Research Article

Preoperative Risk Factors of Persistent Pain following Total Knee Arthroplasty

Table 2

Comparative analysis of preoperative parameters (in brackets range and standard deviation where applicable). kgf: kilogram-force.

Group AGroup B

Age (yrs)NS
Female76%77%NS
Male24%23%NS
Hypertension62%69,8%NS
Circulatory diseases28,6%25,6%NS
Diabetes mellitus14,3%21%NS
Hypothyroidism14,3%14%NS
Epilepsy0%2,3%NS
VAS7 (4,5-9,5)7 (3-10)NS
WOMAC57 (33-80)58 (9-83)NS
KOOS pain44,0 (19,0-67,0)42,0 (14,0-86,0)NS
KOOS other symptoms39,0 (18,0-75,0)36,0 (4,0-100,0)NS
KOOS activities of daily life41,0 (9,0-72,0)40,0 (12,0-90,0)NS
KOOS quality of lifeNS
Ahlback grade3 (1-5)2 (1-5)NS
PPTs knee (kgf)2,1 (1,0-5,5)2,5 (1,0-10,0)NS
PPTs forearm (kgf)3,2 (1,0-8,0)3,2 (1,5-7,2)NS
Flexion (°)NS
Flexion contracture (°)10 (0-20)10 (0-30)NS
Pain duration (mo.)36 (12-180)72 (24-180)0,011294