Int J Med Robot - Use of robotic technology in cam femoroacetabular impingement corrective surgery.

Tópicos

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Resumo

CKGROUND: Cam type femoroacetabular impingement (FAI) is an anatomical disorder that can lead to osteoarthritis (OA) of the hip joint. With existing surgical options there is invariably a tendency for under-resection or over-resection of the cam lesion, both having dire consequences. This study assessed the application of robotic technology in the surgical management of cam FAI.METHODS: Three different dry-bone femur models (14 in each) with severe cam deformity underwent corrective surgery using a haptic robot with active constraints. The 'post surgery', models were CT scanned and 3-D alpha angles and head/neck ratios (HNRs) were compared with pre-operative plans.RESULTS: In all models, the robotic resection resulted in a measured reduction of the maximum alpha angle to an angle indicative of no clinical impingement (first model 91? vs 49? ? 3?, second 91? vs 55? ? 5?, and third 87? vs 47? ? 2? P < 0.001). Similarly, the HNRs for all models reduced substantially following resection surgery.CONCLUSIONS: This dry bone study validates the use of robotic technology to perform cam FAI corrective surgery. A more accurate bony resection may minimize complications due to over- and under-resection.

Resumo Limpo

ckground cam type femoroacetabular imping fai anatom disord can lead osteoarthr oa hip joint exist surgic option invari tendenc underresect overresect cam lesion dire consequ studi assess applic robot technolog surgic manag cam faimethod three differ drybon femur model sever cam deform underw correct surgeri use haptic robot activ constraint post surgeri model ct scan d alpha angl headneck ratio hnrs compar preoper plansresult model robot resect result measur reduct maximum alpha angl angl indic clinic imping first model vs second vs third vs p similar hnrs model reduc substanti follow resect surgeryconclus dri bone studi valid use robot technolog perform cam fai correct surgeri accur boni resect may minim complic due underresect

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