Analysis Of Related Factors Of The Meniscal Subluxation In16-30Years Old Patients With Knee Injuries

PurposeTo observe the magnetic resonance imagings(MRIs) characteristics of meniscalsubluxationin16-30years old patients with knee injuries. The relationship betweenthe meniscal subluxationand the several related factors of knee local environmentwere analyzed, which may contribute to provide evidences for the prevention of theoccurrence or development of knee osteoarthritis.MethodsThere were64cases of patients who underwent arthroscopic knee surgery, including30cases of male patients,34cases of female patients.The MRIs of all patients weremeasured and used to assess the incidence of meniscal subluxation in two groups ofpatients.Whether knee effusion, meniscus injuries, anterior cruciate ligament ruptureare the risk factors for meniscal subluxation by analysising MRIs combined with kneearthroscopic examination.All statisticaldata are operated by using computer.Categorical data are analyzed withChi-square test by Statistical Analysis Software(SAS).Results(1)There are respectively14cases and15cases of meniscal subluxation in30casesof male patients and34cases of female patients,accounted for46.67%and44.12%,respectively(P=0.84).(2)The incidences of medial and lateral meniscal subluxation are respectively8casesand6cases in male patients(P=0.54);the incidences of left and right knee meniscalsubluxation are respectively5cases and9cases in male patients(P=0.61).In addition,the incidences of medial and lateral meniscal subluxation are respectively7cases and8cases in female patients(P=0.77);the incidences of left and right knee meniscalsubluxation are respectively11cases and4cases in female patients(P=0.48).(3)There are16cases of meniscal subluxation in26cases of patients with kneeeffusion.There are13cases of meniscal subluxation in38cases of patients with noknee effusion(P=0.03).(4)There are6cases of meniscal subluxation in20cases of patients with longitudinaltear of meniscus.There are23cases of meniscal subluxation in44cases of patientswith no longitudinal tear of meniscus(P=0.10).(5)There are17cases of meniscal subluxation in19cases of patients with radial tearof meniscus.There are12cases of meniscal subluxation in45cases of patients withno radial tear of meniscus(P=0.00). (6)There are16cases of meniscal subluxation in28cases of patients with anteriorcruciate ligament rupture.There are13cases of meniscal subluxation in36cases ofpatients with no anterior cruciate ligament rupture(P=0.09).Conclusion(1) The overall incidences, medial or lateral incidences, left or right knee incidencesof men or women are not significant difference between meniscal subluxation of maleand female patients with the age from16to30.(2) According to the statistical analysis of the effect of the several related factors ofknee onmeniscal subluxation in16-30years old patients with knee injuries, the kneeeffusion and meniscal radial tear may be the risk factors of meniscal subluxation, andit shows that there may be no significant effect of the meniscal longitudinal tear andanterior cruciate ligament rupture on meniscal subluxation.