• Hip & pelvis
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• 제35권4호
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• pp.238-245
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• 2023

Purpose: Elderly patients with degenerative diseases undergo treatment for the hip and spine; these patients present with various symptoms. This study focused on patients with residual symptoms, predominantly pain, even after receiving treatment for their spinal lesions. Materials and Methods: Patients who underwent total hip arthroplasty (THA) between 2016 and 2022 at a single tertiary hospital were included in the study. Of the 417 patients who underwent primary THA, a retrospective review of 40 patients with previous lesions of the spine was conducted. Patients were stratified to two cohorts: Patients with symptoms related to the spine (Group A), and those with hip-related symptoms (Group B). Preand postoperative comparisons of groups A and B were performed. Results: Improvements in patients' symptoms were observed in groups A and B after THA. In Group A, the mean preoperative visual analog scale (VAS) score was 5.10±0.876, which showed a postoperative decrease to 2.70±1.767. In Group B, the mean preoperative VAS score was 5.10±1.539, which showed a postoperative decrease to 2.67±1.493. Conclusion: According to the findings, promising results were achieved with THA in treatment of debilitating diseases of the hip for both the prognosis of the disease, as well as the patients' symptoms. In addition, in some cases elderly patients with dual pathologies underwent treatment for spinal lesions without performance of any evaluation related to the hip. Thus, evaluation of a patient's hip must be performed and performance of THA in patients with symptoms even after treatment of spinal lesions is recommended.

• 대한기계학회논문집A
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• 제28권11호
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• pp.1664-1671
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• 2004

It is necessary to have a model that describes the feature of the knee Joint with a sufficient accuracy. Koreans, however, do not have their own knee joint model to be used in the total knee replacement arthroplasty. They have to use European or American models which do not match Koreans. Three-dimensional visualization techniques are found to be useful in a wide range of medical applications. Three-dimensional imaging studies such as CT(computed tomography) and MRI(magnetic resonance image) provide the primary source of patient-specific data. Three-dimensional knee joint models were constructed by image processing of the CT data of 10 subjects. Using the constructed model, the dimensions of Korean knee joint were measured. And this study proposed a three-dimensional model and data, which can be helpful to develop Korean knee implants and to analyze knee joint movements.

• Clinics in Shoulder and Elbow
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• 제26권3호
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• pp.245-251
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• 2023

Background: For anatomic total arthroscopic repair, cementless humeral fixation has recently gained popularity. However, few studies have compared clinical, radiographic, and patient-reported outcomes between cemented and press-fit humeral fixation, and none have performed follow-up for longer than 5 years. In this study, we compared long-term postoperative outcomes in patients receiving a cemented versus press-fit humeral stem anatomic arthroscopic repair. Methods: This study retrospectively analyzed 169 shoulders that required primary anatomic total shoulder arthroplasty (aTSA). Shoulders were stratified by humeral stem fixation technique: cementation or press-fit. Data were collected pre- and postoperatively. Primary outcome measures included range of motion, patient reported outcomes, and radiographic measures. Results: One hundred thirty-eight cemented humeral stems and 31 press-fit stems were included. Significant improvements in range of motion were seen in all aTSA patients with no significant differences between final cemented and press-fit stems (forward elevation: P=0.12, external rotation: P=0.60, and internal rotation: P=0.77). Patient reported outcome metrics also exhibited sustained improvement through final follow-up. However, at final follow-up, the press-fit stem cohort had significantly better overall scores when compared to the cemented cohort (visual analog score: P=0.04, American Shoulder and Elbow Surgeon Score: P<0.01, Simple Shoulder Test score: P=0.03). Humeral radiolucency was noted in two cemented implants and one press-fit implant. No significant differences in implant survival were observed between the two cohorts (P=0.75). Conclusions: In this series, we found that irrespective of humeral fixation technique, aTSA significantly improves shoulder function. However, within this cohort, press-fit stems provided significantly better outcomes than cemented stems in terms of patient reported outcome scores. Level of evidence: III.

• Clinics in Shoulder and Elbow
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• 제23권1호
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• pp.20-26
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• 2020

Background: High complication rate after open reduction and internal fixation can lead to use of primary total elbow replacement (TER) in treatment of complex distal humerus fractures in elderly patients. The purpose of this study was to investigate the short-term outcomes and complications after primary TER in patients with complex distal humerus fracture. Methods: Nine patients with acute complex distal humerus fracture were treated by primary TER using the semiconstrained Coonrad-Morrey prosthesis. The mean age of patients was 72.7 years (range, 63-85 years). Clinical and radiographic outcomes were evaluated over a mean follow-up of 29.0 months (range, 12-65 months) using visual analog scale (VAS) score for pain; Mayo elbow performance score (MEPS); Quick Disabilities of the Arm, Shoulder, and Hand (Quick-DASH) score; and serial plain radiographs. Complications were also evaluated. Results: At the final follow-up, mean VAS, MEPS, and Quick-DASH scores were 1.2, 80.5, and 20, respectively. The mean range of motion was 127.7° of flexion, 13.8° of extension, 73.3° of pronation, and 74.4° of supination. There was no evidence of bushing wear or high-grade implant loosening on serial plain radiographs. Three complications (33.3%) comprising two periprosthetic fractures and one ulnar neuropathy were observed. Conclusions: Primary TER for treatment of complex distal humerus fractures in elderly patients yielded satisfactory short-term outcomes. However, surgeons should consider the high complication rate after primary TER.

• Journal of Trauma and Injury
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• 제31권3호
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• pp.177-180
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• 2018

Heterotopic bone formation in abdominal incisions is a recognized but uncommon sequela of abdominal surgery. On the other hand, the formation of ectopic bone is a well-recognized complication following arthroplasty of the hip. Heterotopic ossification of midline abdominal incision scars is a subtype of myositis ossificans traumatica. Ectopic bone formation of midline abdominal incisions may cause regional pain or discomfort in the patient after surgery. If symptomatic, treatment is complete excision with primary closure. Radiologically, it is important to distinguish this benign entity from postoperative complications. We report a 69-year-old male who underwent exploratory laparotomy for traumatic small bowel perforation. A segment of abnormal hard tissue was found in the abdominal wall. Heterotopic ossification may occur at various sites and is a recognized but infrequent sequela of exploratory laparotomy. This case highlights clinical and etiological features of this finding.

• Clinics in Shoulder and Elbow
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• 제15권2호
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• pp.130-137
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• 2012

목적: 골다공증이 있는 노인환자에서 상완골 원위부 관절부위 골절로 관혈적 정복술 및 내고정술과 주관절 전치환술 시행 후 기능적 결과에 대해서 평가 보고하였다. 대상 및 방법: 2007년1월부터 2009년 10월까지 상완골 원위부 관절내 골절을 주소로 내원한 65세 이상의 환자 24명을 대상으로 하였으며 18명은 후방 도달법을 이용하여 관혈적 정복술 및 내고정술을 시행하고 (Fig. 1), 6명은 주관절 전치환술을 시행하였다 (Fig. 2). 평균 추시 기간은 16.3 개월 이였으며 골절형태는 AO 분류로 8명이 C2, 16명이 C3 형태의 골절이였다. 추시 시 모든 환자들은 방사선촬영 및 신체검사를 시행하였고, Mayo 주관절 수행점수, 및 DASH 점수를 이용하여 임상적 결과를 측정하였다. 결과: Group I 18예 모두 골유합 되었으며 골절부터 골유합까지 평균 기간은 14주였다. 합병증으로 2예에서 주두골 절골부위에 불유합이 관찰되었으며 척골신경증상을 보였던 2예 중 1예는 전방이전술에도 불구하고 개선되지 않았다. Mayo 주관절 수행점수는 평균 87.0점이였으며, DASH 점수는 평균 32.4점이였다. 마지막 추시 시에 시행한 이학적 검사에서 굴곡은 평균 121.0도 (95~145도), 굴곡구축은 평균 12도 (0~35)이였다. Group II 6예 모두 추시 기간내 합병증은 없었으며, Mayo 주관절 수행점수는 평균 89.1점 이였으며, DASH 점수는 평균 44.3점이었다. 마지막 추시 시에 시행한 이학적 검사에서 굴곡은 평균 125.1도 (100~145도), 굴곡 구축은 평균 12.6도 (0~30)이였다. 결론: 골다공증을 동반한 고령의 상완골 원위부 관절내 골절 환자에서 적절한 환자 선택시 내고정술 뿐만 아니라 전치환술에서도 단기 추시 시 만족할만한 결과를 보임을 확인할 수 있었다.

• 대한관절경학회지
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• 제17권1호
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• pp.38-43
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• 2013

목적: 슬관절 전치환술 후 발생한 감염에 대해서 시행한 관절경적 치료의 효용성과 치료 결과에 영향을 미치는 인자들에 대하여 알아보고자 하였다. 대상 및 방법: 슬관절 전치환술 후 발생한 감염에 대하여 관절경적 치료를 시행한 17예를 연구 대상으로 하였다. 혈액검사와 관절액 천자를 통해 감염을 확인한 후 관절경을 이용하여 변연 절제술과 활액막 제거술을 시행하고 항생제를 혼합한 생리 식염수를 사용하여 세척술을 시행하였다. 수술 후 정기적인 검사를 통해 치료의 실패 또는 재발 여부를 확인하고 수술 후 2년까지 감염의 재발이 없는 경우를 치료의 성공이라 판단하였다. 결과: 슬관절 전치환술 후 발생한 감염에 대하여 관절경적 수술로 치료받은 17예 중 13예에서는 1회의 관절경적 치료만으로 감염이 치료되었으나 4예는 감염이 지속 또는 재발되어 재수술을 시행하였다. 치료 결과에 영향을 미치는 인자들에 대해 분석해 본 결과 재수술을 시행한 군에서 관절경적 수술만으로 치료된 군보다 감염 증상 발현 후 수술까지의 기간이 더 길었다(p<0.05). 결론: 관절경적 수술을 이용한 슬관절 전치환술 후 발생한 감염의 치료는 적절한 환자의 선택, 철저한 변연 절제술과 세척술 및 적합한 항생제의 사용 등을 통해서 성공적인 결과를 기대할 수 있으나 감염이 의심된다면 가능한 빨리 수술을 시행해야 할 것으로 사료된다.

• Clinics in Shoulder and Elbow
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• 제21권4호
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• pp.192-199
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• 2018

Background: The currently available reverse shoulder arthroplasty (RSA) designs can be classified into medial glenoid/medial humerus (MGMH), lateral glenoid/medial humerus (LGMH), and medial glenoid/lateral humerus (MGLH) prosthesis designs. The purpose of this study was to radiologically analyze the effect of different RSA designs on humeral position following RSA. Methods: A total of 50 patients who underwent primary RSA were retrospectively analyzed. Among 50 patients, 33 patients (group A: MGMH) underwent RSA with Aequalis system (Wright, Inc, Bloomington, MN, USA), 6 (group B: LGMH) with Aequalis system using bony increased offset, and 11 (group C: MGLH) with Aequalis Ascend Flex system. The acromiohumeral distance, acromioepiphyseal distance (AED), lateral humeral offset (LHO), LHO from the center of rotation ($LHO^{COR}$), and deltoid length were radiologically measured to quantify the distalization and lateralization of the humerus. Results: The increment in postoperative AED was $19.92{\pm}3.93mm$ in group A, $24.52{\pm}5.25mm$ in group B, and $25.97{\pm}5.29mm$ in group C, respectively (p=0.001). The increment in postoperative LHO was $0.13{\pm}6.30mm$, $8.00{\pm}12.14mm$, and $7.42{\pm}6.88mm$, respectively (p=0.005). The increment in postoperative $LHO^{COR}$ was $20.76{\pm}6.06mm$, $22.04{\pm}5.15mm$, and $28.11{\pm}4.14mm$, respectively (p=0.002). Conclusions: The radiologic analysis of the effect of different RSA designs on humeral position following RSA showed significant differences in the increment in postoperative AED, LHO, and $LHO^{COR}$ between the 3 groups. Therefore, MGLH design seems to be more effective for humeral distalization and lateralization compared to original Grammont design.

• Clinics in Shoulder and Elbow
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• 제26권4호
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• pp.357-365
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• 2023

Background: The purpose of this study was to evaluate the effect of concomitant open distal clavicle excision (DCE) on postoperative clinical outcomes and incidence of acromial and scapular stress fractures (ASFs) in patients with symptomatic acromioclavicular joint osteoarthritis (ACJ OA) undergoing reverse total shoulder arthroplasty (RTSA). Methods: A single-surgeon retrospective cohort study was conducted including patients who underwent primary elective RTSA with or without DCE from 2015 to 2019 with a minimum 6-month follow-up period. Shoulder active range of motion (AROM) and visual analog scale (VAS) pain were recorded preoperatively and postoperatively. ASFs and other adverse events were identified using postoperative notes and/or radiographs. Characteristics and outcomes were compared between the RTSA and RTSA-DCE groups. Results: Forty-six RTSA patients (mean age, 67.9±8.7 years; 60.9% male; mean follow-up, 24.9±16.6 months) and 70 RTSA-DCE patients (mean age, 70.2±8.9 years; 20.0% male; mean follow-up, 22.7±12.9 months) were included. There were no significant intergroup differences in rates of ASF (RTSA, 0.0% vs. RTSA-DCE, 1.4%; P=1.00), stress reactions (RTSA, 8.7% vs. RTSA-DCE, 11.4%; P=0.76), reoperation, revision, or infection (all P>0.05), or in pre-to-postoperative reduction in VAS pain (P=0.17) at latest follow-up. However, the RTSA-DCE group had greater pre-to-postoperative improvement in flexion AROM (RTSA, 43.7°±38.5° vs. RTSA-DCE, 59.5°±33.4°; P=0.03) and internal rotation (IR) AROM (P=0.02) at latest follow-up. Conclusions: Concomitant DCE in RTSA improves shoulder flexion and IR AROM, alleviates shoulder pain, and does not increase the risk of ASFs. Level of evidence: III.

• Clinics in Shoulder and Elbow
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• 제26권3호
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• pp.231-237
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• 2023

Background: In the past decade, the number of anatomic total shoulder arthroplasty (aTSA) procedures has steadily increased. Patients over 65 years of age comprise the vast majority of recipients, and outcomes have been well documented; however, patients are opting for definitive surgical treatment at younger ages.We aim to report on the effects of age on the long-term clinical outcomes following aTSA. Methods: Among the patients who underwent TSA, 119 shoulders were retrospectively analyzed. Preoperative and postoperative clinical outcome data were collected. Linear regression analysis (univariate and multivariate) was conducted to evaluate the associations of clinical outcomes with age. Kaplan-Meier curves and Cox regression analyses were performed to evaluate implant survival. Results: At final follow-up, patients of all ages undergoing aTSA experienced significant and sustained improvements in all primary outcome measures compared with preoperative values. Based on multivariate analysis, age at the time of surgery was a significant predictor of postoperative outcomes. Excellent implant survival was observed over the course of this study, and Cox regression survival analysis indicated age and sex to not be associated with an increased risk of implant failure. Conclusions: When controlling for sex and follow-up duration, older age was associated with significantly better patient-reported outcome measures. Despite this difference, we noted no significant effects on range of motion or implant survival. Level of evidence: IV.