Litaba - Imaging Orthopedic: The "Terry Thomas Sign" le Scapholunate Dissociation

Imaging Orthopedic: "Terry Thomas Sign" le Scapholunate Dissociation

Terry Thomas ke rametlae ea tummeng oa Borithane ea tsebahalang ka lekhalo la hae le ikhethang lipakeng tsa meno a hae a ka pele.

Likotsing tsa letsoho, ho na le mofuta oa kotsi eo ponahalo ea eona ea radiographic e ts'oanang le lekhalo la meno la Terry Thomas. Frankel o ile a bua ka sena e le "letšoao la Terry Thomas," le tsejoang hape e le "letšoao la lekhalo la leino le fokolang."

Ponahalo ea Radiographic: Ha ho na le scapholunate dissociation le ho taboha ha scapholunate interosseous ligament, pono ea anteroposterior ea letsoho kapa pono ea coronal ho CT e bontša lekhalo le ntseng le eketseha pakeng tsa masapo a scaphoid le a lunate, a tšoana le lekhalo la leino le fokolang.

Tlhahlobo ea Matšoao:Scapholunate dissociation ke mofuta o atileng haholo oa ho se tsitse ha letsoho, o tsejoang hape e le scaphoid rotary subluxation. Hangata e bakoa ke motsoako oa ho atolosa, ho kheloha ha ulnar, le matla a supination a sebelisoang lehlakoreng la palema la letsoho la letsoho, e leng se bakang ho phatloha ha li-ligaments tse tsitsisang palo e haufi ea scaphoid, e leng se lebisang ho arohaneng pakeng tsa scaphoid le masapo a khoeli. The radial collateral ligament le radioscaphocapitate ligament le tsona li ka 'na tsa taboha.

Mesebetsi e pheta-phetoang, likotsi tsa ho tšoara le ho potoloha, congenital ligament laxity, le phapang e mpe ea ulnar le tsona li amahanngoa le ho arohana ha scapholunate.

Tlhahlobo ea Litšoantšo: X-ray (ka papiso ea linaha tse peli):

1. Lekhalo la Scapholunate > 2mm e belaella ho arohana; haeba ho feta 5mm, e ka fumanoa.

2. Letšoao la selikalikoe sa scaphoid cortical, le sebaka se pakeng tsa moeli o ka tlaase oa selikalikoe le bokaholimo bo haufi ba scaphoid e leng <7mm.

3. Ho khutsufatsa ha scaphoid.

4. Ho eketseha ha sekhahla sa scapholunate: Ka tloaelo, ke 45-60 °; angle radiolunate > 20 ° e bonts'a Dorsal Intercalated Segment Instability (DISI).

5. Letšoao la Palmar "V": Ka pono e tloaelehileng ea lehlakoreng la letsoho la letsoho, mahlakoreng a palema a metacarpal le masapo a radial a etsa sebopeho sa "C". Ha scaphoid e fetoha ka tsela e sa tloaelehang, moeli oa eona oa palema o kopana le moeli oa palema oa radial styloid, ho etsa sebopeho sa "V".