Forefoot varus and knee osteoarthritis

NewsBot · Nov 25, 2016

Members do not see these Ads. Sign Up.
The Association of Forefoot Varus Deformity with Patellofemoral Cartilage Damage in Older Adult Cadavers
Rebecca S. Lufler, Joshua J. Stefanik, Jingbo Niu, F. Kip Sawyer, Todd M. Hoagland, K. Douglas Gross
Anatomical Record; 24 November 2016

INTRODUCTION: Forefoot alignment may contribute to patellofemoral joint (PFJ) osteoarthritis (OA) via its influence on the closed chain kinematics of the lower limb. The purpose of this cadaveric study was to investigate the relationship between forefoot varus and ipsilateral cartilage damage in the medial and lateral PFJ.

MATERIALS AND METHODS: Forefoot alignment measurements were obtained from the feet of 25 cadavers (n=50). Cartilage damage in the medial and lateral PFJ of each knee was scored using the Outerbridge scale. The relative odds of medial and lateral PFJ cartilage damage in limbs with forefoot varus and valgus were determined using logistic regression. The relationship between increasing varus alignment and increasing odds of medial and lateral PFJ cartilage damage was assessed.

RESULTS: Of the 51% of limbs with forefoot varus, 91.3% had medial and 78.3% had lateral PFJ cartilage damage, compared to 54.6% and 68.2% of those with forefoot valgus. The former also had 3.0 times (95% CI 1.2, 7.7) the odds of medial PFJ damage; no association was found with lateral damage (OR 1.4, 95% CI 0.7, 3.0). Feet in the highest tertile of varus alignment had 3.9 times (95% CI 10, 15.3, p=0.058) the odds of medial PFJ damage as those in the lowest tertile.

CONCLUSIONS: The results of this study suggest a relationship between forefoot varus and medial PFJ cartilage damage in older adults. As forefoot varus may be modified with foot orthoses, these findings indicate a potential role for orthoses in the treatment of medial PFJ OA. This article is protected by copyright. All rights reserved.
Click to expand...

Admin2 · Nov 25, 2016

Related Topics:
Other threads on forefoot varus
Effect of Forefoot varus on eccentric hip torque

Craig Payne · Nov 25, 2016

Blogged about this study here: http://www.itsafootcaptain.com/is-forefoot-varus-related-to-patellofemoral-osteoarthritis/

There is an increasing body of literature failing to make those distinctions. This has to stop.
Click to expand...

Dieter Fellner · Nov 25, 2016

Craig Payne said: ↑

Blogged about this study here: http://www.itsafootcaptain.com/is-forefoot-varus-related-to-patellofemoral-osteoarthritis/
Click to expand...

What genius decided that a corpse is a good subject for this kind of study ....

NewsBot · Jun 7, 2022

Increasing grades of frontal deformities in knee osteoarthritis are not associated with ligamentous ankle instabilities
F Graef et al
Knee Surg Sports Traumatol Arthrosc. 2022 Jun 6

Purpose: Varus or valgus deformities in knee osteoarthritis may have a crucial impact on ankle subtalar range of motion (ROM) and ligamentous stability. The purpose of this study was to assess whether the grade of ankle eversion and inversion rotation stability was influenced by frontal deformities of the knee joint.

Methods: Patients who were planned to undergo total knee arthroplasty (TKA) were prospectively included in this study. Patients were examined radiologically (mechanical tibiofemoral angle (mTFA), hindfoot alignment view angle (HAVA), anterior distal tibia angle (ADTA)) and clinically (ROM of the knee and ankle joint, foot function index, knee osteoarthritis outcome score). Ankle stability was assessed using an ankle arthrometer (AA) to test inversion/eversion (ie) rotation and anterior/posterior (ap) displacement stability of the ankle joint. Correlations were calculated using Pearson's coefficient, and differences between two independent groups of nonparametric data were calculated using a two-sided Wilcoxon signed rank test.

Results: Eighty-two (varus n = 52, valgus n = 30) patients were included. The preoperative mTFA significantly correlated with the HAVA (Pearson's correlation = - 0.72, p < 0.001). Laxity testing of the ankle demonstrated that in both varus and valgus knee osteoarthritis, higher grades of mTFA did not correlate with the inversion or eversion capacity of the ankle joint. The ADTA significantly correlated with the posterior displacement of the ankle joint (cor = 0.24, p = 0.049).

Conclusions: This study could not confirm that higher degrees of frontal knee deformities in osteoarthritis were associated with increasing grades of ligamentous ankle instabilities or a reduced ROM of the subtalar joint.
Click to expand...

NewsBot The Admin that posts the news.

Admin2 Administrator Staff Member

Craig Payne Moderator

Dieter Fellner Well-Known Member

NewsBot The Admin that posts the news.

Forefoot Varus Wedge for Hallux Valgus

CMT and Hindfoot varus and forefoot valgus definitions

Recommended posting for the (rare) truly varus forefoot

Forefoot varus?

True Forefoot Varus deformity

Functional hallux limitus in forefoot varus - solution?

Forefoot varus and the centre of pressure

Share This Page