Relationship between CTX-II and patient characteristics, patient-reported outcome, muscle strength, and rehabilitation in patients with a focal cartilage lesion of the knee: a prospective exploratory cohort study of 48 patients

Table 3 Correlations between CTX-II ^a and isokinetic muscle strength (IMS) at baseline, follow-up and change from baseline to follow-up

	Baseline CTX-II vs. baseline IMS (n = 48)		Follow-up CTX-II vs. follow-up IMS (n = 44)		Δ^bCTX-II vs. Δ^bIMS (n = 44)
	r^c	p^d	r^c	p^d	r^c	p^d
Quadriceps, injured limb	-0.297	0.040	-0.081	ns	-0.054	ns
Quadriceps, %^e	-0.299	0.039	0.069	ns	-0.012	ns
Hamstrings, injured limb	-0.176	ns	-0.045	ns	0.150	ns
Hamstrings, %^e	-0.148	ns	-0.003	ns	0.069	ns

^aLog transformed values; ^bΔ, change from baseline to follow-up; ^cr, Pearson correlation coefficient; ^dp, level of significance; ^e%, isokinetic muscle strength injured limb in percentage of isokinetic muscle strength uninjured limb; ns, not significant.

ISSN: 1471-2474