No abstract available.
Shoulder Fractures*

No abstract available.
Shoulder Fractures*

No abstract available.
Shoulder Fractures

Hook plate fixation is a treatment method for the displaced distal clavicle fracture with favorable results regarding bone union and shoulder function, however possible complications include impingement syndromes, subacrormial erosions, acromial fractures, and periprosthetic fractures. In this report, we observed 3 cases of periprosthetic fracture after hook plate fixation. All cases of periprosthetic fractures were initiated at the medial end screw holes. The causes of these periprosthetic fractures appeared to be the off centered fixation of medial end screws near the anterior or posterior cortex which were specific during operations with hook plates with more than 6 holes and the increased stress on the medial end screw by over-reduced or inferiorly reduced position of the distal end of the clavicle by the hook plate.
Clavicle* ; Periprosthetic Fractures* ; Shoulder

No abstract available in English.
Clinical Study ; Shoulder Fractures

PURPOSE: The purpose of the study was to evaluate the results and analyze various prognostic factors of hemiarthroplasty for proximal humeral fractures. MATERIALS AND METHODS: Thirty-one cases, who underwent hemiarthroplasties for proximal humeral fractures, were evaluated with ASES score at a mean follow-up of 45 months (1-8 years). Global Total Shoulder (Depuy.) (TS Gr) for 21 cases, and Global FX (Depuy.) (FX Gr) for 10 cases were used. Twentysix cases were acute fractures within one month after injury. There were two cases with delayed union and three cases with nonunion. Prognostic values of age, delay of surgery, fracture type, position of the greater tuberosity and design of implant were assessed. RESULTS: The most important prognostic factor was the design of implant. Mean score of FX Gr was significantly higher than that of TS Gr (84.4 and 77.6 respectively, p=0.036). Age, fracture type, delay of surgery and position of the greater tuberosity did not show any prognostic value. CONCLUSION: The clinical results of Hemiarthroplasty specially designed for the proximal humeral fractures has better than that of preexisting implant. Design of the implant was considered to be the most important prognostic factor of hemiarthroplasty for the proximal humeral fractures.
Follow-Up Studies ; Hemiarthroplasty* ; Shoulder ; Shoulder Fractures*

The authors have reviewed 11 cases of prosthetic replacement for severe proximal humeral fractures which were treated from March 1989 to December 1993, paying particular attention to the range of motion attained after surgery and the factors which influence the limitation of shoulder motion. The results of this study were as follows: l. Among the 11 cases, 10 cases showed sttisfactory pain relief. 2. Active motion of the shoulder averaged 91° of forward flexion, 72.8° of abduction and 35° of external rotation. 3. The humeral offset averaged 30.9mm in normal shoulder and 18.9mm in affected shoulder. 4. In 6 cases which the humeral offset measured over 20mm, active motion averaged 104° of forward flexion and 83° of abduction and 5 cases showed satisfactory results. 5. In 5 cases which the humeral offset measured under 20mm, active motion averaged 104° of forward flexion and 83 of abduction and 5 cases showed unsatisfactory results. 6. Prosthetic replacements were performed within 1 week after injury in 7 cases and among these 5 cases showed satisfactory results. The range of motion after prosthetic replacement for severe proximal humeral fracture was disappointing. We concluded that limited range of motion is mainly due to reduced humeral offset and restoration of humeral offset by appropriate reattachment of greater tuberosity will allow better clinical result.
Range of Motion, Articular ; Shoulder ; Shoulder Fractures

Since the introduction of shoulder arthroplasty by Neer in 1974, the design of not only the glenoid component but also the humeral component used in shoulder arthroplasty has continually evolved. Changes to the design of the humeral component include a gradually disappearing proximal fin; diversified surface finishes (such as smooth, grit-blasted, and porous coating); a more contoured stem from the originally straight and cylindrical shape; and the use of press-fit uncemented fixation as opposed to cemented fixation. Despite the evolution of the humeral component for shoulder arthroplasty, however, stem-related complications are not uncommon. Examples of stem-related complications include intraoperative humeral fractures, stem loosening, periprosthetic fractures, and stress shielding. These become much more common in revision arthroplasty, where patients are associated with further complications such as surgical difficulty in extracting the humeral component, proximal metaphyseal bone loss due to stress shielding, intraoperative humeral shaft fractures, and incomplete cement removal. Physicians have made many attempts to reduce these complications by shortening the stem of the humeral component. In this review, we will discuss some of the limitations of long-stem humeral components, the feasibility of replacing them with short-stem humeral components, and the clinical outcomes associated with short-stemmed humeral components in shoulder arthroplasty.
Arthroplasty ; Humans ; Humeral Fractures ; Periprosthetic Fractures ; Shoulder

Although studies on malrotation of the humerus possibly leading to dysfunction of the shoulder have been reported, studies on its causes are inadequate. The authors encountered a patient complaining of malrotation accompanied by dysfunction of the shoulder which occurred during treatment of a distal humeral fracture. The patient recovered the shoulder function by only correcting malrotation of the humerus without direct treatment on the shoulder, and we report it herein with a review of the literature.
Humans ; Humeral Fractures ; Humerus* ; Shoulder*

PURPOSE: The purpose of this study is to compare the results of using a locking compression plate and an unlocked plate for treating proximal humeral fractures. MATERIALS AND METHODS: This study was based on 20 patients who underwent plate fixation for proximal humeral fractures out of the 87 patients with proximal humeral fractures and who were admitted from 2003 to 2007 in our hospital. Of the 20 patients, 10 were treated with a locking compression plate and the other 10 were treated with an unlocked plate. Each group was evaluated according to the humeral neck shaft angle, the period until bony union, the complications and the Constant score. The humeral neck shaft angle was based on plain x-rays taken immediately after the operation and at 6 months postoperatively. The Constant score was evaluated on the last visit to our clinic. RESULTS: There was no significant statistical difference between the two groups in terms of the neck shaft angle, the period until bony union and the Constant score. Yet, there were three cases of screw migration in the unlocked plate group. CONCLUSION: There was no significant difference between the two groups in terms of the neck shaft angle, the period until bony union and the Constant score. The locking compression plate is considered to achieve more effective fixation for proximal humerus fractures because there were less complications such as screw migration.
Humans ; Humerus ; Neck ; Shoulder Fractures