D008682:Metatarsal Bones / Q000473:pathology*; D008875:Middle Aged