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Fig. 2 | Journal of Orthopaedic Surgery and Research

Fig. 2

From: Predominance of synovial sensory nerve fibers in arthrofibrosis following total knee arthroplasty compared to osteoarthritis of the knee

Fig. 2

Density of sympathetic tyrosine hydroxylase-positive (TH+) and sensory substance P-positive (SP+) nerve fibers in synovial tissue of three different recesses of the knee in patients with osteoarthritis (OA) and arthrofibrosis (AF). a Density of sympathetic nerve fibers. b Density of sensory nerve fibers. A circular symbol is the mean value of 17 investigated high-power fields of one patient. Box plots give the 10th, 75th, 50th (median), 25th, and 10th percentiles. n.s. not significant

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