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Relative ratios of collagen composition of periarticular tissue of joints of the upper limb.

Cheah A, Harris A, Le W, Huang Y, Yao J. Relative ratios of collagen composition of periarticular tissue of joints of the upper limb. The Journal of hand surgery, European volume. 2017 Jul 1; 42(6):616-620.

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We investigated the relative ratios of collagen composition of periarticular tissue of the elbow, wrist, metacarpophalangeal, proximal and distal interphalangeal joints. Periarticulat tissue, which we defined as the ligaments, palmar plate and capsule, was harvested from ten fresh-frozen cadaveric upper limbs, yielding 50 samples. The mean paired differences (95% confidence interval) of the relative ratios of collagen between the five different joints were estimated using mRNA expression of collagen in the periarticular tissue. We found that the relative collagen composition of the elbow was not significantly different to that of the proximal interphalangeal joint, nor between the proximal interphalangeal joint and distal interphalangeal joint, whereas the differences in collagen composition between all the other paired comparisons of the joints had confidence intervals that did not include zero.

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