Normal Radiographic Values of the Forefoot in the Thai Women Population
Suriyapong Saowaprut MD*, Anuchart Lalitwongchai MD*, Sasipong Rohitopakarn MD*
Affiliation : *Arthroscopic and Sports Medicine Unit, Institute of Orthopaedics, Lerdsin Hospital, Bangkok, Thailand
Background : Diseases of the forefeet are common problems in orthopedics. Evaluation of forefoot radiogra- phy
has played an important role to determine the forefoot deformity. Previous studies have shown that normal
radiographic values of the western population were different from the Asian population values.
Objective : To examine the normal range of radiologic values of forefoot in Thai women
Material and method: The data collected at out-patient division of the hospital for screening 100 women (200
feet). All patients have been radiographed in the AP standing position (to measure the HVA, 1st IMA, DMAA,
sesamoid AP and 1st metatarsal length) and weight bearing tangential view to determine the SRA angle.
Results : The average results of the right and the left foot HVA = 10.75 degrees, 9.39 degrees/1st IMA = 10.24
degrees, 9.20 degrees/ DMAA = 3.72 degrees, 3.32 degrees/ sesamoid AP grade 0 -1 = 85 percent, 82 percent/
SRA = 9.14 degrees, 8 degrees respectively, 1st metatarsal length was shorter than the 2nd metatarsal length
in most cases (70%) and when comparing between the right and the left foot, no statistical significant
difference were found (p > 0.05).
Conclusion : Study found that the values of HVA, DMAA and the 1st metatarsal length in Thai women were less
than the values found in the foreign literatures but it was similar to the Asian population figures.
Keywords : Forefoot radiography, Forefoot radiography in Thai women, Hallux valgus
