Impact of Active Ankle Movement Frequency on Velocity of Lower Limb Venous Flow following Total Hip Arthroplasty

Table 1

Patient demographics.

Variable	Value
Gender
Female	27
Male	2
Age (years)	(37–87)
Height (cm)	(137–170)
Weight (kg)	(45.8–74.4)
Body mass index	(17.6–33.7)
Diagnosis
Osteoarthritis of the hip	28
Osteonecrosis of the femoral head	1
Affected side
Right	9
Left	20
Preoperative plantar flexion angle (degree)	(30–45)
Preoperative dorsiflexion angle (degree)	(10–20)
Patient-based evaluation for hip joint disease (point)	(10–69)
Duration of operation (minute)	(37–165)
Intraoperative blood loss (milliliter)	(200–1700)
Lengthening of lower legs (millimeter)	(0.3–22.6)

Values are expressed as means standard deviation, with ranges in parentheses.
The score was evaluated using the Japanese Orthopaedic Association hip disease evaluation questionnaire [9].