分析比较急性髌骨外侧脱位与膝关节多发韧带损伤后内侧髌股韧带损伤的特点

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Abstract Objective To explore and compare the characteristics of injuries of the medial patellofemoral ligament (MPFL) between acute lateral patellar dislocation (LPD) and multiligament knee injuries (MLKIs). Methods The MRI data on 92 cases of acute LPD and 83 cases of MLKIs was retrospectively analyzed. The concomitant injury degrees and locations of MPFL related to the LPD and MLKIs were statistically analyzed. Results There were 20 cases of partial MPFL tear, 25 cases of complete tear and five cases of no injury among the 50 adolescents in the LPD subgroup. Nine cases of partial MPFL tear, six cases of complete tear and 19 cases of no injury were identified among the 34 adolescents in the MLKIs subgroup. The incidence of MPFL tear in the adolescent LPD subgroup was significantly higher than that of the adolescent MLKIs subgroup (P<0.05). MPFL injuries occurred at the isolated patellar insertion (PAT) in 19 cases, at the isolated femoral attachment (FEM) in 14 cases, at the isolated mid-substance (MID) in two cases, and more than one site of injury (COM) was identified in 10 cases in the adolescent LPD subgroup. MPFL injuries occurred at the PAT in three cases, at the FEM in seven cases and COM in five cases in the adolescent MLKIs subgroup. The incidence of MPFL tear at the PAT, FEM and COM in the adolescent LPD subgroup was significantly higher than that of the adolescent MLKIs subgroup (all P<0.01). Seventeen cases of partial MPFL tear, 19 cases of complete tear and six cases of no injury were identified among the 42 adults in the LPD subgroup, compared with 13, 7 and 29 among the 49 adults in the MLKIs subgroup. The adult LPD subgroup showed significantly higher incidence of MPFL tear than the adult MLKIs subgroup (χ²=20.771,P<0.05). MPFL injuries occurred at the PAT in 11 cases, FEM in 15 cases, MID in two cases and COM in eight cases in the adult LPD subgroup, but at the PAT in four cases, FEM in nine cases and COM in seven cases in the adult MLKIs subgroup. The adult LPD subgroup showed significantly higher incidence of MPFL tear at the PAT, FEM and COM than the adult MLKIs subgroup (χ²=14.773,12.777,6.822,all P<0.01). Conclusions Acute LPD is more likely to cause MPFL tear than MLKIs, including partial tear, complete tear, isolated femoral-sided tear, isolated patellar-sided tear and combined tear.

Key words： knee patellar dislocation wound and injury magnetic resonance imaging

Received: 14 January 2021

ZTFLH:	R873.4
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	ZHENG Lei
	DU Jiquan
	ZHU Lingling
	FENG Yan
	MA Xuemei
	REN Gang
	SUN Baisheng
	JIAO Jian

Cite this article:

ZHENG Lei,DU Jiquan,ZHU Lingling等. A comparison of characteristics of medial patellofemoral ligament injuries in acute lateral patellar dislocation and multiligament knee injuries[J]. Med. J. Chin. Peop. Armed Poli. Forc., 2021, 32(7): 568-572.

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http://journal08.magtechjournal.com/Jwk_wjyx/EN/ OR http://journal08.magtechjournal.com/Jwk_wjyx/EN/Y2021/V32/I7/568

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