3D-location of the L5-S1 fulcrum in relation to the hip.
The purpose of the present study was to measure the three-dimensional distance between the hips and L5-S1 joint in vivo so that this data could then be used in computer programs predicting the load at the lumbosacral joint from posture and anthropometric data. Twenty-one subjects were investigated with computed tomography; consecutive transverse slices were taken from the low-back to proximal thigh, and three-dimensional coordinates were recorded. The distance between the hips and the L5-S1 joint was 122 mm, corresponding to 6.9% and 7.5% of body height for men and women, respectively (P less than 0.05).
Németh
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G
Department of Orthopaedic Surgery, Karolinska Hospital, Stockholm, Sweden.
Ohlsén
H
H
D000368:Aged; D005260:Female; D006621:Hip Joint / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D006801:Humans; D008161:Lumbosacral Region; D008297:Male; D008875:Middle Aged; D013131:Spine / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed