Items tagged “cases”

The tibiocalcaneus internus muscle is a rare accessory muscle of the ankle and an anatomical variant with an unknown prevalence. Summary origin: medial crest of the lower third of the tibia insertion: medial surface of the calcaneus approximately 1-2 cm anterior to the Achilles tendon Gross ...

The coiled catheter sign is sometimes seen in transitional cell carcinoma of the ureter. When a retrograde ureteropyelogram is attempted in the afflicted ureter, the catheter tip is seen to coil in the dilated portion of the ureter distal to the obstruction 1. 

Lumbar interbody fusion is a common technique that aims for osseous fusion after discectomy.  There are anterior and posterior approaches (relative to the transverse process), some of which require additional instrumentation, and none of which have been demonstrated to be clinically superior wi...

Posterolateral lumbar fusion is an alternative technique to lumbar interbody fusion and can be a primary procedure or performed after lumbar laminectomy for spinal decompression to aid in stability after disruption of the posterior tension band. Posterior instrumentation via pedicle screws and r...

Cullen sign refers to superficial edema visible as periumbilical discolouration and is most commonly seen in patients with acute pancreatitis 1-3. Clinical presentation Clinically patients with pancreatitis present with epigastric pain that radiates to the umbilical/periumbilical region and th...

Cervical disc arthroplasty is a procedure involving the replacement of degenerative cervical intervertebral discs with artificial discs to enable decompression of the cervical spinal cord.   This procedure is an alternative to anterior cervical discectomy and fusion (ACDF) and avoids the loss o...

A laminotomy is a spinal decompression procedure with partial removal of the vertebral arch usually at its base. Laminotomies might be combined with other spinal procedures such as discectomy or spinal fusion procedures. If a laminotomy is combined with a foraminotomy, then the procedure is call...

Complications of spinal surgery are common and can occur at different time intervals after the surgery. Some of them are related to instrumentation, the procedure and/or the approach others are not. Anyhow, it is essential for the radiologist to be aware of them in the assessment of radiographs,...

In a medical sense, subsidence refers to the collapse or settling of bone located immediately next to an implantable device in direction of the loading force. It can lead to a loss of the desired postoperative result and to further complications 1. Epidemiology Associations Subsidence can be ...

Oblique lumbar interbody fusion (OLIF) is one of several techniques used in lumbar interbody fusion. It provides minimally invasive access to the disc space, passing between the peritoneum and the psoas muscles. Indications Indications for the procedure generally overlap with those of LLIF and...

Odontoid process fixation or odontoid process repair refers to the surgical fixation of an odontoid fracture. Anterior odontoid screw fixation is performed with single and double screw techniques, non-cannulated and cannulated screws, and uni- or bicortical fixation techniques. Odontoid plate ...

Ventilator-induced lung injury (VILI) is a type of acute lung injury usually inflicted or aggravated by mechanical ventilation. It may occur during invasive or non-invasive ventilation. Pathology The predominant mechanisms include: alveolar overdistention (volutrauma) / regional lung overdist...

Orthopedic implant or hardware failure refers to the failure of the implant to live up to its expected requirements with respect to the manufacturer's or the surgeon's allegations. This includes any complication directly related to the implant such as wear, fractures, dissociations and dislocati...

Implantation of interspinous devices is one option for treating lumbar canal stenosis and other causes of low back pain. These devices attempt to produce lumbar flexion by distracting the lumbar spinous processes restoring height and resulting in tightening of the thickened ligamentum flavum, an...

Spinal instrumentation hardware refers to various types of implants used for fixation in spinal surgery. They can be used in various combinations and include wires, clamps, screws, different plate-screw and rod-screw interfaces, intervertebral prostheses and disk replacements. Cervical spine in...

Posterior instrumentation and fusion is a surgical technique to improve spinal curvature in scoliosis patients. Procedure The vertebral column is manipulated into the desired position and held in place with metalwork namely pedicle screws and/or hooks transfixed with rods with or without in si...

Quadratus femoris injections under image guidance ensure precise delivery of an injectate and ensure the sciatic nerve is avoided during the procedure.  CT and ultrasound can be used, with ultrasound becoming more challenging in those with larger body habitus. Indications therapeutic for ischi...

Anectasis is a term that describes primary atelectasis, as distinct from secondary atelectasis. Anectasis refers to the failure of the lung to expand fully at birth. See also atelectasis

Implant malposition or hardware malposition refer to inappropriately positioned implants or hardware. It can be associated with various complications related to injury of adjacent structures. Terminology For implants with variant positions and no complications or increased risk, the term devia...

The flexor carpi radialis brevis (FCRB) vel profundus muscle is an accessory muscle of the forearm and wrist and a normal anatomical variant. Epidemiology The flexor carpi radialis brevis vel profundus muscle has been found in 2-8% of anatomical dissections 1-3. Summary origin: anterior surf...