Publications by authors named "Olivia Fox"

11 Publications

  • Page 1 of 1

Massive Chondrolysis and Joint Destruction after Artificial Anterior Cruciate Ligament Repair.

Case Rep Orthop 2021 26;2021:6634935. Epub 2021 May 26.

Department of Orthopaedics, Bathurst Hospital, Bathurst, NSW 2795, Australia.

The Ligament Augmentation Reconstruction System (LARS) is an artificial ligament made of polyethylene terephthalate (PET) used for anterior cruciate ligament (ACL) reconstruction in Australia. Poor results with previous generations of synthetic grafts causing synovitis, graft failure, and premature osteoarthritis have encouraged the production of the newer LARS ligament with good results. We present a case of massive chondrolysis and joint destruction after LARS implantation requiring total knee replacement in a 23-year-old male. This case documents a rare and severe complication to the LARS ligament as caution for the implementation of this device in young athlete.
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http://dx.doi.org/10.1155/2021/6634935DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8172314PMC
May 2021

The glenohumeral ligaments: Superior, middle, and inferior: Anatomy, biomechanics, injury, and diagnosis.

Clin Anat 2021 Mar 13;34(2):283-296. Epub 2021 Jan 13.

Department of Orthopaedic Surgery and Sports Medicine, Hospital for Special Surgery, New York, New York, USA.

The three glenohumeral ligaments (superior, middle, and inferior) are discrete thickenings of the glenohumeral joint capsule and are critical to shoulder stability and function. Injuries to this area are a cause of significant musculoskeletal morbidity. A literature search was performed by a review of PubMed, Google Scholar, and OVID for all relevant articles published up until 2020. This study highlights the anatomy, biomechanical function, and injury patterns of the glenohumeral ligaments, which may be relevant to clinical presentation and diagnosis. A detailed understanding of the normal anatomy and biomechanics is a necessary prerequisite to understanding the injury patterns and clinical presentations of disorders involving the glenohumeral ligaments of the shoulder.
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http://dx.doi.org/10.1002/ca.23717DOI Listing
March 2021

Recurrent and radiographically unrecognized iatrogenic intra-prosthesis hip dislocations.

J Am Coll Emerg Physicians Open 2020 Aug 10;1(4):419-422. Epub 2020 May 10.

Department of Orthopaedics Shoalhaven District Memorial Hospital Nowra New South Wales Australia.

Hip dislocation is a common complication after total hip arthroplasty surgery. Newer prosthetic implants aim to reduce the risk of dislocation. The new dual mobility implant has a unique design that may result in intra-prosthetic dislocation. We report a case of a recurrently missed iatrogenic intra-prosthetic dislocation following closed reduction efforts in the emergency department (ED). Emergency physicians must be aware of the design, pitfalls, and management of this new prosthetic hip design.
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http://dx.doi.org/10.1002/emp2.12050DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7493521PMC
August 2020

Primary Open Abductor Reconstruction: A 5 to 10-Year Study.

J Arthroplasty 2020 04 14;35(4):941-944. Epub 2019 Nov 14.

Department of Orthopaedics, St John of God Hospital, Windsor, New South Wales, Australia.

Background: Gluteal tears are recognized as the source of pain over the greater trochanter. We investigated the outcome of primary open abductor tendon reconstruction with a 5-10 year follow-up.

Methods: One hundred sixty-five consecutive hips underwent an open abductor tendon reconstruction, with all tears confirmed preoperatively by magnetic resonance imaging. Oxford Hip Scores (OHS) were assessed at the initial visit, and at 5-10 years.

Results: The average preoperative OHS was 22 (range 7-34) and average postoperative OHS was 40 a difference of 18 (P < .0001).

Conclusion: Surgical reconstruction of degenerate abductor tendons should be considered in the presence of a magnetic resonance imaging confirmed separation where clinical findings are consistent with the known tendon disruption. Open transosseous reconstruction reliably results in good pain relief at 5-10 years.
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http://dx.doi.org/10.1016/j.arth.2019.11.012DOI Listing
April 2020

The change in position of the axillary nerve with rotation of the arm.

Clin Anat 2019 Mar 8;32(2):268-271. Epub 2018 Nov 8.

Department of Orthopaedics, Westmead Hospital, Sydney, New South Wales, Australia.

The axillary nerve is the most commonly injured nerve around the arm. In the deltopectoral approach, classical teaching states that lateral rotation of the humerus increases the distance between the subscapularis and the axillary nerve. This is the first anatomical study to quantify the distance change between the axillary nerve and subscapularis produced by arm rotation. Eight arms were placed in the supine position and a classical deltopectoral approach was performed. With digital calipers, measurements were made from the closest identifiable margin of the nerve to the inferior extent of the tenotomy. All measurements were made with the arm in 0° abduction and elbow in 90° of flexion, and repeated with the arm in 45° of medial rotation, 0° lateral rotation and 45° of lateral rotation. The mean d Axillary Nerve to subscapularis was recorded as 30.9 mm (95% CI:25.3-36.3), 39.4 mm(95% CI:34.1-44.8), and 46.1 mm (95% CI:41.1-51.2) for 45° MR, 0°, and 45° LR, respectively. Using paired-samples T-testing, the mean change in distance when moving from 45° MR to 0° was +8.5 mm (P < 0.0001), and from 0° to LR 45°, +6.7 mm (P < 0.0001). There is a significant difference in the distance between the subscapularis tenotomy and the axillary nerve with medial and lateral rotation. Laterally rotating the arm increased the distance by 6.7 mm, reaffirming that positioning the glenohumeral joint in a position of LR during subscapular tenotomy is protective against iatrogenic injury of the axillary nerve. Clin. Anat. 32:268-271, 2019. © 2018 Wiley Periodicals, Inc.
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http://dx.doi.org/10.1002/ca.23295DOI Listing
March 2019

1q24 deletion syndrome. Two cases and new insights into genotype-phenotype correlations.

Am J Med Genet A 2018 09 6;176(9):2004-2008. Epub 2018 Aug 6.

Oxford Centre for Genomic Medicine, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.

1q24q25 deletions cause a distinctive phenotype including proportionate short stature, microcephaly, brachydactyly, dysmorphic facial features and intellectual disability. We present a mother and son who have a 672 kb microdeletion at 1q24q25. They have the typical skeletal features previously described but do not have any associated intellectual disability. We compare the genes within our patients' deletion to those in the deletions of previously reported cases. This indicates two genes that may be implicated in the intellectual disability usually associated with this deletion syndrome; PIGC and C1orf105. In addition, our cases provide supporting evidence to recent published work suggesting that the skeletal features may be linked to the microRNAs miR199 and miR214, encoded within intron 14 of the Dynamin-3 gene.
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http://dx.doi.org/10.1002/ajmg.a.40426DOI Listing
September 2018

Contiguous Silicone Oil Migration From the Vitreous Cavity to the Optic Tract.

J Neuroophthalmol 2017 12;37(4):464-465

Prince of Wales Hospital, Sydney, Australia Nepean Hospital, Sydney, Australia Department of Ophthalmology, Save Sight Institute, Sydney Eye Hospital, Sydney, Australia Prince of Wales Hospital, Sydney St Vincent's Private Hospital, Lismore, Australia Department of Ophthalmology, Prince of Wales Hospital, Sydney, Australia.

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http://dx.doi.org/10.1097/WNO.0000000000000588DOI Listing
December 2017

How Configural Is the Configural Superiority Effect? A Neuroimaging Investigation of Emergent Features in Visual Cortex.

Front Psychol 2017 23;8:32. Epub 2017 Jan 23.

Department of Psychology, Wright State University Dayton, OH, USA.

The perception of a visual stimulus is dependent not only upon local features, but also on the arrangement of those features. When stimulus features are perceptually well organized (e.g., symmetric or parallel), a global configuration with a high degree of salience emerges from the interactions between these features, often referred to as emergent features. Emergent features can be demonstrated in the Configural Superiority Effect (CSE): presenting a stimulus within an organized context relative to its presentation in a disarranged one results in better performance. Prior neuroimaging work on the perception of emergent features regards the CSE as an "all or none" phenomenon, focusing on the contrast between configural and non-configural stimuli. However, it is still not clear how emergent features are processed between these two endpoints. The current study examined the extent to which behavioral and neuroimaging markers of emergent features are responsive to the degree of configurality in visual displays. Subjects were tasked with reporting the anomalous quadrant in a visual search task while being scanned. Degree of configurality was manipulated by incrementally varying the rotational angle of low-level features within the stimulus arrays. Behaviorally, we observed faster response times with increasing levels of configurality. These behavioral changes were accompanied by increases in response magnitude across multiple visual areas in occipito-temporal cortex, primarily early visual cortex and object-selective cortex. Our findings suggest that the neural correlates of emergent features can be observed even in response to stimuli that are not fully configural, and demonstrate that configural information is already present at early stages of the visual hierarchy.
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http://dx.doi.org/10.3389/fpsyg.2017.00032DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5253576PMC
January 2017

Courtship feeding in humans? The effects of feeding versus providing food on perceived attraction and intimacy.

Hum Nat 2013 Dec;24(4):430-43

Department of Psychology, Clemson University, 418 Brackett Hall, Clemson, SC, 29634-1355, USA,

Food sharing may be used for mate attraction, sexual access, or mate retention in humans, as in many other species. Adult humans tend to perceive more intimacy in a couple if feeding is observed, but the increased perceived intimacy may be due to resource provisioning rather than feeding per se. To address this issue, 210 university students (66 male) watched five short videos, each showing a different mixed-sex pair of adults dining together and including feeding or simple provisioning or no food sharing. A survey concerning attraction and intimacy in the dyad was completed after each video. Both provisioning and feeding produced higher ratings of "Involvement," with feeding producing the highest ratings. Similarly, the perceived attraction of each actor to the other was lowest when no food sharing was shown and highest when feeding was displayed. These findings are consistent with a view of feeding as a courtship display in humans.
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http://dx.doi.org/10.1007/s12110-013-9179-7DOI Listing
December 2013

Technique to exclude temporal lash incursion in phacoemulsification surgery.

J Cataract Refract Surg 2012 Nov;38(11):1885-7

Department of Ophthalmology, Prince of Wales Hospital, University of New South Wales, Sydney, Australia.

Unlabelled: We describe the use of a Steri-Strip to exclude lashes in cataract surgery cases in which the lashes impinge on the operative field. The technique has been used in 25 cases and achieved uniformly successful lash exclusion. In 6 cases, the strip became partially dislodged and required repositioning intraoperatively, after which it achieved complete lash exclusion. No complications have been observed.

Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned.
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http://dx.doi.org/10.1016/j.jcrs.2012.09.005DOI Listing
November 2012