Mae gwaith manwl wedi'i wneud mewn perthynas â nifer o wasanaethau arbenigol y bydd eu hangen i gefnogi rhoi'r MTC ar waith. Yn enwedig mewn perthynas â llawdriniaeth thorasig, mae'r ddarpariaeth bresennol wedi'i rhannu rhwng Ysbyty Treforys ac Ysbyty Athrofaol Cymru.  Yn dilyn adolygiad gan banel annibynnol ac ymgynghoriad cyhoeddus mewn perthynas â darparu llawdriniaeth thorasig ar draws y rhanbarth, casglwyd y dylai ysbyty Treforys fod yn un safle ar gyfer llawdriniaeth thorasig i'r Canolbarth a'r De. Cytunwyd ar ateb interim i sicrhau presenoldeb llawfeddygol thorasig digonol yn y MTC ar gyfer achosion argyfwng, gan fod y MTC yn debygol o fod ar waith cyn i lawdriniaeth thorasig gael ei had-drefnu. Caiff y trefniant ei adolygu tra bo trafodaethau'n parhau ar fanylion y model un safle.
Detailed work has also been undertaken in relation to a number of specialised services which will be required to support the implementation of the MTC. In particular in relation to thoracic surgery, current provision is split across Morriston Hospital and UHW. Following an independent panel review and public consultation in relation to the future provision of thoracic surgery across the region, it was concluded that Morriston Hospital should be a single site for thoracic surgery for Mid and South Wales. An interim solution has been agreed to ensure adequate thoracic surgical presence at the MTC for emergency cases, as the MTC is likely to be operational prior to the wider reorganisation of thoracic surgery. This arrangement will be kept under review while discussions continue on the finer details of the single site model.