Internal Fixation of Intertrochanteric Hip Fractures: A Clinical Comparison of Two Implant Designs

Table 1

Main demographic and clinical data of the fractures by treatment group.

	PFNA	Reverse LISS	𝑃 value
	(𝑛=10)	(𝑛=9)
Type 31-A1 fractures (𝑛=19)
Mean age (yr.)	80.1±6.4	80.3±8.1	0.945
Sex
Male	6	2	0.096
Female	4	7
Preoperative walking ability
Independent walking	10	9
Assisted walking	0	0
Bedridden	0	0
Mean duration from injury to surgery (day)	6.80±3.3	6.11±3.6	0.666
Mean duration of surgery (min.)	61.0±9.4	87.2±11.5	0.000
Mean fluoroscopy time (sec.)	109±52.9	180±70.8	0.024
Mean blood loss (mL)	210±87.6	233±82.9	0.560
Open reduction cases	0	0
Quality of reduction
Good	10	8	0.279
Acceptable	0	1
Poor	0	0
Mean time of hospital stay (day)	18.6±3.1	21.3±9.3	0.438
Mean time to bone healing (wk.)	17.4±3.4	20.6±3.2	0.054
Postoperative walking ability
Independent walking	8	8
Assisted walking	2	1
Bedridden	0	0
Harris hip score (pt.)	83.6±5.8	85.2±6.4	0.568
	PFNA	Reverse LISS	𝑃 value
	(𝑛=21)	(𝑛=21)
Type 31-A2 fractures (𝑛=42)
Mean age (yr.)	82.5±7.9	80.7±8.1	0.469
Sex
Male	5	11	0.057
Female	16	10
Preoperative walking ability
Independent walking	17	19
Assisted walking	3	2
Bedridden	1	0
Mean duration from injury to surgery (day)	6.57±3.5	6.71±4.8	0.912
Mean duration of surgery (min.)	65.5±13.2	92.6±17.1	0.000
Mean fluoroscopy time (sec.)	153±59.7	202±91.1	0.050
Mean blood loss (mL)	231±100.6	248±152.9	0.679
Open reduction cases	2	3
Quality of reduction
Good	19	20	0.549
Acceptable	2	1
Poor	0	0
Mean time of hospital stay (day)	19.5±5.2	19.8±6.0	0.847
Mean time to bone healing (wk.)	22.2±3.6	23.1±4.3	0.440
Postoperative walking ability
Independent walking	17	14
Assisted walking	3	6
Bedridden	1	1
Harris hip score (pt.)	81.4±10.0	78.1±12.6	0.353
	PFNA	Reverse LISS	𝑃 value
	(𝑛=14)	(𝑛=12)
Type 31-A3 fractures (𝑛=26)
Mean age (yr.)	77.4±6.3	77.2±6.4	0.917
Sex
Male	5	4	0.899
Female	9	8
Preoperative walking ability
Independent walking	14	12
Assisted walking	0	0
Bedridden	0	0
Mean duration from injury to surgery (day)	4.50±2.1	5.17±2.2	0.430
Mean duration of surgery (min.)	73.2±15.4	97.5±18.4	0.001
Mean fluoroscopy time (sec.)	142±72.3	199±88.9	0.084
Mean blood loss (mL)	236±111.7	238±98.0	0.966
Open reduction cases	1	1
Quality of reduction
Good	12	11	0.636
Acceptable	2	1
Poor	0	0
Mean time of hospital stay (day)	16.6±1.95	20.2±3.86	0.005
Mean time to bone healing (wk.)	22.0±4.31	24.8±3.07	0.070
Postoperative walking ability
Independent walking	12	12
Assisted walking	1	0
Bedridden	1	0
Harris hip score (pt.)	84.1±11.3	86.2±5.64	0.563
	PFNA	Reverse LISS	𝑃 value
	(𝑛=45)	(𝑛=42)
All the fractures (𝑛=87)
Mean age (yr.)	80.4±7.3	79.6±7.6	0.627
Sex
Male	16	17	0.636
Female	29	25
Preoperative walking ability
Independent walking	41	40
Assisted walking	3	2
Bedridden	1	0
Mean duration from injury to surgery (day)	5.98±3.2	6.14±3.9	0.828
Mean duration of surgery (min.)	66.9±13.7	92.9±16.5	0.000
Mean fluoroscopy time (sec.)	140±63.5	196±85.0	0.001
Mean blood loss (mL)	228±100	242±124	0.565
Open reduction cases	3	4
Quality of reduction
Good	41	40	0.765
Acceptable	4	2
Poor	0	0
Mean time of hospital stay (day)	18.4±4.1	20.3±6.3	0.101
Mean time to bone healing (wk.)	21.1±4.2	23.1±4.0	0.025
Postoperative walking ability
Independent walking	37	34
Assisted walking	6	7
Bedridden	2	1
Harris hip score (pt.)	82.8±9.5	82.0±10.4	0.717
Postoperative complications (cases)	4 (9%)	5 (12%)
Pressure sore	1	2
Urinary infection	1	2
Pulmonary infection	1	1
Deep venous thrombosis	1	0
Death (cases)	4 (9%)	3 (7%)