William Breidahl

William Breidahl
Perth Clinic · Perth Radiological Clinic

MBBS MRCP FRANZCR

About

81
Publications
14,692
Reads
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3,023
Citations
Citations since 2016
16 Research Items
1087 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Introduction

Publications

Publications (81)
Article
PurposeTo compare the clinical and radiological outcomes in patients undergoing anterior cruciate ligament reconstruction (ACLR) with, or without, LARS augmentation.Methods One-hundred and thirty-six patients that underwent double-bundle ACLR with (DB Hams/LARS, n = 67), or without (DB Hams, n = 69), LARS augmentation, were assessed clinically and...
Article
Full-text available
Background Rotator Cuff (RC) tendon tearing is a common clinical problem and there is a high incidence of revision surgery due to re-tearing. In an effort to improve patient outcome and reduce surgical revision, scaffolds have been widely used for augmentation of RC repairs. However, little is known about how scaffolds support tendon stem cell grow...
Chapter
Autologous tenocyte implantation (ATI) is indicated for chronic severe lateral epicondylitis (LE) in patients who have previously undergone unsuccessful nonsurgical treatment. ATI is a two-stage procedure that involves initial patellar tendon biopsy followed by a single injection of cultured autologous tenocytes to the LE lesion under ultrasound gu...
Article
Background Hip abductor tendon repair has demonstrated encouraging outcomes. The influence of fatty infiltration (FI) on outcome has not been explored. Purpose To investigate the association between preoperative hip abductor FI and clinical outcome after hip abductor tendon repair. Study Design Case series; Level of evidence, 4. Methods A total...
Article
Introduction: Anterior shoulder dislocations are a common injury in many sports resulting in extended time lost from play with an extremely high recurrence rate in young athletes playing high risk sport. Latarjet shoulder reconstruction is a common surgical procedure used to prevent subsequent dislocation with an expected rehabilitation timeframe...
Article
Background: Despite the popularity of minimally invasive approaches in total hip arthroplasty, studies regarding their impact on soft tissues and long-term benefits are lacking. This study aims to compare the 10-year functional outcome of the piriformis-sparing minimally invasive approach to the standard posterior approach for total hip arthroplas...
Article
Full-text available
Background: Ultrasonography may have potential as an effective diagnostic tool for deep tissue injury (DTI) in tissues overlying bony prominences that are vulnerable when under sustained loading in sitting. Methods: Three cases of DTI in the fat and muscle layers overlying the ischial tuberosity of the pelvis in 3 persons with spinal cord injury (S...
Conference Paper
Full-text available
Introduction Within an AFL season, each club will on average have up to two players experience a shoulder dislocation. For some players this is a season ending injury, at best up to 12 games missed. Latarjet reconstruction is a surgical option following dislocation, relying on stability from the transplanted coracoid process. Success rates vary fro...
Article
Background: Platelet-rich plasma (PRP) has been applied as an adjunct to rotator cuff repair to improve tendon-bone healing and potentially reduce the incidence of subsequent tendon retears. Purpose: To investigate whether the midterm clinical and radiographic outcomes of arthroscopic supraspinatus repair are enhanced after repeated postoperativ...
Article
Full-text available
Background: High strain in soft tissues that overly bony prominences are considered a risk factor for pressure ulcers (PUs) following spinal cord impairment (SCI) and have been computed using Finite Element methods (FEM). The aim of this study was to translate a MRI protocol into ultrasound (US) and determine between-operator reliability of expert...
Article
Cortical desmoids are self-limiting fibro-osseous lesions commonly occurring at the medial supracondylar femur in active adolescents, at either the origin of the medial head of the gastrocnemius or at the insertion of the adductor magnus aponeurosis. Less commonly, in a similar demographic, cortical desmoids may occur in the proximal humerus medial...
Article
Full-text available
Background: Gluteal tendinopathy is a common cause of lateral hip pain, and existing conservative treatment modalities demonstrate high symptom recurrence rates. Autologous tenocyte injection (ATI) is a promising cell therapy that may be useful for the treatment of gluteal tendinopathy. Purpose: To investigate the safety and effectiveness of ATI...
Article
Full-text available
Purpose: The purpose of this study is to examine the outcomes of a cohort of patients who have undergone a new surgical technique for anterior cruciate ligament (ACL) tunnel targeting using the footprint of the torn ACL as soft tissue markers. This is in the setting of anatomical ACLR with remnant preservation. Methods: This retrospective single ce...
Article
Full-text available
Purpose: This prospective case series is designed to determine the 2-year clinical and radiological outcomes of patients undergoing an ACL reconstruction using the ligament augmentation reconstruction system (LARS) 133 prosthesis as an augmentation device for a 4-tunnel autologous hamstrings graft, in the context of accelerated rehabilitation. Meth...
Article
Background: This study investigated if patients with an intact tendon repair or partial-thickness retear early after rotator cuff repair display differences in clinical evaluations and whether early tendon healing can be predicted using these assessments. Methods: We prospectively evaluated 60 patients at 16 weeks after arthroscopic supraspinatu...
Article
Full-text available
Graft hypertrophy is a common occurrence after periosteal, collagen-covered and matrix-induced autologous chondrocyte implantation (MACI). The purpose of this study was to investigate the incidence, development, and degree of graft hypertrophy at 24 months after MACI. The hypothesis was that graft hypertrophy would not be associated with clinical o...
Article
The purpose of this study was to document the existence of transverse cords in olecranon bursae in patients undergoing excision of the bursa and to describe the unique clinical presentation of patients with these cords. A retrospective study was performed on 24 patients who had surgery to excise an olecranon bursa between 2006 and 2011. The patient...
Article
Full-text available
Background Diffuse idiopathic skeletal hyperostosis (DISH, also known as Forestier's disease or ankylosing hyperostosis) is considered to be a noninflammatory skeletal disorder of unknown, but probably “degenerative” origin. NSAIDs can be helpful in those with appreciable pain and stiffness, but the benefits are often modest and may be limited by t...
Article
Chronic lateral epicondylitis (LE) induces cell apoptosis and autophagy, which lead to the reduction of tendon-derived cells in the torn tendon. Our previous study has shown that ultrasound-guided autologous tenocyte injection (ATI) to the torn tendon in patients with chronic resistant LE significantly improves pain, function, and structural repair...
Article
Full-text available
Background Partial thickness supraspinatus tears and tendonosis can be managed either nonoperatively or by various arthroscopic techniques. New biologic treatment approaches are currently being investigated. MRI is commonly used for objective imaging outcome evaluation but there is a lack of reliability studies. We propose a novel MRI classificatio...
Article
Full-text available
Abstract Background: Gluteal tendinopathy is a common cause of lateral hip pain, and existing conservative treatment modalities demonstrate high symptom recurrence rates. Autologous tenocyte injection (ATI) is a promising cell therapy that may be useful for the treatment of gluteal tendinopathy. Purpose: To investigate the safety and effectivenes...
Article
Full-text available
Introduction: Hip abductor insufficiency is often associated with lateral hip pain, movement disorder and Trendelenburg gait. The aims of this study are to predict if preoperative radiological findings correlate with postoperative outcomes and if pre and postoperative radiological findings correlate with postoperative function. Methods: Patients...
Article
Objectives: To help clinicians understand the clinical relevance of subacromial bursa (SAB) thickness on ultrasound investigations in marathon swimmers. Design: A prospective, observational cohort study. Methods: Twenty two open-water marathon swimmers entered in a 19.7km open-water event received comprehensive, bilateral, shoulder ultrasounds...
Article
To assess the MRI findings of musculoskeletal lymphoma primarily presenting clinically as a bone lesion or soft tissue mass. Magnetic resonance imaging of 23 cases of musculoskeletal lymphoma were retrospectively reviewed. Features assessed included tumour location, morphology, signal intensity (SI) characteristics, cortical destruction, involvemen...
Chapter
The arthropathy of haemochromatosis is relatively common even in patients with hereditary haemochromatosis (HH) recruited from the community. It is a chronic, progressive arthropathy with a level of inflammatory activity that is both clinically and histopathologically intermediate between that of rheumatoid arthritis and osteoarthritis. There is a...
Chapter
The arthropathy of haemochromatosis is relatively common even in patients with hereditary haemochromatosis (HH) recruited from the community. It is a chronic, progressive arthropathy with a level of inflammatory activity that is both clinically and histopathologically intermediate between that of rheumatoid arthritis and osteoarthritis. There is a...
Article
Full-text available
BACKGROUND:Severe chronic lateral epicondylitis (LE) is associated with degenerative tendon changes, extracellular matrix breakdown, and tendon cell loss. On the basis of positive outcomes from preclinical studies, this study is the first clinical trial of autologous tenocyte injection (ATI) on severe tendinopathy associated with chronic LE. HYPOTH...
Article
Full-text available
Purpose ‘Clinical cyclops syndrome’ is associated with pain and a palpable ‘clunk’ at terminal extension with the loss of full extension. The aims of this prospective controlled study were: (1) to assess whether the minimal debridement of the ACL stump and notch is associated with an increased incidence of clinical cyclops lesions, (2) to look at t...
Article
Full-text available
Tendinopathy and small partial-thickness tears of the rotator cuff tendon are common presentations in sports medicine. No promising treatment has yet been established. Corticosteroid injections may improve symptoms in the short term but do not primarily treat the tendon pathology. Ultrasound-guided autologous tenocyte implantation (ATI) is a novel...
Article
Hereditary Haemochromatosis is a common inherited disorder, which primarily affects populations of northern European origin. Individuals homozygous for the C282Y mutation in the HFE gene product have up to a 30 percent chance of developing significant disease as a result of iron overload. Arthropathy is arguably the most disabling complication of i...
Article
The aim of this study was to compare the muscle grade and bulk of the divided and repaired piriformis tendon by the standard posterior approach with the preserved tendon by a piriformis-sparing (PS) approach, in total hip arthroplasty. Twenty-two patients were randomized to either approach. Patients received preoperative and 3 months and 2 years po...
Article
Full-text available
There is no ideal treatment for younger patients with medial knee osteoarthritis (OA) and varus malalignment. We have investigated the first case series of combined neutralising high tibial osteotomy (HTO) and Matrix-induced Autologous Chondrocyte Implantation (MACI) with MRI. Treatment goals were clinical improvement and delay of arthroplasty. Bet...
Article
Lateral epicondylitis is a painful condition affecting the proximal enthesis of the extensor carpi radialis brevis tendon. Although magnetic resonance imaging (MRI) has been highlighted as an important diagnostic tool, to our knowledge no previous study has established the observer reliability of MRI for lateral epicondylitis or the relationship be...
Article
To determine the frequency and character of arthropathy in hereditary hemochromatosis (HH) and to investigate the relationship between this arthropathy, nodal interphalangeal osteoarthritis, and iron load. Participants were recruited from the community by newspaper advertisement and assigned to diagnostic confidence categories for HH (definite/prob...
Article
Muscle injuries of the lower leg are a common cause for time off from sports, and may also be a cause of disability in nonathletes who have a running or "pushing off" injury as part of their activities of daily living. Most injuries can be managed without imaging, but in selected cases advanced imaging techniques can demonstrate the exact site and...
Article
Full-text available
Teres minor atrophy occurs either in isolation, associated with other rotator cuff muscle pathologies or in quadrilateral space syndrome. In the latter condition, compression of the axillary nerve is the likely cause; however, the anatomy of the nerve to teres minor and how this may relate to isolated teres minor atrophy have not been extensively i...
Article
Previous studies of patients with primary hand and ankle osteoarthritis (OA) have suggested the presence of two major polyarticular OA (POA) phenotypes, designated Type 1 and Type 2. The former, characterised by sentinel distal interphalangeal (IP) (DIP) or proximal IP (PIP) joint OA resembles generalised OA (GOA), whereas the latter characterised...
Article
Two complementary studies that seek to establish the relationship between the length and position of the trans-epicondylar axis (TEAL) of the distal femur and the position of the knee joint line were presented. A radiologic study of 50 patients having computerized axial tomography of the knee showed that there is a good correlation between TEAL and...
Article
Full-text available
Animal studies have shown that implanted anterior cruciate ligament (ACL) grafts initially undergo a process of revascularisation prior to remodelling, ultimately increasing mechanical strength. We investigated whether minimal debridement of the intercondylar notch and the residual stump of the ruptured ACL leads to earlier revascularisation in ACL...
Article
Both diagnostic ultrasound and magnetic resonance imaging (MRI) are used for investigation of the presence and severity of rotator cuff lesions. There is no consensus as to which is the more accurate and cost-effective study. We sought to examine the sensitivity of ultrasound, when used by one experienced radiologist with modern equipment. We compa...
Article
Plantar fasciitis is a clinical diagnosis and is often combined with some form of imaging to validate the diagnosis. The clinical utility of lateral X-rays lies in the fact that they are relatively inexpensive and may contribute to ruling out other osseous causes of pain. In this study 106 (27 plantar fasciitis (PF) and 79 controls) plain non-weigh...
Article
Full-text available
We describe a case of highly refractory synovial chondromatosis, which recurred despite four arthroscopic synovectomies, a chemical synovectomy, two open synovectomies and an arthrodesis. A review of the literature revealed one similar case. Both presented with marked joint stiffness suggesting a poor prognosis. Although arthrodesis may relieve sho...
Article
A patient with a history of colon carcinoma and computed tomography (CT) evidence suggestive of a liver metastasis underwent an F-18 FDG PET scan. The PET scan confirmed a metastasis in the left lobe of the liver. The study also demonstrated bilateral symmetric uptake involving the inferior subscapular regions. Correlation with the previous CT show...
Article
Previous studies have evaluated reliability and validity of clinical measurements of femoral and tibiofibular torsion, however, the results are conflicting, warranting an alternative method. The authors developed modified methods of measuring femoral and tibiofibular torsion using different reference axes, and validity and reliability of the modifi...
Article
Question: In patients having knee arthroplasty, is computer-assisted knee arthroplasty (CAKA) more effective than a conventional jig-based technique? Design: Randomized (allocation concealed), blinded (outcome assessor and statistician), controlled trial with 6-week follow-up. Setting: A hospital in Perth, Western Australia, Australia. Patients:...
Article
Advanced imaging techniques such as computed tomography, ultrasound, and magnetic resonance imaging provide clinically useful information by detecting and characterizing pathologic conditions of the elbow. The information provided by these techniques can help establish an anatomic diagnosis in a noninvasive fashion. A timely and accurate imaging di...
Article
Full-text available
A controlled study, comparing computer- and conventional jig-assisted total knee replacement in six cadavers is presented. In order to provide a quantitative assessment of the alignment of the replacements, a CT-based technique which measures seven parameters of alignment has been devised and used. In this a multi-slice CT machine scanned in 2.5 mm...
Article
Full-text available
A controlled study, comparing computer- and conventional jig-assisted total knee replacement in six cadavers is presented. In order to provide a quantitative assessment of the alignment of the replacements, a CT-based technique which measures seven parameters of alignment has been devised and used. In this a multi-slice CT machine scanned in 2.5 mm...
Article
Full-text available
We have compared a new technique of computer-assisted knee arthroplasty with the current conventional jig-based technique in 70 patients randomly allocated to receive either of the methods. Post-operative CT was performed according to the Perth CT Knee Arthroplasty protocol and pre- and post-operative Maquet views of the limb were taken. Intra-oper...
Article
We have compared a new technique of computer-assisted knee arthroplasty with the current conventional jig-based technique in 70 patients randomly allocated to receive either of the methods. Post-operative CT was performed according to the Perth CT Knee Arthroplasty protocol and pre- and post-operative Maquet views of the limb were taken. Intra-oper...
Article
Objective: We describe the imaging appearances of an injury complex occurring in the skeletally immature patient consisting of an avulsion fracture of the subscapularis attachment to the lesser tuberosity and avulsion of the inferior glenohumeral ligament (HAGL) which in two cases was associated with a bony fragment (BHAGL). Conclusion: MR imagi...
Article
This study draws attention to the association between intramuscular fluid collections occurring at the myo-tendinous junction of the rotator cuff secondary to longitudinal tears of their tendons.
Article
Toxic osteoblastoma is a rare variant of an uncommon primary bone tumour that has been described only once before in the world medical literature. It is characterised by systemic features including fever, weight loss and a striking diffuse periostitis in association with an osteoblastoma, resulting in delayed diagnosis. Early recognition of this co...
Article
The twist CT has been advocated as a useful diagnostic tool for determining lumbar segment instability. According to this test, facet joints showing wide separation on lumbar spine rotation are believed to be pathological. However, no reports have presented the reliability of measuring facet joint separation from clinical twist CT films, nor tested...
Article
Toxic osteoblastoma is a rare variant of an uncommon primary bone tumour that has been described only once before in the world medical literature. It is characterised by systemic features including fever, weight loss and a striking diffuse periostitis in association with an osteoblastoma, resulting in delayed diagnosis. Early recognition of this co...
Article
The aim of this study was to evaluate the ability of power Doppler sonography to distinguish between hypoechoic fluid and synovium in patients with suspected tenosynovitis. Gray scale sonography and power Doppler sonography were performed on 26 tendons in 24 patients with tenosynovitis and 30 tendons in five asymptomatic volunteers. Peritendinous b...
Article
Full-text available
Mesenchymal chondrosarcomas (MSCs) are a rare form of chondrosarcoma which usually arise in bone. Extraskeletal chondrosarcomas constitute a minority (14-25%) of MSCs. We describe the imaging features of an extraskeletal mesenchymal chondrosarcoma that arose from the rectus abdominus muscle.
Article
Full-text available
The aim of this study was to demonstrate the use of ultrasound guidance in confirming intralesional injection of corticosteroids and local anesthetic into symptomatic ganglia, and to propose potential advantages of this technique. Ten patients (five men, five women) underwent ultrasound-guided injection of a ganglion. Seven ganglia were near the wr...
Article
Full-text available
Power Doppler sonography is a relatively new technique that has been shown to depict hyperemia associated with musculoskeletal inflammatory disease. We performed this study to evaluate the ability of power Doppler sonography to differentiate musculoskeletal fluid collections of varying etiologies. Gray-scale and power Doppler sonography were perfor...
Article
We present a case of plasma cell granuloma involving the dura mater with infiltration of the adjacent brain parenchyma. The radiological and pathological features of this entity are described.
Article
Two adults with bizarre parosteal osteochondromatous proliferation of the hands and feet are presented. The pre-operative diagnosis may be difficult to make and the correct diagnosis was not made in either case until pathological examination of recurrent tumour masses occurred. The radiological and pathological features of this lesion are discussed...
Article
Five cases of retroperitoneal lymphangioma are presented. In three patients the lesions were symptomatic, with resolution of the symptoms following resection. In two elderly patients the lesions were asymptomatic. Ultrasound demonstrated masses that ranged from 4 to 15cm in maximal extent, and which were predominantly anechoic. Two contained septat...
Article
Segmental variations in vertebral body cancellous bone architecture throughout the thoracolumbar spine were examined using histomorphometry and microradiography, and compared to bone mass measured using dual energy X-ray absorptiometry. In six human vertebral columns (T1 to L5) bone mineral content (BMC) and bone mineral density (BMD) of each verte...