Osteomyelitis is an important cause of morbidity and mortality in children and adults. Imaging plays a crucial role in establishing a timely diagnosis and guiding early management, with the aim of reducing long-term complications. Recognition of the imaging features of osteomyelitis requires a good understanding of its pathogenesis. In this review, the key imaging findings in osteomyelitis are correlated with the underlying pathological processes. There is a particular emphasis on magnetic resonance imaging (MRI), which is the best available imaging modality owing to its high sensitivity for detecting early osteomyelitis, excellent anatomical detail and superior soft tissue resolution. However, other modalities such as nuclear medicine and computed tomography (CT) are also useful in many clinical contexts, and will also be described in this review.
The purpose of this study was to describe and evaluate a new technique for ultrasound-guided percutaneous release of the annular pulley in trigger digit using a modified hypodermic needle. A total of 35 ultrasound-guided percutaneous releases were performed on 25 patients diagnosed and referred by hand surgeons in our institution over 16 months from October 2006. Inclusion criteria were as follows: adulthood, triggering present for at least 4 months, failure to respond to conservative management or steroid injections, no previous history of pulley release in the affected digit. Under ultrasound guidance, the affected pulley was released using a standard 19-gauge hypodermic needle bent at two points as the cutting device. Follow-up took place at 12 weeks and 6 months with improvement in triggering and clinically graded pain. At follow-up, no complications had occurred and all patients demonstrated improvement in their triggering, with complete resolution in 32 digits (91%), good improvement in 2 digits (6%) and some improvement in 1 digit (3%). This new technique uses a widely available and safe cutting device and is safe and can be used to provide definitive management for trigger finger, allowing the procedure to be performed in a variety of clinical settings.
Greater trochanteric pain syndrome (GTPS) is a commonly diagnosed regional pain syndrome with a wide spectrum of aetiologies, reflecting the anatomy of the structures outside the hip joint capsule. There are five muscle tendons that insert on to the greater trochanter and three bursae in the region of the greater trochanter. The term GTPS includes tendinopathies, tendinous tears, bursal inflammation and effusion. There are a range of treatments and therapies depending on the specific diagnosis and severity of the condition. Many patients with GTPS can be successfully managed conservatively with weight loss and non-steroidal anti-inflammatory drugs. Patients suffering from more chronic pain can receive varying degrees of symptomatic relief with lateral hip corticosteroid and local anaesthetic injections. More severe refractory cases of GTPS can be treated with surgical intervention. It is therefore important to make the correct diagnosis to ensure that appropriate management can be implemented. The clinical features of GTPS however are often non-specific because common conditions such as lumbar radicular pain and hip joint osteoarthritis can present with an almost identical form of lateral hip pain. The various diagnostic imaging modalities have particular strengths and weaknesses with ultrasound being the best first-line investigation due to its availability, low cost, dynamic nature and ability to guide treatments such as steroid injections. MRI can be very helpful in the further investigation of patients in whom there is diagnostic uncertainty as to the cause of lateral hip pain and in whom specialist orthopaedic referral is being considered.
There is a significant amount of underlying pathology that would normally go undetected in this group of asymptomatic elite athletes. Whilst these findings cannot be detected clinically, their relevance is in facilitating appropriate prehabilitation to prevent loss of playing time and potentially career-ending injuries.
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