| Title |
Influence of knee flexion angle and weight bearing on the Tibial Tuberosity‐Trochlear Groove (TTTG) distance for evaluation of patellofemoral alignment
|
|---|---|
| Published in |
Knee Surgery, Sports Traumatology, Arthroscopy, May 2013
|
| DOI | 10.1007/s00167-013-2537-5 |
| Pubmed ID | |
| Authors |
Kaywan Izadpanah, Elisabeth Weitzel, Marco Vicari, Jürgen Hennig, Matthias Weigel, Norbert P. Südkamp, Philipp Niemeyer |
| Abstract |
The aim of the present study was to investigate the influence of knee flexion and weight bearing on the Tibial Tuberosity-Trochlear Groove (TTTG) distance. Magnetic resonance imaging of the knee was carried out in 8 healthy volunteers. An open 0.25 T scanner equipped with a C-shaped permanent tilting magnet allowing examinations in weight-bearing conditions was used for the present investigation. A 3D gradient-echo sequence with axial slice orientation was obtained in a lying and an upright position with the knee straight and at 30° of knee flexion. The medial, central and lateral trochlear heights as well as the TTTG were determined. The mean medial trochlear height was 76.2 ± 4%, the central trochlear height was 72.2 ± 3%, and lateral trochlear height was 82.9 ± 3 %. The mean TTTG distance was 11.6 ± 4.4 mm in lying position at 0° knee flexion and 7.3 ± 2.9 mm (n.s.) at 30° knee flexion. Under weight bearing, the mean TTTG was significantly smaller at both 0° knee flexion 6.3 ± 3.2 mm (p = 0.040) and 30° knee flexion 4.9 ± 3.9 mm (p = 0.006) compared to the lying position with 0° knee flexion. Tibial Tuberosity-Trochlear Groove distance depends on both knee flexion angle and weight bearing. The latter only seems to be of relevance in full extension. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 67 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Netherlands | 1 | 1% |
| Unknown | 66 | 99% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 13 | 19% |
| Student > Ph. D. Student | 9 | 13% |
| Other | 8 | 12% |
| Student > Bachelor | 6 | 9% |
| Student > Master | 6 | 9% |
| Other | 15 | 22% |
| Unknown | 10 | 15% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 36 | 54% |
| Engineering | 7 | 10% |
| Biochemistry, Genetics and Molecular Biology | 2 | 3% |
| Physics and Astronomy | 1 | 1% |
| Nursing and Health Professions | 1 | 1% |
| Other | 2 | 3% |
| Unknown | 18 | 27% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 June 2018.
All research outputs
#15,536,861
of 23,090,520 outputs
Outputs from Knee Surgery, Sports Traumatology, Arthroscopy
#1,812
of 2,680 outputs
Outputs of similar age
#121,163
of 196,007 outputs
Outputs of similar age from Knee Surgery, Sports Traumatology, Arthroscopy
#25
of 41 outputs
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