The Association of Tibia Femur Ratio and Degenerative Disease of the Spine, Hips, and Knees

Weinberg, Douglas S.; Liu, Raymond W.

doi:10.1097/bpo.0000000000000658

Cited by 25 publications

(33 citation statements)

References 36 publications

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“…Similarly, we compared overall cadaveric heights (a useful proxy for overall femur size) previously reported in these specimens to trochlear depth and found no correction. 42 There were no gender differences present in the maximal trochlear depth, a result similar to the findings of Pinskerova et al, who found no sex differences existed in trochlear depth measurements standardized for femoral size. 43 While racial differences in distal femur geometry have been described for other parameters, 17 we are unaware of any literature comparing trochlear depth between races.…”

Section: Discussionsupporting

confidence: 89%

A Cadaveric Analysis of the Optimal Radiographic Angle for Evaluating Trochlear Depth

et al. 2016

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Disorders of the patellofemoral joint are common. Diagnosis and management often involves the use tangential imaging of the patella and trochlear grove, with the sunrise projection being the most common. However, imaging protocols vary between institutions, and limited data exist to determine which radiographic projections provide optimal visualization of the trochlear groove at its deepest point. Plain radiographs of 48 cadaveric femora were taken at various beam-femur angles and the maximum trochlear depth was measured; a tilt-board apparatus was used to elevate the femur in 5-degree increments between 40 and 75 degrees. A corollary experiment was undertaken to investigate beam-femur angles osteologically: digital representations of each bone were created with a MicroScribe digitizer, and trochlear depth was measured on all specimens at beam-femur angles from 0 to 75 degrees. The results of the radiographic and digitizer experiments showed that the maximum trochlear grove depth occurred at a beam-femur angle of 50 degrees. These results suggest that the optimal beam-femur angle for visualizing maximum trochlear depth is 50 degrees. This is significantly lower than the beam-femur angle of 90 degrees typically used in the sunrise projection. Clinicians evaluating trochlear depth on sunrise projections may be underestimating maximal depth and evaluating a nonarticulating portion of the femur.

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Section: Discussionsupporting

confidence: 89%

A Cadaveric Analysis of the Optimal Radiographic Angle for Evaluating Trochlear Depth

et al. 2016

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“…Arthritis grading was performed by two authors (DSW, RWL) and has previously been reported. 15 , 16 These two individuals carefully studied a large number of specimens together to establish grading systems for the hip and knee joints. Arthritis of the proximal femur and acetabulum were graded from zero to three and combined to form a composite hip measurement, graded zero to six.…”

Section: Methodsmentioning

confidence: 99%

Relationship between pelvic incidence and osteoarthritis of the hip

Gebhart

Weinberg

Bohl

et al. 2016

Bone & Joint Research

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ObjectivesSagittal alignment of the lumbosacral spine, and specifically pelvic incidence (PI), has been implicated in the development of spine pathology, but generally ignored with regards to diseases of the hip. We aimed to determine if increased PI is correlated with higher rates of hip osteoarthritis (HOA). The effect of PI on the development of knee osteoarthritis (KOA) was used as a negative control.MethodsWe studied 400 well-preserved cadaveric skeletons ranging from 50 to 79 years of age at death. Each specimen’s OA of the hip and knee were graded using a previously described method. PI was measured from standardised lateral photographs of reconstructed pelvises. Multiple regression analysis was performed to determine the relationship between age and PI with HOA and KOA.ResultsThe mean age was 60.2 years (standard deviation (sd) 8.1), and the mean PI was 46.7° (sd 10.7°). Multiple regression analysis demonstrated a significant correlation between increased PI and HOA (standardised beta = 0.103, p = 0.017). There was no correlation between PI and KOA (standardised beta = 0.003, p = 0.912).ConclusionHigher PI in the younger individual may contribute to the development of HOA in later life.Cite this article: Dr J. J. Gebhart. Relationship between pelvic incidence and osteoarthritis of the hip. Bone Joint Res 2016;5:66–72. DOI: 10.1302/2046-3758.52.2000552.

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“…For consistency, a single photographer positioned all specimens and took all photographs. Measurement of the alpha angle had been conducted prior to our study for the purposes of another study (23), and these measurements therefore existed in a database compiled by our institution. We defined our study group by including only specimens with an alpha angle of <45° or >60°.…”

Section: Methodsmentioning

confidence: 99%

Rotational Alignment of the Knee is Different in Osteological Specimens with and without a Large Cam Deformity of the Proximal Femur

et al. 2017

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The Association of Tibia Femur Ratio and Degenerative Disease of the Spine, Hips, and Knees

Abstract: This is the first study to report long-term consequences of lower extremity segment disproportion.

Cited by 25 publications

References 36 publications

A Cadaveric Analysis of the Optimal Radiographic Angle for Evaluating Trochlear Depth

A Cadaveric Analysis of the Optimal Radiographic Angle for Evaluating Trochlear Depth

Relationship between pelvic incidence and osteoarthritis of the hip

Rotational Alignment of the Knee is Different in Osteological Specimens with and without a Large Cam Deformity of the Proximal Femur

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