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Method of obtaining Schuller's view. Schuller's view is a lateral radiographic view of skull principally used for viewing mastoid cells. [1] The central beam of X-rays passes from one side of the head and is at an angle of 25° caudad to the radiographic plate. This angulation prevents overlap of images of the two mastoid bones. The radiograph ...
Surgical positioning is the practice of placing a patient in a particular physical position during surgery. The goal in selecting and adjusting a particular surgical position is to maintain the patient's safety while allowing access to the surgical site. Often a patient must be placed in an unnatural position to gain access to the surgical site ...
The light bulb sign is best observed on an AP radiograph of the shoulder. [5] Key features include: Rounded humeral head: The humeral head appears symmetrically rounded, resembling a light bulb due to internal rotation. Loss of normal glenohumeral overlap: The humeral head is posteriorly displaced, disrupting the alignment with the glenoid cavity.
A dislocated shoulder is a condition in which the head of the humerus is detached from the glenoid fossa. [2] Symptoms include shoulder pain and instability. [ 2 ] Complications may include a Bankart lesion , Hill-Sachs lesion , rotator cuff tear , or injury to the axillary nerve .
Most image-guided surgical procedures are minimally invasive. A field of medicine that pioneered and specializes in minimally invasive image-guided surgery is interventional radiology. A hand-held surgical probe is an essential component of any image-guided surgery system as it provides the surgeon with a map of the designated area. [8]
While the Latarjet procedure can be used for surgical treatment of most cases of shoulder dislocations or subluxation, it is particularly indicated in cases with bone defects. [4] The failure rate following arthroscopic Bankart repair has been shown to dramatically increase from 4% to 67% in patients with significant bone loss. [ 5 ]
Traditional shoulder replacement (known as anatomic shoulder replacement) was developed to treat glenohumeral arthritis and consists of resurfacing the native humeral head and glenoid to create smooth articular surfaces to provide pain relief and improved range of motion. Variations of this procedure have been performed as early as 1883. [5]
C. X-ray source and detector for the lateral view D. Patient table with extensions (here shown in position for a hip surgery) E. Control unit with post-processing image software [10] and displays for the two perpendicular imaging planes X-ray detectors, the height of the stand and the angle of the G-Arm may be motorized or manually moved for ...