TY  - JOUR
TI  - Cartilage Specific MR Sequences in Assessment of Lunate Types and Their Impact on Triangular Fibrocartilage
AB  - Objectives: Our purpose was to investigate the effects of different lunate morphologies on triangular fibrocartilage (TFC) using cartilage specific magnetic resonance imaging (MRI) sequences. Secondarily, we aimed to define better parameters to discriminate two lunate types on MRI and posteroanterior wrist radiographs. Materials and Methods: Wrist MRIs of 118 cases with neutral ulnar variance were retrospectively assessed for lunate types based on the presence of abutting articular cartilage between lunate and hamate on coronal 3D dual echo steady state and 2D multi-echo data image combination images. Posteroanterior radiographs were assessed separately. TFC and cartilage lesions on hamate and lunate were assessed on MRI. Lunate-hamate (L-H) and capitate-triquetrum (C-T) distances were measured on coronal MRI and radiographs. Relationship between lunate types and cartilage lesions were evaluated using X2, Fisher’s exact test, t-test or Mann-Whitney U test. ROC analysis was used to determine cut-off values to best discriminate the two lunate types. Results: Mean age was 38.5±13.4 (M:F=33:85). TFC or lunate cartilage lesions showed no correlation with lunate types. L-H/C-T ratio of 0.907 on MRI and 0.75 on radiographs yielded the highest sensitivity and specificity for discrimination of lunate types. Type 2 morphology was correlated with cartilage degeneration on hamate (p=0.003). Cartilage lesions on hamate, lunate and TFC were significantly correlated with age (p=0.008, p=0.003, p<0.001 respectively). Conclusion: Lunate types had no impact on degenerative changes of TFC or lunate-sided cartilage damage in wrists with neutral ulnar variance, however type 2 morphology was highly correlated with hamate-cartilage degeneration. Age was correlated with degenerative findings on all cartilage surfaces.
AU  - Akkaya, Zehra
AU  - peker, elif
AU  - Gulpinar, Basak
AU  - Gursoy Coruh, Aysegul
AU  - ÜNAL, SENA
AU  - undefined, gülden
AU  - ÇELEBI, MEHMET MESUT
DO  - 10.4274/atfm.galenos.2023.32932
PY  - 2022
JO  - Ankara Üniversitesi Tıp Fakültesi Mecmuası
VL  - 75
IS  - 4
SN  - 0365-8104
SP  - 530
EP  - 537
DB  - TRDizin
UR  - http://search/yayin/detay/1170218
ER  -