6533b81ffe1ef96bd127887a
RESEARCH PRODUCT
Effect of lumbar disc replacement on the height of the disc space and the geometry of the facet joints: a cadaver study.
M. RauschmannM. KokkinakisK. KafchitsasB. Habermannsubject
musculoskeletal diseasesAdultMalemedicine.medical_specialtyFacet (geometry)LordosisGeometryZygapophyseal JointFacet jointLumbar discCadaverMedicineHumansOrthopedics and Sports MedicineArthroplasty ReplacementArthrographyIntervertebral DiscAgedAged 80 and overLumbar Vertebraebusiness.industryIntervertebral discAnatomyProstheses and ImplantsMiddle Agedmedicine.diseaseIntervertebral diskmedicine.anatomical_structureOrthopedic surgeryLordosisSurgeryFemaleStress MechanicalbusinessTomography X-Ray Computeddescription
In a study on ten fresh human cadavers we examined the change in the height of the intervertebral disc space, the angle of lordosis and the geometry of the facet joints after insertion of intervertebral total disc replacements. SB III Charité prostheses were inserted at L3-4, L4-5, and L5-S1. The changes studied were measured using computer navigation sofware applied to CT scans before and after instrumentation. After disc replacement the mean lumbar disc height was doubled (p < 0.001). The mean angle of lordosis and the facet joint space increased by a statistically significant extent (p < 0.005 and p = 0.006, respectively). By contrast, the mean facet joint overlap was significantly reduced (p < 0.001). Our study indicates that the increase in the intervertebral disc height after disc replacement changes the geometry at the facet joints. This may have clinical relevance.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-04-01 | The Journal of bone and joint surgery. British volume |