Anterior-posterior (AP) X-ray of the left shoulder demonstrating an anterior glenohumeral joint dislocation accompanied by an associated fracture. The humeral head (labeled C) is displaced anteriorly and inferiorly relative to the glenoid fossa (labeled D), appearing medially beneath the coracoid process. An avulsion fracture of the greater tuberosity is visible (labeled A and B), appearing as a cortical fragment separated from its original anatomical position on the proximal humerus. The diagnostic image highlights key orthopedic pathology including joint space widening, loss of normal articulation, and traumatic osseous injury. This visual is significant for medical education regarding shoulder trauma, dislocation classifications, and the identification of associated fractures in surgical and emergency medicine contexts.

This diagnostic image is a preoperative anteroposterior (AP) X-ray of the right shoulder in a 30-year-old patient. The radiograph demonstrates a significant anterior and medial dislocation of the glenohumeral joint. Key anatomical landmarks are highlighted: yellow arrows point to the empty glenoid cavity of the scapula, while black arrows indicate the displaced humeral head. The humeral head is positioned medially and slightly inferiorly to the glenoid fossa, resting in a subcoracoid position. There is a complete loss of articular congruence between the humeral head and the glenoid. This chronic presentation (three months post-injury) highlights the typical radiological appearance of a neglected shoulder dislocation. The image serves as an educational example for orthopedic trauma and radiology, illustrating joint disruption, displacement patterns in anterior shoulder instability, and the visual assessment of glenohumeral alignment.

This anterior-posterior (AP) X-ray radiography shows an anterior dislocation of the right glenohumeral joint. The image demonstrates a loss of normal anatomical congruity between the proximal humerus and the scapula. Specifically, the humeral head (labeled A) is displaced inferiorly and medially relative to the glenoid fossa (labeled B), characteristic of an anterior subcoracoid dislocation. Key anatomical structures visible include the right clavicle, the acromion process, the coracoid process, and the upper rib cage. No acute cortical fractures or bony defects are clearly demarcated in this view. This diagnostic image serves as a clinical example of common shoulder trauma and illustrates the spatial relationship disruption between the glenoid and the humerus used to confirm joint instability. It is an essential resource for medical education regarding musculoskeletal radiology and orthopedic emergency management.

Anteroposterior (AP) X-ray radiographs of the right (R) and left (L) shoulders demonstrating bilateral anterior glenohumeral dislocations. In both views, the humeral heads are displaced anteriorly and inferiorly relative to the glenoid fossa. On the right shoulder, an arrow highlights a concomitant fracture of the greater tuberosity, characterized by a cortical disruption and slight displacement of the bone fragment. On the left shoulder, an arrow indicates the malpositioned humeral head beneath the coracoid process, consistent with subcoracoid dislocation. This clinical presentation is frequently associated with high-energy trauma or generalized tonic-clonic seizures. The images serve as an educational example of complex orthopedic injuries and the importance of checking for associated fractures in the setting of shoulder dislocations.

This diagnostic image is an anteroposterior (AP) X-ray of the left shoulder girdle. It illustrates the primary anatomical structures of the glenohumeral joint, including the humerus, scapula (acromion process and glenoid fossa), and clavicle, with the adjacent rib cage and lung field visible in the medial aspect. The radiograph demonstrates a classic anterior shoulder dislocation, characterized by the displacement of the humeral head anteriorly and inferiorly relative to the glenoid fossa. A yellow annotation arrow is positioned at the vacated glenoid rim, highlighting the misalignment where the humeral head has lost its normal anatomical articulation. The bone density appears preserved, with no immediate evidence of associated fractures such as a Hill-Sachs or Bankart lesion visible in this view. This image serves as a clinical teaching tool for medical students and clinicians to identify acute traumatic joint instability and the radiographic presentation of glenohumeral misalignment.

Anterior-posterior (AP) X-ray of the right shoulder and proximal humerus showing postoperative changes following a Latarjet procedure. The glenohumeral joint is well-reduced with anatomic alignment of the humeral head and glenoid fossa. A single metallic cannulated screw with a washer is visible, fixating the coracoid process graft to the anteroinferior glenoid rim to address anterior shoulder instability. The clavicle and acromioclavicular joint appear intact. Along the mid-diaphysis of the humerus, there is a localized area of cortical thickening and increased bone density, possibly representing a healed fracture or chronic stress response. The adjacent rib cage and apical lung field are unremarkable. This image demonstrates the surgical management of chronic anterior shoulder dislocation through coracoid transfer.

Two side-by-side axial T2-weighted or proton density fat-saturated MRI scans of the shoulder demonstrating the progression of a reverse Hill-Sachs lesion (RHSL) and posterior glenohumeral instability. Image (a) shows the immediate posttraumatic state, characterized by an acute impaction fracture of the anterior humeral head (reverse Hill-Sachs defect) and a concomitant posterior bony Bankart lesion. Image (b) shows the same joint after 5 years of conservative treatment. Comparison reveals morphological changes: the reverse Hill-Sachs defect demonstrates a decrease in depth and filling, likely through fracture hematoma consolidation and cortical remodeling. The posterior bony Bankart lesion shows signs of consolidation. However, both images demonstrate persistent static posterior glenohumeral decentering, where the humeral head remains abnormally positioned posteriorly relative to the glenoid fossa. This visual progression is clinically significant for evaluating the outcomes of conservative management in posterior shoulder instability and the risk of developing posterior decentering osteoarthritis.

**Imaging Modality:** Magnetic Resonance Imaging (MRI) **Anatomical Region:** Right shoulder (glenohumeral joint) **View:** Axial section **Observed Pathology:** The image demonstrates signs of chronic anterior shoulder instability. There is evidence of a **Bankart lesion**, characterized by a disruption or fracture of the anterior-inferior glenoid labrum/rim. This is accompanied by a **Hill-Sachs deformity**, visible as a cortical depression or flattening of the posterolateral aspect of the humeral head. **Characteristic Visual Features:** - **Bankart Lesion:** Loss of the normal triangular low-signal intensity of the anterior labrum, with associated irregularity of the glenoid margin. - **Hill-Sachs Lesion:** A wedge-shaped defect in the humeral head, resulting from forceful impaction against the glenoid during an anterior dislocation event. - **Joint Space:** The relationship between the humeral head and the glenoid fossa is visualized, showing post-traumatic structural changes. **Clinical Context:** These findings are pathognomonic for recurrent anterior glenohumeral dislocations. The combination of the bony/labral Bankart and the Hill-Sachs lesion represents the "bipolar" nature of many instability-related injuries. **Key Diagnostic Features:** - Anterior-inferior glenoid rim disruption. - Posterolateral humeral head impaction fracture. - Presence of these dual osseous/cartilaginous defects in a patient with a history of shoulder instability.

**Imaging Modality:** Magnetic Resonance Imaging (MRI) **Anatomical Region:** Right shoulder girdle, specifically the glenohumeral joint. **Observed Pathology and Visual Features:** This axial T2-weighted or proton density (PD) MRI sequence demonstrates characteristic findings of post-traumatic glenohumeral instability: * **Hill-Sachs Deformity:** A distinct cortical depression and bone marrow signal abnormality are visible on the posterolateral aspect of the humeral head, representing a compression fracture. * **Bankart Lesion:** There is evidence of disruption or tearing of the anteroinferior glenoid labrum, accompanied by irregularity of the adjacent glenoid rim. * **Joint Space:** Mild joint effusion or intra-articular fluid is present, outlining the glenohumeral structures. * **Soft Tissues:** The surrounding deltoid musculature and subcutaneous tissues appear intact, though minor perivascular or interstitial edema may be present. **Clinical Context:** The combination of a Hill-Sachs lesion and a Bankart lesion is highly indicative of prior anterior glenohumeral dislocation. **Diagnostic Significance:** These findings are critical for indexing cases of recurrent shoulder instability and preoperative planning for capsulolabral repair (e.g., Bankart repair) and assessing the risk of future subluxation events.

This clinical photograph shows the anterior view of a standing male patient one year following a bilateral open Latarjet procedure for recurrent shoulder dislocation. The patient is demonstrating active shoulder abduction, achieving a full range of motion (approximately 180 degrees) with both arms extended vertically overhead. The image illustrates a successful postoperative functional outcome following surgical stabilization for anterior shoulder instability, Bankart lesions, and Hill-Sachs defects. The patient exhibits a mesomorphic physique with well-healed surgical sites in the deltopectoral regions. This visual serves as a clinical assessment of joint mobility and muscle function in the context of orthopedic rehabilitation and sports medicine. Key educational concepts include the evaluation of postoperative glenohumeral stability and the restoration of athletic function in high-demand patients.

Arthroscopic views of a combined Bristow-Latarjet-Bankart procedure for recurrent anterior shoulder instability. Image A (intra-articular view) shows a coracoid bone graft positioned in a 'standing' orientation, fixed flush with the glenoid surface to restore bone loss; the graft is secured with a cortical screw. Image B demonstrates the associated capsulolabral repair (Bankart repair) where suture anchors are used to reattach the labrum over the bone block, moving the graft to an extra-articular position and enhancing glenoid concavity (bumper effect). Image C (extra-articular view) visualizes the transferred conjoined tendon passing through a split in the subscapularis muscle to provide a dynamic 'sling' or 'belt' effect, reinforcing the anteroinferior capsule. This '2B3' triple-locking technique combines osseous restoration, dynamic soft tissue reinforcement, and labral repair to stabilize the glenohumeral joint.

This diagnostic image is an intra-articular arthroscopic photograph of a left shoulder joint, captured from the posterior viewing portal. The image demonstrates the final result of a standard Bankart repair, an orthopedic procedure used to treat anterior shoulder instability. The primary anatomical structures are labeled: the glenoid (G) on the right and the humeral head (HH) in the lower-left. The labrum, specifically the fibrocartilaginous rim, is visible and labeled in the center, appearing re-attached and tensioned against the glenoid rim. Three suture anchors are strategically placed along the anterior-inferior glenoid rim at approximately the 7, 8, and 9 o'clock positions. The educational focus is the visual confirmation of the 'labral bumper effect' and the tensioning of the capsuloligamentous structures. This clinical imaging illustrates surgical management for recurrent shoulder dislocation and labral tears within the field of sports medicine and orthopedic surgery.

This composite figure illustrates the 50-month post-operative outcomes of a patient following a Latarjet procedure for recurrent shoulder dislocation. Panels A-D display multi-modal diagnostic imaging of the right shoulder: (A) An anteroposterior radiograph showing glenohumeral osteoarthritis and surgical hardware; (B-C) Sagittal and axial CT scans demonstrating successful coracoid bone graft transfer and integration into the anterior glenoid rim; (D) A coronal T2-weighted MRI where white arrowheads indicate the structural integrity of the repaired supraspinatus tendon. Panels E-I are clinical photographs assessing functional recovery and active range of motion: (E) Shoulder flexion reaching 120 degrees; (F) External rotation to 30 degrees; (G) Functional ability to reach the hand behind the head with the elbow back; (H) Internal rotation to the level of the fifth lumbar spine; and (I) The patient demonstrating weight-bearing capability by standing independently from a wheelchair. The collection serves as an educational example of managing complex shoulder instability through bone block reconstruction and rotator cuff repair in a patient with hemiplegia.

Intraoperative arthroscopic clinical photograph demonstrating the final appearance of a shoulder joint following an anterior and posterior capsular shift with Bankart repair. The image showcases the glenohumeral joint space where light-colored, creamy-white soft tissue, primarily the joint capsule and labrum, appears smooth and glistening. Key surgical features include blue synthetic sutures embedded within the tissue margins, indicating the successful plication and stabilization of the redundant capsule. The fold of tissue in the upper right quadrant reflects the tightened capsular volume intended to address multidirectional instability. This visual is significant for illustrating orthopedic surgical techniques for recurrent shoulder dislocation and instability, specifically highlighting tissue approximation and the structural outcomes of a capsulolabral reconstruction.

Two-panel postoperative radiographic study of the right shoulder demonstrating successful Bristow-Latarjet-Bankart procedure for recurrent anterior shoulder instability. Panel A is an anteroposterior (AP) view showing a coracoid bone graft fixated to the anteroinferior glenoid rim with a single radiopaque orthopedic screw. The graft is positioned optimally below the glenoid equator and flush with the articular surface. Panel B is a lateral (Bernageau) or scapular Y-view, illustrating the horizontal trajectory of the fixation screw through the bone block into the glenoid neck. There is visible evidence of osseous integration and bone healing between the transferred coracoid process and the native glenoid. The humeral head is centered within the glenohumeral joint, indicating restored stability and the successful recreation of the glenoid's concave architecture. This visual serves as an educational example of ideal bone block positioning to address severe glenoid bone deficiency.

This diagnostic radiograph (X-ray) of the left shoulder in an anteroposterior (AP) view demonstrates an anterior-inferior glenohumeral dislocation. The humeral head is displaced from the glenoid fossa and is positioned medially and inferiorly. A key educational feature is the Hill-Sachs lesion, a compression fracture of the posterolateral humeral head, which is highlighted with a blue arrow and a yellow outline indicating the cortical depression. This lesion typically occurs when the humeral head impacts the anterior glenoid rim during dislocation. Additionally, a small radio-opaque fragment is outlined in yellow near the medial aspect of the joint, suggestive of a possible bony Bankart lesion or a loose fracture fragment. The image serves as a clinical example of trauma-induced shoulder instability and associated secondary fractures, which are critical for surgical planning and risk assessment for recurrent dislocations in orthopedics.

This diagnostic image is a CT scan in a sagittal view focused on the humeral head of the shoulder. It demonstrates a Hill-Sachs lesion, which is a posterolateral compression fracture of the humeral head typically resulting from anterior shoulder dislocation. The image shows a cortical depression or defect on the posterior-superior aspect of the bone. A green solid line spans the edge of the indentation to measure the length of the lesion, which is an important clinical parameter in determining shoulder instability and surgical planning (on-track versus off-track lesions). The high-contrast bone appears bright against the surrounding darker soft tissues, highlighting the altered morphology of the articular surface. This visual aid is intended for intermediate to advanced orthopedic or radiological education regarding the quantification of glenohumeral joint trauma.

This diagnostic image is a conventional plain film radiograph (X-ray) of the human shoulder, specifically focusing on the humeral head. The image demonstrates a close-up view of the proximal humerus and its articulation with the glenoid. A prominent white arrow points to a localized bony protuberance on the postero-superior aspect of the humeral head. This finding represents a variation of a Hill-Sachs lesion, which is typically a compression fracture or depression following an anterior shoulder dislocation. In this specific case, the lesion appears paradoxically as an 'osteophyte-like' outward projection rather than a cortical indentation. This visual phenomenon occurs when the X-ray beam is tangent to the elevated, hypertrophic margin of the bony defect. The image illustrates a critical diagnostic pitfall in musculoskeletal radiology, where the morphology of a Hill-Sachs lesion can be misinterpreted based on the radiographic projection. The internal trabecular pattern and cortical density of the humeral head are well-preserved, highlighting the focal nature of the contour abnormality at the postero-superior head-neck junction.