[Sagittal mobility study on the first tarsometatarsal joint in hallux valgus patients and its clinical values].
OBJECTIVE
To study sagittal mobility about the FTJ (first tarsometatarsal joint) and its relationship with the pathophysiology and treatment of hallux valgus patients.


METHODS
According to Lee's method, FTJ sagittal mobility of 300 normal feet and 200 hallux valgus was measured, and its correlative factors were statistically analysed.


RESULTS
FTJ sagittal mobility of 300 normal feet was 8.4 degrees +/- 2.3 degrees , and that of 200 hallux valgus was 11.7 degrees +/- 3.2 degrees , the difference was significant. The normal range of FTJ sagittal mobility was less than 13 degrees . The sagittal overmotion of FTJ had relation to the anatomical configuration of FTJ (P < 0.05), intercuneiform splitting (P < 0.01), transferred pain under the second metatarsal head (P < 0.01), and FTJ osteoarthritis (P < 0.01) had no relation to HVA (hallux valgus angle), IMA (intermetatarsal angle), second metatarsus medial diaphyseal cortex hypertrophy (P > 0.05).


CONCLUSIONS
Lee's method is convenient and accurate. Both HVA and IMA can not represent the sagittal mobility measurement of FTJ, which should be routinely evaluated, especially for hallux valgus patients with type I FTJ. Lapidus procedure should be considered for patients with larger FTJ in combination with transferred pain under the second metatarsal head, intercuneiform splitting, FTJ osteoarthritis.
Gui
Jian-Chao
JC
Department of Orthopaedics, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China. guijianchao@yahoo.com
Gu
Xiang-Jie
XJ
Wang
Li-Ming
LM
Shen
Hai-Qi
HQ
Yu
Zhong
Z
Ma
Xin
X
Chen
Jin-Song
JS
Wang
Xu
X
Huang
He
H
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006215:Hallux Valgus / Q000175:diagnosis* / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008683:Metatarsophalangeal Joint / Q000502:physiology* / Q000601:surgery; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods; D016059:Range of Motion, Articular