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Old 8th November 2007, 01:25 PM
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Default Re: Some new research on the rheumatoid foot

Flexor hallucis longus tendon rupture in RA-patients is associated with MTP 1 damage and pes planus.
Baan H, Drossaers-Bakker WK, Dubbeldam R, Buurke JJ, Nene A, van de Laar MA.
BMC Musculoskelet Disord. 2007 Nov 6;8(1):110 [Epub ahead of print]
BACKGROUND: To assess the relation between rupture of the Flexor hallucis longus (FHL) tendon and range of motion, deformities and joint damage of the forefoot in RA patients with foot complaints.

METHODS: Thirty RA patients with painful feet were assessed, their feet were examined clinically for the presence of pes planus and range of motion (ROM), radiographs were scored looking for the presence of forefoot damage, and ultrasound examination was performed, examining the presence of the FHL at the level of the medial malleolus. The correlation between the presence or absence of the FHL and ROM, forefoot damage and pes planus was calculated.

RESULTS: In 11/60(18%) of the feet, a rupture of the FHL was found. This was associated with a limited motion of the MTP1-joint, measured on the JAM (chi2 =10,4, p=0.034), a higher prevalence of pes planus (chi2 =5.77, p=0,016) and a higher prevalence of erosions proximal at the MTP-1 joint (chi2 =12.3, p=0,016.), and joint space narrowing of the MTP1 joint (chi2 =12.7, p=0,013).

CONCLUSIONS: Rupture of the flexor hallucis longus tendon in RA-patients is associated with limited range of hallux motion, more erosions and joint space narrowing of the MTP-1-joint, as well as with pes planus.
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