• Knee surgery & related research
• /
• 제30권4호
• /
• pp.326-333
• /
• 2018

Purpose: To evaluate the reliability and validity of the femorotibial mechanical axis angle from radiographs in the weight bearing (WB) and supine positions compared with navigation-measured values. Materials and Methods: Sixty-eight cases of navigation-assisted total knee arthroplasty (TKA) were included. The pre- and postoperative whole leg radiographs (WLRs) in WB and supine positions were compared with the initial and final navigation values. Results: The mean mechanical axis angle from the preoperative WBWLR and navigation were not statistically different (p=0.079) and were correlated strongly with each other (intraclass correlation [ICC], 0.818). However, on postoperative measurements, although the WBWLR and navigation values were not different (p=0.098), they were not correlated with each other (ICC, 0.093). The standard error of measurement was $1.8^{\circ}{\pm}3.6^{\circ}$ for the preoperative WBWLR and $2.5^{\circ}{\pm}4.8^{\circ}$ for the postoperative WBWLR. The validity that was determined by the Bland-Altman plot was not acceptable for both pre- and postoperative measurements. Conclusions: The preoperative WBWLR could provide accurate but not precise measurement value of the femorotibial mechanical axis angle for navigation-assisted TKA, and postoperative measurements in navigation were not comparable with radiographic measurements. The lack of agreement was found between the radiographic and navigation measurements of the coronal alignment regardless of pre- or postoperative evaluation although the accuracy was found acceptable. Level of Evidence : Level 4.

• PNF and Movement
• /
• 제16권1호
• /
• pp.75-83
• /
• 2018

Purpose: This study investigated the effects of proprioceptive neuromuscular facilitation (PNF) exercise on the range of motion (ROM), pain, and functional activity of patients who received total knee arthroplasty (TKA). The purpose of this study was to provide fundamental data regarding the use of PNF exercise among patients with musculoskeletal disease. Methods: Fourteen patients who received TKA were randomly divided into an experimental group (n=7) that took part in PNF exercise and a control group (n=7) that performed general rehabilitation exercise. Both groups performed the respective exercises for 30 minutes, five times a week for 2 weeks. For the measurement of ROM, the range of knee flexion was measured using a clinometer smartphone application. A visual analogue scale (VAS) was used for the measurement of the level of pain. The timed up and go test (TUG) was conducted to measure functional activity. A paired t-test was performed to compare within-group changes before and after the PNF exercise. Differences between the experimental group and control group were analyzed by an independent t-test. For all tests, the level of statistical significance was set at ${\alpha}=0.05$. Results: After the exercise, there was a significant within-group change in VAS and TUG scores in the experimental group and control group (p<0.01). There was also a significant between-group difference in VAS and TUG scores after the intervention (p<0.05). Conclusion: General rehabilitation exercise is commonly applied as a treatment for TKA patients and is relatively effective. The application of PNF exercise may be useful in such patients, considering its effects on ROM improvement, pain reduction, and functional enhancement.

• 대한정형외과학회지
• /
• 제55권4호
• /
• pp.343-347
• /
• 2020

메이-터너 증후군(May-Thurner syndrome)은 장골 정맥 압박 증후군으로 알려져 있고 좌하지의 총 정맥 유출로가 압박되어 부종, 통증 또는 혈전(심부정맥 혈전증)을 유발할 수 있는 상태이다. 특히 우측 총 장골 동맥과의 교차 지점에서 좌측 총 장골 정맥이 압박되는 형태가 전형적이다. 저자들은 우측 인공 슬관절 전치환술을 시행한 75세 여자 환자에서 메이-터너 증후군이 합병된 증례를 치료하였고 이를 보고하고자 한다. 수술을 시행한 후 좌측 하지의 부종과 통증에 대해 혈관 조영술 및 컴퓨터 단층촬영을 이용해 메이-터너 증후군을 진단하였다. 혈전용해제와 혈전제거술를 사용하여 혈전을 제거한 후 혈관 성형술 및 정맥 내 스텐트를 삽입하였다. 한국에서 인공 슬관절 전치환술 후 메이-터너 증후군이 합병된 증례는 보고된 바가 없다. 이에 저자들은 문헌고찰과 함께 보고하고자 한다.

• Korean Journal of Radiology
• /
• 제22권8호
• /
• pp.1341-1351
• /
• 2021

Objective: To compare the quality of various polychromatic and monochromatic images with or without using an iterative metal artifact reduction algorithm (iMAR) obtained from a dual-energy computed tomography (CT) to evaluate total knee arthroplasty. Materials and Methods: We included 58 patients (28 male and 30 female; mean age [range], 71.4 [61-83] years) who underwent 74 knee examinations after total knee arthroplasty using dual-energy CT. CT image sets consisted of polychromatic image sets that linearly blended 80 kVp and tin-filtered 140 kVp using weighting factors of 0.4, 0, and -0.3, and monochromatic images at 130, 150, 170, and 190 keV. These image sets were obtained with and without applying iMAR, creating a total of 14 image sets. Two readers qualitatively ranked the image quality (1 [lowest quality] through 14 [highest quality]). Volumes of high- and low-density artifacts and contrast-to-noise ratios (CNRs) between the bone and fat tissue were quantitatively measured in a subset of 25 knees unaffected by metal artifacts. Results: iMAR-applied, polychromatic images using weighting factors of -0.3 and 0.0 (P_-0.3i and P_0.0i, respectively) showed the highest image-quality rank scores (median of 14 for both by one reader and 13 and 14, respectively, by the other reader; p < 0.001). All iMAR-applied image series showed higher rank scores than the iMAR-unapplied ones. The smallest volumes of low-density artifacts were found in P_-0.3i, P_0.0i, and iMAR-applied monochromatic images at 130 keV. The smallest volumes of high-density artifacts were noted in P_-0.3i. The CNRs were best in polychromatic images using a weighting factor of 0.4 with or without iMAR application, followed by polychromatic images using a weighting factor of 0.0 with or without iMAR application. Conclusion: Polychromatic images combined with iMAR application, P_-0.3i and P_0.0i, provided better image qualities and substantial metal artifact reduction compared with other image sets.

• 한국전문물리치료학회지
• /
• 제23권1호
• /
• pp.20-30
• /
• 2016

Background: Total knee arthroplasty (TKA) recovers the alignment of the knee joint, but fails to automatically restore the alignment and function of the hip and ankle joints. It may affect the alignment and stability of the knee joint, therefore therapeutic intervention in hip and ankle joint is necessary for the rehabilitation process after TKA. Objects: The aim of this study was to comparison of the effects of the two exercise methods on the coronal plane alignment after TKA. This study conducted an experiment by dividing subjects into a lower extremity isometric co-contraction group (LEIC) and a quadriceps isolated isometric contraction (QIIC) group. Methods: A total of 37 subjects were randomly assigned to the LEIC ($n_1$=19) or the QIIC ($n_2$=18). Exercise was applied to five times per week for three weeks, starting on the eighth day after surgery. Range of motion exercises were performed as a common intervention and then each group performed quadriceps isometric contraction exercises with 10 sets of 5 repetitions. Radiological imaging was performed prior to surgery, one month and six months after surgery. In addition, the hip-knee-ankle angle (HKA) and tibiotalar angle (TTA) were measured. Results: The HKA was close to neutral in the LEIC rather than the QIIC (p<.05). The LEIC showed varus and the QIIC exhibited valgus TTA (p<.05). In a comparison of HKA and TTA over time, there was no significant change in either group (p>.05). According to the comparison of the TTA before surgery, the LEIC showed significant changes in the varus direction (p<.05), while there was no significant change in the QIIC (p>.05). Conclusion: The LEIC method triggered changes in the TTA and brought the HKA close to the neutral. Thus, LEIC is more effective than QIIC in creating stability in the coronal plane alignment of the knee and ankle joints after TKA.

• 대한임상전기생리학회지
• /
• 제10권2호
• /
• pp.31-35
• /
• 2012

Purpose : The purpose of this study was to investigate the effect of kinematic variables by analysis of a gait in older. Methods : This study selected nine in older adults with osteoarthritis. The Kinematic variables during walk were compared analyzed using motion analysis. Results : The findings of this study are as follows. Stance time showed significant difference within-subject groups and interaction within-subjects and time. The swing and stride time showed a no significant interaction within-subjects and time. Swing time showed a no significant difference according to time and within-subjects. Stride time showed a significant difference according to time. But, stride time showed a no significant difference according to within-subjects. Conclusion : These findings of this study indicate that when the patients with total knee arthroplasty decreased stability. Therefore, stance and stride time showed increase when walking, because to decrease the weight bearing that is delivered to knee. And swing time showed decrease.

• 대한정형외과학회지
• /
• 제52권1호
• /
• pp.92-96
• /
• 2017

슬관절 전치환술 후 감염은 큰 관심을 가지는 문제로 국소 부위 및 전신적 감염의 형태로 나타날 수 있으며, 때로는 패혈증으로 진행되는 사례가 보고되고 있다. 이러한 패혈증은 신체의 다양한 부위로 전파될 수 있으며 사망에까지 이르게 하는 중대한 합병증이다. 하지만 감염 후 척추로 전이된 경우는 임상 증상이 뚜렷하지 않아 진단이 어려우며, 이러한 증례에 대한 보고는 어떠한 문헌에도 없었다. 이에 양측 슬관절 전치환술 후 감염으로 인하여 패혈증으로 진행되어 척추로 전이된 증례를 보고하고자 한다.

• 대한정형외과 초음파학회지
• /
• 제7권1호
• /
• pp.39-44
• /
• 2014

슬개골 덜컹 증후군은 인공 관절 전치환술 후 슬개골 버튼 근위부에 섬유성 결절이 형성되어 통증, 염발음, 잠김 현상등의 증상이 발생하는 슬개 대퇴 합병증이다. 주로 후방 안정형 삽입물을 사용한 후에 발생하며, 굴곡시 섬유성 결절이 과간 절흔에 포착되었다가 신전시 이탈하면서 증상을 유발한다. 대퇴 삽입물의 구조적 특징이 가장 큰 원인으로 추정되고 초기의 후방 안정형 삽입물에서 발생 빈도가 높았다. 이후 새로운 형태의 삽입물에서는 구조가 개선되어 발생 빈도가 감소하였으나 최근까지도 슬개골 덜컹 증후군의 발생이 보고되고 있다. 진단은 주로 증상에 의해 이루어지며, 영상의학적 검사도 진단에 도움이 된다. 특히, 초음파 검사는 대퇴 사두건의 섬유성 결절을 쉽고 간편하게 발견할 수 있다. 저자들은 초음파를 이용하여 진단된 슬개골 덜컹 증후군 1례를 경험하여 보고하고자 한다.

• 대한정형외과학회지
• /
• 제55권6호
• /
• pp.527-533
• /
• 2020

목적: 슬관절 인공관절 전치환술(total knee arthroplasty, TKA) 후 통증 조절을 위한 부프레노르핀 경피 패치(buprenorphine transdermal patch, BTDP)의 흉부 적용 및 무릎 적용 효과를 비교하고자 하였다. 대상 및 방법: 2018년 8월부터 2019년 8월까지 TKA를 시행한 231명 중에서 나이, 성별, 체질량 지수(body mass index) 등을 고려한 환자-대조군 연구를 통해 선별된 200예를 대상으로 후향적으로 분석하였다. BTDP를 적용하기 전후에 Numeric Rating Scale (NRS), 부작용 및 순응도를 측정하였으며 흉부 적용군(A군=100명)과 무릎 적용군(B군=100명) 사이의 모든 측정치를 비교하였다. 결과: 술 후 BTDP 적용군 간의 휴식 시 NRS는 전반적으로 비슷하였으나 B군의 술 후 2, 3일째 오후, 5일, 6일, 7일째 휴식 시 NRS는 A군의 NRS보다 통계적으로 유의하게 낮았다. BTDP 적용 후 중추신경계, 위장관계 부작용은 B군에서 유의하게 낮았다. 심혈 관계, 피부의 부작용은 두 군 간에 유의한 차이가 없는 것으로 나타났다. 통증 조절을 위한 지속적인 BTDP 유지에서도 B군이 A군에 비하여 유의하게 높게 나타났다. 결론: TKA 후 BTDP를 통증이 있는 무릎 관절에 직접 적용하는 것은 술 후 초기 통증 조절에 있어 우수한 결과를 보였으며 기존의 흉부 적용 방법보다 부작용 빈도를 줄여 환자의 순응도를 높일 수 있는 유용한 방법으로 판단된다.

• 한국의료질향상학회지
• /
• 제6권1_2호
• /
• pp.18-31
• /
• 1999