Observational studyJournal of orthopaedic surgery and research2018
Using anatomical landmarks to calculate the normal joint line position in Chinese people: an observational study.
Observational study in Journal of orthopaedic surgery and research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Impact of Joint Line Displacement on Function and Quality of Life After Primary Total Knee Arthroplasty.Journal of clinical medicine · 2026Article
- CT-based estimation of medial and lateral femoral joint lines in extension and flexion: A large three-dimensional validation study.Journal of experimental orthopaedics · 2026Article
- Standardizing Joint-Line determination on anteroposterior knee radiographs: multicenter validation of the adductor ratio and a novel composite index in 3000 knees.Archives of orthopaedic and trauma surgery · 2026Article
- Article
- Identification of the joint line in revision total knee arthroplasty using a multiple linear regression model: a cadaveric study.Archives of orthopaedic and trauma surgery · 2023Article
- Knee joint line related to bony landmarks of the knee: a radiologic study in a Thai population.Knee surgery & related research · 2022Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundRestoring the normal joint line (JL) is an important goal to achieve in total knee arthroplasty (TKA). We intended to study the veracity of several landmarks used to level the normal JL in Chinese people.
methodsTwo hundred fifteen standard CT scans of knee joint were included to measure the distances from landmarks to distal JL (DJL) and posterior JL (PJL), along with femoral width (FW) in order to calculate the ratios. Landmarks included adductor tubercle (AT), medial epicondyle (ME), lateral epicondyle (LE), tibial tubercle (TT), fibular head (FH) and the inferior pole of the patella (IPP). Ratios were calculated between distances and FW (e.g. FHDJL/FW). Linear regression analysis and t test were used to determine the accuracy and the differences amongst sides of the leg, genders and races.
resultsThe average of IPPDJL/FW, TTDJL/FW, FHDJL/FW, LEDJL/FW, LEPJL/FW, MEDJL/FW, MEPJL/FW, ATDJL/FW and ATPJL/FW were 0.165, 0.295, 0.232, 0.297, 0.281, 0.327, 0.3PJL, 0.558 and 0.313, respectively. No significant difference had been found between the left and right leg. A gender difference was only found statistically on the ratio of IPP, and also, no linear correlation was observed only between IPP and FW. Most of the difference values lain in a 4-mm threshold for MEDJL (95.81%), LEDJL (94.88%), MEPJL (97.21%), LEPJL (94.88%), ATPJL (93.49%) and ATDJL (100%). Significant differences were observed amongst different races.
conclusionsAT, ME and LE can be used as reliable landmarks to locate the normal JL in Chinese population intraoperatively. It is meaningful to come up with a set of ratios to different races.
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