Dr Angela Cadogan
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In Defence of Imaging: When Less Isn't More

29/10/2025

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Introduction: Don't Blame the Scan
​
In recent years, a growing number of academic papers and social media narratives have raised concerns about rising imaging rates in musculoskeletal (MSK) care. The argument is familiar: imaging doesn’t help, causes harm, and fuels overmedicalisation by assigning labels that instill fear or lead to unnecessary interventions. (1, 2) 

Adding to the argument are studies showing that “abnormal” imaging findings such as disc degeneration or rotator cuff tears, are frequently present in people without symptoms. These findings are often used to recommend avoiding imaging in symptomatic individuals and to argue that similar findings in those with pain are often incidental or irrelevant.  (3-7) Some also claim that routine imaging fails to improve outcomes like pain, function, or satisfaction.(8) Taken together, these messages have driven a narrative that imaging is overused, harmful, and clinically invalid and should therefore be broadly avoided.(4)

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Measuring Up: Do Hand-Held Dynamometers and Force Plates Add Value to Shoulder Rehab?

17/11/2024

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Dr Angela Cadogan, PhD, NZRPS
​Specialist Physiotherapist (MSK)

Dr Angela Cadogan - Specialist Shoulder Physiotherapist - Diagnostic Expert and Educator - do hand held dynamometers add value in shoulder rehabilitation.  A blog highlighting the importance of clinical reasoning in an increasingly commercial and competitive environment.
Force measuring technology has been around for decades but has only recently become more affordable and accessible to the mass physiotherapy market. The ability to objectively measure force and track changes over time provides the patient with a source of motivation, takes the guess work out of manual strength testing, provides us with deeper insights into force production and provides funders with objective measures of progress.

​With increasing amounts of time and money being spent on equipment and collecting force data, maybe it’s a good time to pause and consider what value we are getting from these devices in our shoulder rehabilitation?

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From Referrals to Results: The Many Faces of Orthopaedic Triage

31/8/2024

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Dr Angela Cadogan, PhD, NZRPS
​Specialist Physiotherapist (MSK)
Dr Angela Cadogan - Specialist Shoulder Physiotherapist - Diagnostic Expert and Educator - A blog aiming to gain consensus and clarify what is meant by 'orthopaedic triage' in New Zealand.
"Orthopaedic triage" is becoming a common term in the world of physiotherapy and musculoskeletal care. As healthcare systems evolve to meet the rising demand for elective musculoskeletal and orthopaedic services, orthopaedic triage has found itself in the spotlight.

An increasing number of physiotherapists are working in “orthopaedic triage” roles in elective (non-acute) settings in both the private and public sector. Elective services include anything that is not urgent or emergent. In New Zealand, examples of elective orthopaedic services include community-based ACC funded ICP/ECP pathways, referrals to private orthopaedic services and referrals by GPs to elective orthopaedic services in the public hospital.
​But here’s the issue – the term “orthopaedic triage” doesn’t mean the same thing to everyone. Depending on where you work or who you talk to, "orthopaedic triage" can take on different meanings, leading to confusion and inconsistent practices. A shared understanding of what “orthopaedic triage” is in the elective setting is needed to help us prepare for these roles as they emerge.

In this post, we’ll take a look at what orthopaedic triage is (and isn’t), we’ll explore definitions and why these matter, and review the purpose of triage and some of the factors that shape it. 

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Is Virtual Reality a Useful Rehabilitation Tool for Shoulder Instability?

19/11/2022

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Virtual reality (VR) is an emerging technology that involves the interaction between a user and a computer with real time simulation of environments, functional activities, exercises and games. (Rutkowski et al., 2020). The definition of VR is based on the concept of “presence” which relates to the sense or feeling of being in an all-surrounding environment. There are currently 4 main types of VR:
  1. Non-immersive VR
  2. Immersive VR
  3. Augmented VR
  4. Mixed VR

Dr Angela Cadogan - Specialist Shoulder Physiotherapist - Diagnostic Expert and Educator - A blog exploring the current use of virtual reality for shoulder rehabilitation.

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Manual Therapy for Shoulder Pain: Trick or Treat(ment)?

19/9/2022

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Musculoskeletal physiotherapists have a therapeutic ‘bag of tricks’ that includes a range of interventions such as advice, pain science education, acupuncture, exercise and manual therapy to name a few. What turns a ‘trick’ into an effective ‘treatment’ is its application within a biopsychosocial framework, guided by clinical reasoning, informed by evidence within a person-centered, shared decision-making model of care.
Dr Angela Cadogan - Specialist Shoulder Physiotherapist - Diagnostic Expert and Educator - A blog exploring the value of manual therapy for musculoskeletal conditions.

Manual therapy as a “low-value” treatment
Manual therapy has been the subject of mounting criticism for being a passive, low value intervention that has potentially nocebic effects, that can create dependency, foster maladaptive beliefs and create unrealistic expectations of treatment. This assumes that manual therapy is applied indiscriminately, in isolation, without clinical reasoning or context. If that is the case, I would be the first to agree that manual therapy, and any other treatment applied in this way, literally becomes another ‘trick’ of the trade.

So what turns our manual therapy ‘tricks’ into an effective treatment for shoulder pain?

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Is X-Ray Needed in the Diagnosis of Frozen Shoulder?

25/6/2022

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Dr Angela Cadogan, PhD, NZRPS

Frozen shoulder is still poorly understood on many levels. However the diagnostic criteria for have remained unchallenged for decades: Frozen shoulder is a clinical diagnosis characterised by:
  1. a global loss of passive ROM
  2. a ‘normal’ x-ray (to exclude other causes of joint stiffness).

In my career, I have seen people diagnosed and treated for frozen shoulder for more than 2-3 years with a ‘wait and see’ approach, or with multiple injections without an x-ray to exclude other causes of stiffness.  Some of these people were subsequently diagnosed with osteoarthritis, avascular necrosis, and (one) posterior dislocation.  Other causes of shoulder pain and stiffness include primary or secondary bone tumour, traumatic, osteoporotic or pathologic fracture and muscle guarding.

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Clinical Insights: Tips for Assessing Complex Patients

1/5/2022

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A few weeks ago I wrote a post about the level of clinical competency required at specialist levels of physiotherapy practice which generated a bit of interest. I mentioned that my experience of working at this level (compared with other levels of practice) is the expectation that the specialist physiotherapist will have a solution we are others have failed. Often we are ‘expected to know’. 

In the previous post I discussed some of the factors that contribute to ‘complexity’. So how do I approach and interpret my assessment and make decisions about appropriate treatment given that many people I see have already had many investigations and treatment, often from very competent professionals?

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Shoulder Pain, Disability and Psychosocial Dimensions

26/3/2022

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Shoulder pain, disability and psychosocial dimensions: Profile of patients attending shoulder physiotherapy clinics.
 
White, R. J., Olds, M., Cadogan, A., Betteridge, S., & Sole, G. (2022). Shoulder pain, disability and psychosocial dimensions across diagnostic categories: Profile of patients attending shoulder physiotherapy clinics. New Zealand Journal of Physiotherapy, 50(1), 6–20. https://doi.org/10.15619/NZJP/50.1.02

Full text link: https://pnz.org.nz/Attachment?Action=Download&Attachment_id=2436

For me the most fulfilling part of any publication is the discussion and clinical applications where the rubber hits the road. There were so many interesting findings from this study. We've summarised a few of the key findings in this infographic. I've provided a few other reflections on the practicalities of collecting the data in the clinical setting here:

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    Dr Angela Cadogan

    Passionate about shoulders and helping others to think critically about their practice. I hope these posts stimulate your thinking.

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