MRI baaracogo walasa ka gɛnɛgɛnɛ meniscus ni ligament joginw sɛgɛsɛgɛ;

Meniscus ye fiɲɛ ye min bɛ i n’a fɔ meniscus, ni a bɛ kɛ ni kɛrɛ saba ye, min bɛ sɔrɔ tibial condyle ni plateau cɛ, o bɛ kɔnɔbara basigilenw ka ɲɔgɔn sɔrɔli ɲɛ kosɛbɛ, wa a jɔyɔrɔ ka bon gɛnɛgɛnɛ kolotugudaw wulicogo la.

MRI sɔrɔcogo nɔgɔmanw ni a jugumanw .

Sagittal ni frontal ja kan, meniscus normal ye kɛrɛ saba ye hypointense kɔnɔ. Ja min bɛ sagittal lateral kosɛbɛ, meniscus ye 'bow-tie' structure ye min bɛ Kɛ ni cɛmancɛ-sagittal dakun ye min ni ɲɛfɛla ni kɔfɛla bɛ Kɛ (Jaa 1).

Jaa 1 MRI normal ye meniscus cɛmancɛ la. Proton density-weighted sagittal view: ɲɛfɛla ni kɔfɛla meniscal angles ye hypointense triangles homogènes ye. Meniscus bɛ i n’a fɔ bow ani a bɛ Kɛ cɛmancɛ-yɔrɔ dakunw ye minnu b’a ɲɛfɛla-kɔnɔw Jὲ a ɲɛfɛ n’a kɔkanna-kɔnɔw bɛ a kɔ fɛ.

Nafa b’a la ka farikolo-ɲɛnajɛ dɔw faamuya bawo u bɛ se ka meniscal split simulate:

• Sagittal dakun na, tɛmɛsira min bɛ transverse ni anterior ligaments cɛ;

• Popliteal tendon sheath;

• Humphrey ni Wrisberg ka meniscus-femoral ligament bɛ kɔfɛla meniscus kɔfɛla siri ni senkɔni cɛmancɛ la;

• Oblique meniscus ligament, min bɛ meniscus ɲɛfɛla ɲɛfɛla ni meniscus kɔfɛla kɔfɛla siri ɲɔgɔn na, o bɛ se ka meniscus walima barrel handle jiginni ladege.

• Discaïde meniscus ye meniscus deformité bangenen ye min man teli ka sɔrɔ. Nin meniscal dysplasia bɛ nɔ bila meniscus lateral dɔrɔn de la. A ka 'academic' sɛgɛsɛgɛli MRI kan, o bɛ tali kɛ ɲɛda ɲɛfɛla ni kɔfɛla ka tɛmɛsira ye ja sagittal kan a dɔgɔyalenba la, a janya ye milimɛtɛrɛ 5 ye ka tugu ɲɔgɔn na (Ja 2). O sɔrɔlenw bɛ ladilan ka kɛɲɛ ni yɔrɔ dɔw ye minnu bɛ kɛ.

Jaa 2 Diskodi lateral meniscus. Sagittal T1-weighted image. Tɛmɛsira ni kɔfɛ-yɔrɔw tɛmɛsira 3 5mm fixe sections tugu-tugu ɲɔgɔn na. Aw bɛ nin diskodɔn meniscus ɲɛfɛla ka myxoid tiɲɛni kɔlɔsi.

Meniscus banaw jateminɛcogo .

A ka ca a la, ka danfara don basigilen na meniscus traumatique ni meniscus degénerative cɛ. Joginni minnu bɛ mɔgɔ tɔɔrɔ, olu bɛ sɔrɔ fanga tɛmɛnen kɛli fɛ menisiki kɛnɛman na. Balikuw la, a ka ca a la, o fiɲɛ bɛ sɔrɔ valgus indirect indirect indirec la, o ye tibia kɔrɔtalen ye kɛnɛma jiginni kɔfɛ walima gɛnɛgɛnɛ wulilen kɔfɛ 20° flexion na. O nɔ na, ​​tiɲɛni bɛ sɔrɔ masin fanga nɔgɔmanw fɛ minnu bɛ baara kɛ meniscus kan min tiɲɛna ni myxoid degeneration interstitielle ye. Meniscal fissures horizontales bɛ se ka sɔrɔ u yɛrɛ ma walima u bɛ se ka sɔrɔ joginni misɛnniw fɛ.

danfara .

Ka kɛɲɛ ni cleavage plane sira ye, fissures bɛ se ka tila ka kɛ fissures horizontales ye, fissures verticals walima fissures complexes .

Fissure horizontale .

A bɛ ni plan split ye ​​min bɛ bɛn tibial plateau ma min bɛ meniscus tila ka kɛ segments sanfɛtaw ni duguma yɔrɔw ye. Nin joginda tilennenw bɛ jɛnsɛn yɔrɔ bɛɛ, u bɛ se ka nɔba bila menisiki cɛmancɛ walima kɛrɛfɛla la, wa u bɛ jate fɛn sabatilenw ye, hali ni nɔgɔ minnu bɛ wuli ka don jirisunw na, olu ɲɛfɔlen don kɔfɛ menisiki cɛmancɛ la.

Fissure vertical .

A bɛ jɔ tibial plan na ani meniscus lamini na. Olu ka teli ka nɔ bila meniscus cɛmancɛ la. Jogin dafalen bɛ jate ko a tɛ sabati, wa a bɛ menisiki tila cɛmancɛ ni kɛrɛfɛyɔrɔw la. Scanning level fana bɛ meniscus lateral farikolo la ani meniscus kɔfɛla la, o min sɛgɛsɛgɛli ka nɔgɔn i n’a fɔ barili bolo ɲɛji, o bɛ kɛ ka caya ni gɛnɛgɛnɛ joli bɛ wuli kɛnɛma. Ni u farala ja sagittal kan, barili bololanɛgɛ ɲɛji bɛ se ka bɔ kɛnɛ kan (Jaa 3).

A. Coronal MRI, bɛlɛkisɛ bɛ a ɲɛsin kɔfɛla meniscus kɔfɛla ma, o min ka nɔgɔn ka sɛgɛsɛgɛli kɛ cogo jugu la i n’a fɔ barili mansin crack; B. Ni aw bɛ MRI sɛgɛsɛgɛli kɛ ka kɛɲɛ ni jɔyɔrɔ ye min jiralen bɛ ja in na, o bɛ kɛ ni jiribolo ye min bɛ kɛ ni fɛn ye min bɛ kɛ ka ɲɛ.

Radial fissures bɛ jɔ meniscus lamini na wa a ka ca a la a bɛ nɔ bila meniscus hɔrɔnma da la.

Parrot Beak Tear .

ye tiɲɛni jɔlen ɲagaminen ye min bɛ kɛ ni yɔrɔ janyalen ye ani yɔrɔ radiyali ye min bɛ taa ni a ye hɔrɔnya da la.

A laban na, joli-sira-funu-kɔnɔ-jogin gɛlɛnw bɛ yen, k’a sɔrɔ ɲɛfɔli jɛlen ma kɛ, min bɛ kɛ ni fiɲɛ caman ye minnu bɛ kɛ ɲɔgɔn kɔ ani minnu bɛ jɔ.

MRI jiracogo meniscus jogin .

Meniscus ɲɛjibɔ .

Stoller et al. Meniscus hakɛ 3 sugandilenw (Jaa 4) .

Kalanso 1 : hypertensité nodular meniscus min bɛ to meniscus surface kan;

Kalanso 2nan : Meniscus lineaire lineaire (meniscus lineaire lineaire) min bɛ to meniscus (meniscus) kan;

Kalanso 3nan : Ɲɛgɛnɛsiraw ka teli ka caya fo ka se menisiki ka jolisiraw ma.

Jaa 4 Stoller ka sɛgɛsɛgɛli. A: Kalansen 1 : Nodu jiginni cɛmancɛ kelen walima caman cɛmancɛ la, o bɛ sɔrɔ menisiki ka joli-sira-funu-yɔrɔ la; B: Kalanso 2nan : Cɛmancɛlafanga cɛmancɛlafasali (hyperintensité linéaire) meniscus (meniscus) joli yɔrɔ la; C: Grade 3: Linear intermediate hypertensity min bɛ taa fo ka se meniscus ka joli-sira-funu-yɔrɔ ma.

Hali ni danfara min bɛ jateden 2 ni 3 cɛ, o ye fɛn fitinin ye, a bɛ farikolo-ɲɛnajɛ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-yɔrɔ-la-banaw (Ja 5) danfara-yɔrɔ-ko-ɲɛnabɔli (Jaa 5) danfara Bɔ. O danfara min bɛ menisiki tiɲɛnen ni a tigɛlen cɛ, o tɛ tilennen ye tuma bɛɛ, wa fili sɔrɔyɔrɔ caman bɛ yen k’a sababu kɛ fɛn wɛrɛw bɔli ye walima minnu tununna.

Jaa 5. Meniscus ka tiɲɛni cogoya. Sagittal proton density view ni fat saturation. Siginiden caman bɛ se ka ye k’a sɔrɔ ja tiɲɛnen si tɛ yen.

Fɛɛrɛ minnu tigɛra:

MRI ka baara kɛcogo ka ɲi, a ka teli ka kɛ 90% ni 95% cɛ. MRI kan, meniscal cleft bɛ ye i n’a fɔ hypointense linear linear extension ka taa meniscus articulairew dɔ la kelen na (toller grade 3), walima a cogoya jugu saniyalen.

Ni ɲɛji bɛ ye dɔrɔn slikɛli kelen kan, gɛlɛya dɔw bɛ yen, kɛrɛnkɛrɛnnenya la, faratiba bɛ sɔrɔ a la ka nɔ ɲuman sɔrɔ. Ni hypertensité dans le meniscus lineaire bɛ nɔba bila meniscal surface la, o kɔrɔ ye ko a bɛ se ka kɛ yɔrɔ fila la minnu bɛ a kɛrɛfɛ, a ka ɲi ka jate bana ye. Nin hakilina in ka kan ka ladilan ka kɛɲɛ ni ja sɔrɔcogo ye min bɛ kɛ (3 ka se 4 mm ma walima ka 3D hakɛ sɔrɔ ni isotropi MM yɔrɔw ye).

Radial meniscal clefts ka gɛlɛn tuma dɔw la ka tɛmɛ u sɔrɔli kan, ka da u ɲɛsincogo kan. Olu bɛ Nà ni cogoya-ko-baliya ye kosɛbɛ:

• free edge interruption or amputation kan ɲɛda ja kan;

• Meniscus bowtie yecogo min bɛ kɛ ka ɲɛ walima min tigɛra ja sagittal kan (Jaa 6);

Jaa 6. FISSURE RADIAL MENIISCUS cɛmancɛ ɲɛfɛla yɔrɔ la sagittal proton density-weighted view kɔnɔ. Meniscus truncated bow tie (arrow).

• a tununnen walima 'Ghost' meniscus ni gap radial intact.

Meniscus ka kari ni bulon bolo ye, o bɛ 10% ɲɔgɔn gɛlɛya spondylolisthesis janya la. O cogo la, MRI ka teli ka kɛ 70% ɲɔgɔn ye, ka kɛɲɛ ni sɛgɛsɛgɛli kɛcogo ye min bɛ kɛ.

MRI sɔrɔli minnu ka kan ka jateminɛ:

Sɔrɔ min ka ca kosɛbɛ, o ye fɛnw yecogo tilennen ye minnu bɛ wuli ka taa ɲɛgɛnw ni ɲɔgɔn cɛ: 'Fɛɛrɛ fila-fila-kurunba (Pcl)' taamasiyɛn ye taamasiyɛn ye ni cɛmancɛ menisiki tiɲɛna ani ni cɛmancɛ-kurunba ɲɛfɛla bɛ tiɲɛ. Segment dislocée bɛ ye i n’a fɔ arcuate hypointense band parallel to the normal posterior cruciate ligament, product a 'double pcl' yecogo (Ja 7). Rake buruw caya kojugu (a bonya bɛ tɛmɛ milimɛtɛrɛ 6 kan) fana bɛ se ka barikalan dɔ sɔrɔli jira (Jaa 8). O cogo la, meniscus yɔrɔ min bɛ bɔ a la, o bɛ nɔrɔ kɛnɛyaji kɛnɛman na.

Jaa 7 Meniscus bolokɔni cɛmancɛ cogoya bɛ ni 'double PCL' taamasiyɛn ye. Sagittal PD-weighted view with fat suppression: Meniscus fragment dislocée (arrow) bɛ PCL normal (kɛlɛ) jukɔrɔ ani a bɛ kɛ 'double pcl' yecogo la.

Jaa 8 Fɛn min bɛ kɛ ka ɲɛsin ɲɛfɛla belebeleba ma. Sagittal proton density weighted view. A yɔrɔ min bɛ kɛ ka ɲɛ (arrow) o bɛ nɔrɔ meniscus angle (arrow) ɲɛfɛla la (arrow). A kɔlɔsi ko kɔfɛ-kɔnɔw ma jira (*).

MRI ka sɔrɔ wɛrɛw:

MRI taamasiɲɛ wɛrɛw tiɲɛna, i n’a fɔ bow tie tununnen, meniscus taamasiyɛn inverted, walima meniscal fragments (meniscal fragments) minnu bɛ wuli ka taa u bila yɔrɔ la min bɛ wele ko intercondylar region (Ja 9nan) walima ja axiale (axial).

Jaa 9 bulon minɛlen minɛlen don slot kɔnɔ. Frontal Pd-weighted view kɔfɛ tulumafɛnw balili kɔfɛ. Meniscus fragment (arrow) min bɛ bɔ a la, o bɛ ɲɔgɔn sɔrɔ ACL (arrow) la.

Meniscal basigibaliya taamasiɲɛ wɛrɛ ye meniscal fragments periferiw ka jiginni dɔnni ye senkɔniw ka meniscal recess walima senkɔni-tibial recess la. O jiginniw bɛ kɛ ni furakɛli menisiki dɔrɔn ye, wa u ye gɛlɛya ye min bɛ sɔrɔ joli-sira-funu-kɔnɔ-ko dɔw la 10% la. Koronawirisi ni tɛmɛsira minnu bɛ kɛ ka o yɔrɔw dɔn, olu ye fɛɛrɛ ɲuman ye.

Meniscus detachment .

Meniscal detachment bɛ sɔrɔ valgus joginni jugumanba fɛ ani a bɛ sɔrɔ meniscus ka capsular appendage tiɲɛni fɛ. Olu ka teli ka nɔ bila meniskusi cɛmancɛ kɔfɛla la min bɛ nɔrɔ kolotuguda la ka tɛmɛ kolotuguda kapisi (ligament oblique kɔfɛta) kan.

U bɛ kɛ sababu ye ka milimɛtɛrɛ 5 wuli ka taa menisiki sanfɛla la ka bɔ tibial plati kɔfɛla dancɛ la sagittal jaw kan (Ja 11), walima ji doncogo meniscus basigilen ni joli-sira-funu-yɔrɔ cɛ.

Jaa 11 Meniscus kɔfɛla kɔkanna bɔli. Sagittal proton density view. Meniscus faralen ɲɔgɔn kan, o bɛ bɔ a nɔ na ɲɛfɛ. Yɔrɔba dɔ bɛ yen min bɛ kɛ ka caya (*) meniscus basigilen ni kɔfɛla kapisi (arrow) cɛ.

Meniscus floating .

Nin ye joginni farinyalen dɔ de ye wa a bɛ sɔrɔ meniscal-tibial ligament tiɲɛni ni meniscus cɛmancɛ yɔrɔ cɛmancɛ la. MRI kan, meniscus faralen ɲɔgɔn kan, o bɛ lamini pewu ni ji ye ani a bɛ ye ka 'float' kɛ tibial plateau kan (Ja 12).

Jaa 12 Meniscus min bɛ panpan. Frontal proton density view ni fat saturation. Meniscus faralen ɲɔgɔn kan, o bɛ lamini ni ji ye, kɛrɛnkɛrɛnnenya la a duguma-yɔrɔ ni tibial plateau (arrow) cɛ.

Opereli kɔfɛ meniscus .

Dimi min bɛ segin ka kɛ menisikili kɔfɛ, o bɛ gɛlɛya caman lase bana sɛgɛsɛgɛli ma: segin-ka-bɔnyew, cɛnimusoya kɔfɛ, kondɔrɔsi, kolosinsinnanw, walima joli-sira-funu. MRI ka teli ka dɛsɛ ka fɛnɲɛnamafagalanw sɔrɔ minnu bɛ segin-ka-bɔ bawo meniscectomy bɛ cɛmancɛ fanga bonya minnu bɛ 'hakɛ' kumaɲɔgɔnya ni meniscus surface ye. Sɔrɔ kelen min tun bɛ jate bana ye ani min kɔrɔfɔra ko fissure segin-segin, o ye ji ye min bɛ kɛ ka caya ja la min bɛ kɛ ni T2 ye. Nin dantigɛli ninnu MRI nɔgɔman dɔrɔn de ye sɛbɛnnikɛla dɔw bila ka MRI arthroscopie baaracogo jira, hali ni a sɔrɔla tuguni, a nɔfɛkow tɛ bɛn ɲɔgɔn ma.

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