Is traumatic meniscal lesion associated with acute fracture morphology changes of tibia plateau? A series of arthroscopic analysis of 67 patients

Table 1 Characteristics of tibial plateau fractures according to Schatzker and the Association for Osteosynthesis/Orthopedic Trauma Association

Fracture type	Characteristics	Number
	Side, left /right	33/34
	Sex, male/female	30/37
Unicondylar fracture	Lateral split fracture	3
	Lateral split and depression fracture	16
	Lateral depression fracture	12
	Medial plateau fracture	11
Bicondylar fracture	bicondylar split fracture	13
	bicondylar with diaphyseal fracture	12
AO/OTA	B1	5
	B2	18
	B3	11
	C1	8
	C2	12
	C3	13

AO/OTA: Association for Osteosynthesis/Orthopedic Trauma Association.

Table 2 Meniscus physiopathology according to unicondylar and bicondylar tibial plateau fractures

Meniscus physiopathology	Unicondylar TPF, n = 42, incidence	Bicondylar TPF, n = 25, incidence	P value
Lateral	16 (38.9%)	7 (28.0%)	0.4
Medial	1 (2.4%)	2 (8.0%)	0.28
Combined	3 (7.1%)	1 (4.0%)	0.57
Location
Anterior horner	4 (9.5%)	2 (8.0%)	0.83
Mid body	11 (26.2%)	7 (28.0%)	0.87
Posterior horner	8 (19.0%)	2 (8.0%)	0.22
Zone
White-white	16 (38.9%)	5 (20.0%)	0.12
Red-white	7 (16.7%)	1 (4.0%)	0.12
Red-red	0	5 (20.0%)	0.01
Tear pattern
Oblique tear, parrot beak	13(31.0%)	5 (20.0%)	0.32
Longitude tear, bucket handle	0	4 (16.0%)	0.01
Radical tear, transverse	1 (2.4%)	0	0.44
Complex tear	5 (11.9%)	1 (4.0%)	0.27

Horizontal cleavage tears were not seen in both groups. Complex tear means two or more tear patterns or lateral combined simultaneous medical tears. TPF: Tibial plateau fracture.

Table 3 Odds ratio with 95% confidence interval and receiver operating characteristic area associated traumatic meniscal lesions in different groups

Fracture group	Variable	OR	95%CI	ROC area	P value
Unicondylar TPF	FWP	0.95	0.68 -2.54	0.58	0.36
	FSD	2.53	1.02-6.28	0.69	0.03
	FLD	0.42	0.65-1.14	0.44	0.52
	PTS	1.10	0.73-1.27	0.49	0.95
	ARFA	0.07	0.00-0.19	0.71	0.02
Bicondylar TPF	FWP	2.30	1.02-5.65	0.77	0.03
	FSD	2.95	1.07-6.66	0.76	0.03
	FLD	1.15	0.79-1.32	0.52	0.86
	PTS	1.40	0.96-3.66	0.81	0.01
	ARFA	0.13	0.00-0.27	0.51	0.93
Total TPF	FWP	1.51	0.69-1.84	0.63	0.07
	FSD	2.31	1.26-5.63	0.73	0.00
	FLD	0.62	0.59-1.01	0.47	0.73
	PTS	1.18	0.90-1.42	0.59	0.18
	ARFA	0.11	0.01-0.22	0.62	0.09

ARFA: Area ratio of fracture area; FLD: Fracture line distance; FSD: Fragment subsiding distance; FWP: Fragment width of plateau; PTS: Posterior tibial slope; TPF: Tibial plateau fracture.