Bone and joint modeling from 3D knee MRI: feasibility and comparison with radiographs and 2D MRI.
OBJECTIVE
The purpose was to evaluate feasibility of bone and joint segmentations from three-dimensional magnetic resonance imaging (3D MRI).


METHODS
Segmented joint models from 3D MRI data set were obtained for 42 patients. Blinded angular and joint space measurements were performed on 3D MRI model, two-dimensional (2D) MRI, and radiography (XR).


RESULTS
Medial joint space was similar on both XR and 3D MRI (P=.3). The XR measurements were statistically different but closer to 3D MRI for lateral patellar tilt angle, patellar tendon length, and lateral knee joint space, whereas 2D MRI measurements were closer to XR in terms of trochlear depth, sulcal angle, and patellar length.


CONCLUSIONS
3D bone and joint segmentations are feasible from isotropic MRI data sets.
Department of Radiology, University of Arkansas for Medical Sciences, Little Rock, AR; Musculoskeletal Radiology, University of Texas Southwestern Medical Center, Dallas, TX.
Vibhor
V
Wadhwa
Musculoskeletal Radiology, University of Texas Southwestern Medical Center, Dallas, TX.
Vidur
V
Malhotra
Musculoskeletal Radiology, University of Texas Southwestern Medical Center, Dallas, TX.
Yin
Y
Xi
Musculoskeletal Radiology, University of Texas Southwestern Medical Center, Dallas, TX.
Shaun
S
Nordeck
Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX.
Katherine
K
Coyner
Musculoskeletal Radiology, University of Texas Southwestern Medical Center, Dallas, TX. Electronic address: avneesh.chhabra@utsouthwestern.edu.
Avneesh
A
Chhabra
D005240:Feasibility Studies; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007719:Knee Joint / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008954:Models, Biological; D011859:Radiography / Q000379:methods*; D012189:Retrospective Studies
3D; Joint space; Knee; MRI; Modeling