Why are patients still in hospital after fast-track, unilateral unicompartmental knee arthroplasty

Figures & data

Table 1. Patient demographics

Factor	n	mean (range)
Sex	Female	57
	Male	43
	Total	100
BMI		30 (21–53)
Age		67 (39–93)
ASA score	1–2	80
	3–4	20
Anaesthesia	General	11
	Spinal	89

Table 2. Reasons for not being discharged displayed as count and percentage of total amount of patients still hospitalized on day of surgery (DOS), postopertive day 1 (POD-1) and postopertive day 2 (POD-2)

	Not discharged on
	DOS	POD-1	POD-2
Reasons	n = 78	n = 22	n = 2
Lack of mobilization	63 (81)	15 (68)	1 (50
PONV	5 (6)	2 (9)	2 (100)
Circulatory insufficiency	1 (1)	0 (0)	0 (0)
Pain	15 (19)	11 (50)	0 (0)
Wound issues	2 (3)	4 (18)	1 (50)
Urinary retention	14 (18)	1 (5)	0 (0)

Table 3. Reasons for lack of mobilization displayed as count and percentage of total amount of patients lacking mobilization on day of surgery (DOS), postopertive day 1 (POD-1) and postopertive day 2 (POD-2)

	Not mobilized on
	DOS	POD-1	POD-2
Reasons	n = 63	n = 15	n = 2
Logistics	15 (24)	1 (7)	0 (0)
Motor blockade	28 (44)	0 (0)	0 (0)
PONV	4 (6)	0 (0)	1 (50)
Pain	12 (19)	9 (60)	0 (0)
Muscle weakness	3 (5)	2 (13)	0 (0)
Dizziness	1 (2)	3 (20)	0 (0)

Table 4. Possible improved discharge percentage on the day of surgery if the individual discharge criteria was managed successfully. Not DOS discharge are the number of patients failing to meet only that specific discharge criteria

	Not DOS discharge ^a n	Possible DOS discharge ^a^, b n (%)
Actual DOS discharge ^a	–	20 (27)
Cause of not DOS discharge
Lack of mobilization ^c	21	41 (55)
PONV	4	24 (32)
Circulatory insufficiency	0	20 (27)
Pain	10	30 (40)
Wound issues	0	20 (27)
Urinary retention	1	21 (28)

^a1st and 2nd patient on program.

^bPossible DOS discharge is the sum of Actual DOS discharge and

Not DOS discharge

^cPatients not mobilized due to pain or PONV were excluded from

lack of mobilization and included in pain and PONV, respectively.