J Korean Foot Ankle Soc.  2012 Jun;16(2):101-107.

Radiological Analysis of Osteoarthritis of the Second Metatarsophlangeal and Tarsometatarsal Joint

• Kim JR
• Kim SY
• Lee WC

Abstract

PURPOSE
The aim of this study was to investigate the radiological characteristics of the osteoarthritis of the second metatarsophalangeal (MTP) and tarsometatarsal (TMT) joint.
MATERIALS AND METHODS
Between January 2002 and August 2010, 27 patients (33 feet) who had second metatarsal osteoarthritis (OA) were reviewed retrospectively. Group 1 was 14 patients (17 feet) with second MTP joint OA. Group 2 was 13 patients (16 feet) with second TMT joint OA. Group 3 was 24 patients (25 feet) had hallux valgus without second metatarsal (MT) OA as control. Weight bearing foot anteroposterior (AP) and lateral view were checked, and measured hallux valgus angle, metatarsus adductus angle (MAA), second MT functional length, first and second MT length by Hardy & Clapham method on AP view, angle of second MT with horizontal plane, calcaneal pitch, talo-first MT on lateral view.
RESULTS
On weight bearing foot AP view, second MT functional length of group 1, 2, 3 was 2.4 mm, -0.1 mm, 0.7 mm and MAA of group 1, 2, 3 was 17.7degrees, 17.7degrees, 14.5degrees. Second MT functional length of group 1 was longer than control group and it was statistically significant. MAA was significant different between group 1-3 and group 2-3. Angle of second MT with horizontal plane of group 2 was smaller than control group and it was statistically significant. Other radiographic parameters have no statistical significance.
CONCLUSION
Group 1 has long functional length of second MT and group 2 has small angle of second MT with horizontal plane.

Keyword

MTP joint; TMT joint; OA; Functional length

MeSH Terms

Foot
Hallux Valgus
Humans
Joints
Metatarsal Bones
Metatarsus
Osteoarthritis
Retrospective Studies
Weight-Bearing