Tendon versus Pyrocarbon Interpositional Arthroplasty in the Treatment of Trapeziometacarpal Osteoarthritis

Table 1

Patient demographics.

Variables	Group L	Group P	P value∗
	(n = 19)	(n = 20)
Age (years)	58.9 (SD 6.4)	63.3 (SD 8.4)	0.091
Male / Female (n)	0 / 19	1 / 19	1.000
Dominant / Non-dominant (n)	5 / 14	9 /11	0.378
Symptom duration (months)	59.4 (SD 10.9)	57.0 (SD 14.0)	0.671
VAS pain score	6.5 (SD 1.6)	5.9 (SD 1.9)	0.130
Grip strength (kg)	20.3 (SD 6.0)	23.2 (SD 10.6)	0.253
Pinch strength (kg)	6.7 (SD 1.7)	6.6 (SD 2.6)	0.819
Kapanji score	7.7 (SD 1.4)	7.7 (SD 0.9)	0.953
DASH score	47.4 (SD 11.9)	55.6 (SD 20.5)	0.220
Follow-up period (months)	40.6 (SD 21.2)	35.2 (SD 15.2)	0.475

Continuous variables are reported as the mean (standard deviation). Group L = trapezium excision with ligament reconstruction and tendon interposition (LRTI); Group P = PyroDisk interpositional arthroplasty. ∗P values were computed from Student’s t-test or the Wilcoxon rank-sum test for continuous variables and Pearson’s chi-squared test or Fisher’s exact test for categorical variables. VAS, visual analog scale; DASH, disabilities of arm, shoulder, and hand.