Assessment of Femoral Version Should be Assessed Independently of Conventional Measures in Patellofemoral Instability

Ryan Havey; Andrew L Schaver; Alex M Meyer; Kyle R Duchman; Robert Westermann

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Assessment of Femoral Version Should be Assessed Independently of Conventional Measures in Patellofemoral Instability

Journal article

Open access

Peer reviewed

Assessment of Femoral Version Should be Assessed Independently of Conventional Measures in Patellofemoral Instability

Ryan Havey, Andrew L Schaver, Alex M Meyer, Kyle R Duchman and Robert Westermann

The Iowa orthopaedic journal, Vol.41(2), pp.77-81

12/2021

PMCID: PMC8662923

PMID: 34924873

Appears in Diamond Open Access

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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8662923View

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Abstract

The purpose of the present study is to determine the association between femoral version and traditional pathologic bony factors commonly used to measure and define patellofemoral alignment. We performed a retrospective review of patients treated for patellofemoral instability (PFI) at a single institution. Patients included underwent magnetic resonance imaging (MRI) of the lower extremity using a rotational protocol prior to medial patellofemoral ligament reconstruction with or without tibial tubercle osteotomy. Those with a history of ipsilateral lower extremity surgery were excluded. Two independent reviewers measured femoral version, tibial tubercle-trochlear groove (TT-TG) distance, tibial tubercle-posterior cruciate ligament (TT-PCL) distance, and tibial torsion (TT). Pearson correlation coefficients were used to describe the relationships between all radiographic measures. A total of 51 knees (43 patients) were included. The average age and body mass index were 23.7 9.33 years and 29.23 8.04 kg/ m2, respectively. The mean femoral version was 15.61 11.57°. The degree of femoral version did not significantly correlate with TT-TG (r=0.103, p=0.474), TT-PCL (-0.086, p=0.550), or TT (r=0.111, p=0.438). Increased TT-TG distance was strongly associated with increased TT-PCL (r=0.470, p=0.001). In females, increased femoral version significantly correlated with increased TT (r=0.381, p=0.029). Neither increased nor decreased amounts of femoral anteversion significantly correlated with TT-TG, TT-PCL, or TT. Therefore, assessment of femoral version should be measured independently of conventional measures when considering osteotomies to correct PFI. IV.

Female

Femur - diagnostic imaging

Femur - surgery

Humans

Joint Instability - diagnostic imaging

Joint Instability - surgery

Lower Extremity

Magnetic Resonance Imaging

Patellofemoral Joint - diagnostic imaging

Patellofemoral Joint - surgery

Retrospective Studies

Tibia - diagnostic imaging

Tibia - surgery

Details

Title: Subtitle: Assessment of Femoral Version Should be Assessed Independently of Conventional Measures in Patellofemoral Instability
Creators: Ryan Havey - Carver College of Medicine, University of Iowa, Iowa City, IA, USA
Andrew L Schaver - University of Iowa
Alex M Meyer - University of Iowa
Kyle R Duchman - University of Iowa
Robert Westermann - University of Iowa
Resource Type: Journal article
Publication Details: The Iowa orthopaedic journal, Vol.41(2), pp.77-81
Publisher: Dept. of Orthopaedics, The University of Iowa; United States
PMID: 34924873
PMCID: PMC8662923
ISSN: 1541-5457
eISSN: 1555-1377
Language: English
Date published: 12/2021
Academic Unit: Orthopedics and Rehabilitation; Surgery; Athletic Training Program
Record Identifier: 9984303966402771

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