Fig. 2

Tenderness distribution in the C and F groups and abnormal signs in the C group. a Thirty-three and 8 patients had tenderness in the C and F group, respectively. No significant difference was detected in the LJ (P = 1.000),LANJ (P = 0.653), BA (P = 0.702) and TA (P = 0.663) of the two groups. A Fisher’s exact test was used in statistical analysis. LJ: lower joint. LANJ: lower limb area of non-joint. BA: back area. TA: thoracic area. b The first four abnormal signs recorded in the C group were PST (28.8%), ML (23.1%), RMS (21.2%), and WG (13.5%). WG: waddling gait. ML: mobility limitation. RMS: reduced muscle strength. MA: muscle atrophy. PE: paresthesia. ATR: abnormal tendon reflex. PST: positive orthopedic special test. PS: pathological sign