• Clinics in Shoulder and Elbow
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• 제27권2호
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• pp.141-148
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• 2024

Background: Radial head arthroplasty allows a high degree of customizability, and implant polarity has emerged as an important variable. The purpose of this meta-analysis was to evaluate differences in functional and clinical outcomes between patients receiving monopolar and bipolar radial head prosthetic implants. Methods: A systematic review and meta-analysis were employed, and 65 articles were identified in three databases. Twelve articles contained non-English or insufficient text and were consequently excluded, and 20 others did not contain sufficient data or follow-up. The remaining 33 articles were qualitatively and quantitatively reviewed. Results: In total, 33 populations were identified, with 809 unduplicated patients: 565 with monopolar and 244 with bipolar implants. In these respective patients, the mean follow-up was 40.2 and 56.9 months. Average Mayo Elbow Performance Score were 86.7 and 87.4 (P=0.80), respectively; average Disability of the Arm, Shoulder, and Hand scores were 17.9 and 14.7 (P=0.47), and average final flexion/extension arcs were 119.4° and 118.7° (P=0.48). Revision rates were 4.07% and 6.56%, while complication rates were 19.65% and 20.08% in the respective monopolar and bipolar patients. These increased relative risks associated with bipolar implants were not significant. Conclusions: Radial head implant polarity does not appear to affect functional outcomes. While bipolar prosthetic design may increase the risks of revision and complications, the increases were not significant. Level of evidence: IV.

• Clinics in Shoulder and Elbow
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• 제5권1호
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• pp.37-41
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• 2002

Purpose : To evaluate the effect of radial head resection on longevity in nonconstrained total elbow arthroplasty, Materials and Methods : The results of 20 cases of radial head replaced Pritchard ERS and 18 cases of radial head excised Kudo elbow was followed for 6 to 16 years, 10.6 years in average. The rate of loosening, osteolysis, radial head subluxation, joint dislocation and valgus deformity were compared between the two groups. Results'There was no exaggerated cubitus valgus in Pritchard ERS group. However there developed one case of delayed subluxation of radial head occurred in 6 years postoperatively, one case of loosening, and one case of sponta- neous fracture of humeral shaft due to osteolysis. In Kudo elbow group,5 cases (27.8%) showed exaggerated valgus deformity with instability. There were one case of loosening and one case of delayed dislocation occurred in a year postoperatively. Conclusion : The most clear feature of Kudo elbow was exaggerated cubitus valgus. However, the ostolysis was developed in both groups and there was no difference in rate of the other complications between the two groups.

• Clinics in Shoulder and Elbow
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• 제14권1호
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• pp.140-145
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• 2011

목적: 금속 요골두 치환술은 주관절 불안정성을 동반한 고정할 수 없는 분쇄된 요골두 골절의 치료로 최근 다양한 임플란트의 개발로 널리 사용되고 있다. 저자는 금속성 요골두 치환술의 적응증과 국내에 사용중인 임플란트의 종류와 수술 술기를 문헌 고찰과 함께 기술하고자 한다. 대상 및 방법: 요골두 치환술의 주 적응증은 동반된 연부조직 손상으로 인한 주관절의 불안정성이 있고, 요골두의 분쇄 골절로 안정적인 내고정이 불가능한 골절이다. 이러한 경우 과거 시행되었던 요골두 절제술은 많은 합병증의 발생으로 금기시되고 있다. 현재 국내에서는 양극성, 압박 고정 단극성 및 이완 고정 단극성 임플란트의 3종류가 수입되어 사용되고 있다. 요골두 치환술은 궁극적으로 원래의 요골두의 크기와 길이로 복원하는 것이 중요하다. 과도하게 긴 요골두의 삽입은 흔한 합병증으로 수술 시 주의가 필요하다. 결과 및 결론: 요골두 치환술은 적절한 적응증과 정확한 수술 술기로 만족할 만한 임상적 결과를 얻을 수 있다. 향후 장기추시 연구와 다양한 치환물들의 임상적인 비교 연구가 필요하다.

• Clinics in Shoulder and Elbow
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• 제27권3호
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• pp.309-315
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• 2024

Background: Radiocapitellar arthritis can cause pain, loss of motion, and impaired elbow function. Current surgical treatment options are limited. We have developed an original and simple surgical technique to address this, called arthroscopic matched osteoplasty of the radial head (AMOR). In AMOR, the radial head is partially resected and recontoured to match the capitellum and decompress the degenerate radiocapitellar articulation while preserving the ulnohumeral articulation where the cartilage is usually well preserved. Methods: Indications and the surgical technique of the AMOR procedure are described. A retrospective observational service evaluation study was conducted from electronic patient records. Collected clinical outcomes included range of motion, pain level, subjective functional score, and general satisfaction with the results of the procedure. The radiographic outcome was radiocapitellar joint space. Results: Between 2017 and 2021, eight consecutive patients underwent AMOR as part of an arthroscopic osteocapsular arthroplasty procedure. Radiographically, the mean radiocapitellar joint space improved from an average of 1.7 mm to 4.6 mm. Clinically, the mean pain score decreased from 8/10 to 3/10. Six of the eight patients (75%) were satisfied with their results. In two cases, initial improvement following surgery lasted less than 1 year, and one of these patients underwent total elbow arthroplasty for painful ulnohumeral osteoarthritis. There were no complications of surgery recorded. Conclusions: AMOR is a safe treatment option for painful radiocapitellar osteoarthritis and can be incorporated as an "add-on" procedure by surgeons performing elbow osteocapsular arthroplasty in cases with a positive grip and grind test and radiographic evidence of radiocapitellar OA. Level of evidence: IV.

• Clinics in Shoulder and Elbow
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• 제26권2호
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• pp.156-161
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• 2023

Background: We analyzed association between viewing two-dimensional computed tomography (2D CT) images in addition to radiographs with radial head treatment recommendations after accounting for patient and surgeon factors in a survey-based experiment. Methods: One hundred and fifty-four surgeons reviewed 15 patient scenarios with terrible triad fracture dislocations of the elbow. Surgeons were randomized to view either radiographs only or radiographs and 2D CT images. The scenarios randomized patient age, hand dominance, and occupation. For each scenario, surgeons were asked if they would recommend fixation or arthroplasty of the radial head. Multi-level logistic regression analysis identified variables associated with radial head treatment recommendations. Results: Reviewing 2D CT images in addition to radiographs had no statistical association with treatment recommendations. A higher likelihood of recommending prosthetic arthroplasty was associated with older patient age, patient occupation not requiring manual labor, surgeon practice location in the United States, practicing for five years or less, and the subspecialties "trauma" and "shoulder and elbow." Conclusions: The results of this study suggest that in terrible triad injuries, the imaging appearance of radial head fractures has no measurable influence on treatment recommendations. Personal surgeon factors and patient demographic characteristics may have a larger role in surgical decision making. Level of evidence: Level III, therapeutic case-control study.

• 대한견주관절학회:학술대회논문집
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• 대한견주관절학회 2002년도 아시아견관절학술대회
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• pp.169-173
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• 2002

• Clinics in Shoulder and Elbow
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• 제10권1호
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• pp.84-91
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• 2007

목적: 총 7예의 금속형 요골 골두 치환술을 경험하여 적응증을 바탕으로 국내 요골두 치환술의 실태와 필요성을 소개하고자 하였다. 대상 및 방법: 2006년 4월부터 고려대학교 정형외과 교실에서 경험하였던 총 7예의 환자를 대상으로 수술 적응증, 수술 소견 및 수술 후 상태를 조사하였다. 그리고 치환물의 술 전 준비상태와 보험 적용 여부를 조사하였다. 금속형 치환물은 양극성 유형의 요골두 치환물(Tornier SA. Saint-Ismier, France)을 사용하였다. 결과: 전 예에서 요골두 분쇄 골절 이외에 $1{\sim}2$ 곳의 다른 골절 및 연부조직 손상을 동반한 복합 손상으로 요골두 치환술의 적응증에 해당되었다. 요골두 골절은 Mason 분류상 III형이 3예, IV형이 4예였고 분쇄골절로 인해 만족할만한 내고정을 얻지 못해 치환술을 시행하였다. 술 후 평가에서는 우수 2예, 양호 4예, 불량 1예였고 추시 시 치환물의 문제로 인한 합병증은 보이지 않았다. 술 전 수술 기구의 공급 부족으로 2예에서 수술 날짜를 변경하였고 치환물에 대한 비용은 산재 환자 2예를 제외한 5예에서 환자 개인이 부담하였다. 결론: 요골 골두의 분쇄를 포함한 주관절의 복합 손상에서 금속형 치환물은 술 전 계획 하에 준비되어야 하며, 의료보험의 적용으로 의사 및 환자들의 치료 선택에 도움을 주어야 할 것으로 생각되었다.