Publications by authors named "Patrick Shu Hang Yung"

Background: High tibial osteotomy (HTO) is a surgical procedure for treating certain knee conditions. Proper execution of HTO can preserve joint function and delay or avoid the need for total knee replacement. This study compared different 3D printing techniques (fused deposition modeling, selective laser sintering, and direct metal laser sintering) and a navigation system for their suitability in assisting HTO surgeries.

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  • * The study aims to explore if combining standard exercises with pulse electromagnetic field therapy can enhance stability and reduce muscle weakness in patients with chronic ankle instability.
  • * A randomized trial with 48 participants will compare the effects of active therapy with a placebo over 8 weeks, with evaluations conducted at multiple follow-up points.
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Background: Large Language Models (LLMs) have gained much attention and, in part, have replaced common search engines as a popular channel for obtaining information due to their contextually relevant responses. Osteoarthritis (OA) is a common topic in skeletal muscle disorders, and patients often seek information about it online. Our study evaluated the ability of 3 LLMs (ChatGPT-3.

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Background: Achilles tendinopathy is a common condition without a reproducible and timely treatment modality. Platelet-rich plasma (PRP) injection has been proposed as an enticing treatment option, but there is no consensus regarding its effectiveness.

Purpose: To pool the available data and evaluate the evidence of the effect of PRP injections on Achilles tendinopathy.

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Background: Pulsed electromagnetic field (PEMF) therapy is a potential nonoperative treatment for Achilles tendinopathy, but the current published literature on its effects is sparse.

Purpose: To evaluate the therapeutic efficacy of PEMF therapy and eccentric exercise for Achilles tendinopathy.

Study Design: Randomized controlled trial; Level of evidence, 1.

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  • The text details a new endoscopic treatment for Achilles tendinopathy using a bioinductive collagen scaffold, particularly for cases that haven't improved with non-surgical options.
  • The procedure involves inserting a 4-mm arthroscope through two small portals to perform standard tendon cleaning before placing the collagen scaffold at the injury site.
  • This method is significant as it eliminates the need for open surgery, allowing for a less invasive approach that can be used either on its own or alongside other minimally invasive treatments.
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  • Osteoarthritis of the knee is a prevalent condition in older adults, prompting research into effective treatments such as home exercises and pulsed electromagnetic field (PEMF) therapy to alleviate symptoms.
  • A study involving 60 patients found that those receiving both PEMF and exercise showed significant improvements in muscle strength and functional measures like gait speed and pain levels compared to those who only did home exercises.
  • The combination therapy particularly benefited older patients and highlighted gender differences in outcomes, indicating a promising approach for enhancing quality of life in those with knee osteoarthritis.
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Osteoarthritis (OA) knee is one of the most common chronic degenerative conditions that imposes clinical and economic burdens on individuals and societies worldwide. Previous studies showed vitamin D levels correlated positively with lean muscle mass and grip strength, implying that vitamin D supplementation may improve muscle health in knee OA subjects. This randomized controlled trial (RCT) aims to compare the effects of vitamin D supplementation on knee muscle strength, physical function, pain, and sarcopenia status in patients with end-stage knee OA.

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  • Vitamin D deficiency is associated with poor muscle function and knee osteoarthritis, but its effect on quadriceps strength is uncertain due to varied research designs and participant differences.
  • This systematic review and meta-analysis examined studies published between 2000 and March 2024, focusing on the relationship between serum 25-hydroxyvitamin D levels and quadriceps muscle strength.
  • The analysis included 28 studies with over 5,700 participants, finding a significant positive correlation between vitamin D levels and isokinetic quadriceps strength at a specific speed in elderly and athletic groups, while no correlation was observed for other strength measures.
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The relationship between training load and injury risk in basketball is an important area in sports injury prevention and performance enhancement; however, there is limited conclusive evidence of their associations. The aim of this systematic review was to examine the evidence of the relationship between training load and injury risk in basketball, which is one of the most common sports worldwide. This systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.

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Background: Ligament tension balance is a major determinant for the success of total knee replacement (TKR). The present study aimed at determining the inter-rater and intra-rater reliability in performing ligament tension assessment using an imageless robotic-assisted TKR.

Methods: Twenty-four knees in 21 patients who received robotic-assisted TKR for end-stage varus osteoarthritis were examined.

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Background: This study introduced an Augmented Reality (AR) navigation system to address limitations in conventional high tibial osteotomy (HTO). The objective was to enhance precision and efficiency in HTO procedures, overcoming challenges such as inconsistent postoperative alignment and potential neurovascular damage.

Methods: The AR-MR (Mixed Reality) navigation system, comprising HoloLens, Unity Engine, and Vuforia software, was employed for pre-clinical trials using tibial sawbone models.

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Objectives: Excessive inflammation contributes to the pathogenesis of tendinopathy. Fatty acid binding protein 4 (FABP4) is a pro-inflammatory adipokine mediating various metabolic and inflammatory diseases. This study aimed to examine the expression of FABP4 and its association with the expressions of inflammatory cytokines in tendinopathy.

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Piezo1, a mechanosensitive ion channel, has emerged as a key player in translating mechanical stimuli into biological signaling. Its involvement extends beyond physiological and pathological processes such as lymphatic vessel development, axon growth, vascular development, immunoregulation, and blood pressure regulation. The musculoskeletal system, responsible for structural support, movement, and homeostasis, has recently attracted attention regarding the significance of Piezo1.

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Background: Osteoarthritis (OA) knee patients have limited ability in physical function, or difficulties with physical tasks and activities may develop disability. This study aimed to observe the predictors of self-reported and performance-based physical function in patients with knee OA by analyzing the impacts of demographic, pathological, and muscle impairment factors.

Methods: 135 knee OA patients participated in this study to complete self-reported questionnaires using Knee Injury and Osteoarthritis Outcome Score (KOOS).

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Background: Functional assessments are crucial to evaluate treatment outcomes in clinical and animal studies on rotator cuff injuries. While gait analysis is commonly used to assess animal models of rotator cuff tears, it is less relevant for human patients as the human shoulder is typically assessed in a non-weight-bearing condition. The present study introduces the skilled reaching test as a shoulder functional assessment tool for rats, which allows for evaluation without weight bearing.

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Background: Up to 20% of patients remain unsatisfied after total knee arthroplasty (TKA), prompting the development of new implants. Bi-Cruciate Retaining (BCR) TKA preserves both the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL), with the ACL beneficial for its proprioceptive qualities. The Bi-Cruciate Stabilised (BCS) TKA substitutes the ACL and PCL with a unique dual cam-post mechanism.

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Osteoarthritis (OA) is a major clinical challenge, and effective disease-modifying drugs for OA are still lacking due to the complicated pathology and scattered treatment targets. Effective early treatments are urgently needed to prevent OA progression. The excessive amount of transforming growth factor β (TGFβ) is one of the major causes of synovial fibrosis and subchondral bone sclerosis, and such pathogenic changes in early OA precede cartilage damage.

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There is no mouse model of patellar tendinopathy. This study aimed to establish a mouse inflammatory and degenerative patellar tendon injury model, which will facilitate research on patellar tendinopathy using advanced molecular tools including transgenic models. Collagenase at different doses (low dose (LD), medium dose (MD), high dose (HD)) or saline was injected over the mouse patellar tendon.

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Background: The goal of anterior cruciate ligament reconstruction (ACLR) is to restore the preinjury level of knee function to return to play (RTP). However, even after completing the rehabilitation programme, some patients may have persistent quadriceps muscle weakness affecting knee function which ultimately leads to a failure in returning to play. Vitamin D has been long recognized for its musculoskeletal effects.

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Background: Glenoid bone loss is a risk factor leading to the failure of arthroscopic Bankart repair. While 20-25% glenoid bone loss has long been considered the level to necessitate bony augmentation, recent studies indicate that 13.5% has a "subcritical" glenoid bone loss level, which is associated with decreased short- and medium-term functional scores.

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Background: This study aimed to investigate the correlations of serum vitamin D insufficiency with quadriceps neuromuscular function in patients with anterior cruciate ligament (ACL) injury.

Methods: A cross-sectional study was conducted. Eighteen patients with a primary, unilateral ACL injury who had insufficient serum vitamin D concentrations (<30 ng/ml) were recruited for the study.

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Background: Previous studies have shown isokinetic exercise forms an important part in reconditioning the patients after anterior cruciate ligament reconstruction (ACLR) in regaining muscle strength and knee function. Although eccentric isokinetic training has been shown to enhance quadriceps muscle strength, the application toward benefiting patients after ACLR remains controversial. The present study aims to investigate the benefits of eccentric over concentric isokinetic exercises on knee muscle strength and its value in later stage of rehabilitation, including the return-to-sport.

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Rationale: Patients with anterior cruciate ligament (ACL) reconstruction often have poor adherence to post-surgery rehabilitation.

Objective: This study applied the integrated model of self-determination theory and the theory of planned behavior to examine the effects of a smartphone-delivered intervention on the recovery outcomes of patients with an ACL rupture during post-surgery rehabilitation period. Additionally, we explored the effects of the intervention on participants with different beliefs toward rehabilitation at baseline.

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