Tttg measurement

The measurements are used to quantify patellar instability. The distance from the tibial tuberosity to the trochlear groove is measured parallel to the tangential line through posterior femoral condyles:. One hundred rotational profile CT scans were retrospectively collected from patients without knee joint problems aged between to years.

TT-TG distances were measured , and statistical analysis was performed. Song EK(1), Seon JK(1), Kim MC(1), Seol YJ(1), Lee SH(1).

TT-TG characterises the lateralisation of the tibial tuberosity and the medialisation of the trochlear groove in the case of trochlear dysplasia.

The TT-TG Index: a new knee size adjusted measure method to determine the TT -TG distance.

The aim of this study was to assess the inter- and intraobserver reliability of the measurement of TT-TG dependent on the grade of trochlear dysplasia. Hingelbaum S(1), Best R, Huth J, Wagner Bauer G, Mauch F. Author information: (1)Sportklinik Stuttgart, Taubenheimstr. PURPOSE: Medial transfer of the tibial tubercle has . This measurement has historically been performed utilizing axial computed tomography (CT). More recently, magnetic resonance imaging (MRI) has been proposed as an equivalent metho but this has not yet been fully validated.

It also identifies three principal factors of instability: trochlear dysplasia, abnormal patellar height and pathological tibial tubercle-trochlear groove ( TT-TG ) distance. Imaging is crucial for correct classification and for identifying and measuring the principal factors of instability. Hinckel BB(1), Gobbi RG(2), Kihara Filho EN(3), Demange MK(1), Pécora JR(1), Rodrigues MB(3), Camanho GL(1).

BACKGROUND: The tibial tubercle-trochlear groove ( TT-TG ) measurement was developed to quantify morphologic abnormalities about the knee associated with patellar instability and to help guide surgical decision making. Recurrent patellar instability, however, frequently affects children, but normal and pathological TT-TG values have not been established for pediatric patients. Tuberosity-Trochlear Groove ( TT-TG ). Radiologic Measurement of Tibial.

Distance by Lower Extremity Rotational. Profile Computed Tomography in Koreans. MRI shows significant lateral patellar subluxation with some tilt.

Trochlear dysplasia (flat trochlea) Large medial facet chondral deficiency with loose fragment in suprapatellar pouch. MPFL seems to be attached to medial fx fragment. Originally described on radiographs and CT, and later on MRI, this measurement quantifies the lateral distance from the trochlear groove to the tibial tubercle, .