To test the hypothesis that reseeded anterior cruciate ligament (ACL)-derived cells have a better ability to survive and integrate into tendon extracellular matrix (ECM) and accelerate the ligamentization process, compared to adipose-derived mesenchymal stem cells (ADMSCs). Acellularized tibialis allograft tendons were used. Tendons were randomly reseeded with ACL-derived cells or ADMSCs. ACL-derived cells were harvested and isolated from remnants of ruptured ACLs during reconstruction surgery and cultured at passage three. Cell suspensions (200 µl) containing 2 × 106 ACL-derived cells or ADMSCs were prepared for the purpose of reseeding. At days 1, 3, and 7 post-reseeding, graft composites were assessed for repopulation with histological and immunohistochemical analysis. Matrix protein contents and gene expression levels were analyzed.Aims
Methods
The aim of this study was to compare the rate of mortality and
causes of death in Korean patients who undergo surgery for a fracture
of the hip, up to 11 years after the injury, with a control group
from the general population. National cohort data from Korean Health Insurance Review and
Assessment Service – National Sample Cohort were used. A ratio of
1:4 matched patients with a fracture who underwent surgery (3383,
fracture group) between 2003 and 2012, and controls (13 532) were
included. The matches were processed for age, gender, income, and
region of residence. We also undertook analyses of subgroups according
to age and gender. The mean follow-up was 4.45 years (1 to 11).Aims
Materials and Methods
We investigated the incidence of venous thromboembolism (VTE) and pulmonary embolism (PE) after total knee arthroplasty (TKA) and assessed the efficacy and complications of three different chemical prophylactic regimens. From May, 2011 to November 2013, 268 patients, 330 knees were randomly allocated to three groups, low molecular weight heparin (LMWH) 5000IU for 2 days followed by aspirin 100mg for 5 days (Group HA, 110 knees), rivaroxaban 10mg for 7 days (Group X7, 110 knees), or for 10 days (Group X10, 110 knees) postoperatively. Intermittent pneumatic compression device was applied on all patients. The multidetector row computed tomography (MDCT) was done at postoperative 10 days to evaluate VTE (PE & DVT separately), and MDCT was rechecked to evaluate the changes of VTE at postoperative 3 months in VTE patients. Additionally, major and minor bleeding complications, amounts of bleeding, and bruise around wound were checked.Introduction
Materials and Methods
The purpose of this study was to evaluate the mid-term clinical and radiological results in patients who were managed by double metal augmentations in proximal tibial uncontained bony defects undergoing primary or revision total knee arthroplasty We performed double metal augmentations in proximal tibial uncontained bony defects undergoing total knee arthroplasty. Out of total 14 patients, 8 patients (4 priamry arthroplasty, 4 revision arthroplasty), mean 61.3 (50–80) years, were available for review at least 5 years follow up. The average follow up period was 86.3(60–99) months. Range of motion, American Knee Society Score were evaluated pre- and postoperatively as a clinical values. Another clinical assessments undertaken at the final reviews, Western Ontario and McMaster Universities osteoarthritis index (WOMAC), Oxford knee score (OKS), Short Form-36 (SF-36), Lower extremity functional scale (LEFS), and Lower extremity activity scale (LEAS) were checked. Radiological results, involving presence of radiolucent lines (RLLs) > 1mm in width, and osteolysis at the block-cement-bone interface were taken under fluoroscopic images at postoperatively and annually thereafter.Introduction
Materials and Methods
Revision TKA using CCK prosthesis showed comparable outcome to PS prosthesis in clinical and radiological results. In revision total knee arthroplasty (TKA), the goal should be to obtain good motion, function and most importantly stability. The stability depends on remaining soft tissue and implant design. The more the ligaments retain function, the less the implant constraint is needed to achieve stability. With increased constraint, the transfer of joint reaction forces to implant-bone interface may lead to mechanical loosening of the implant. Constrained condylar knee (CCK) prosthesis provides more constraint compared with posterior stabilized (PS) prosthesis. The purpose of this study was to compare the clinical, radiological outcome and survivorship of CCK and PS prosthesis in revision TKA.Summary
Introduction
UC TKA showed similar anteroposterior translation and more femoral external rotation of earlier onset when compared to PS TKA. Recently highly conforming ultracongruent TKA has been reintroduced with improved wear characteristics and lower complications. The purpose of the study was to assess kinematics and clinical outcome of posterior stabilized and ultracongruent rotating-platform mobile bearing TKA.Summary
Introduction
Bone defects are occasionally encountered during
primary total knee replacement (TKR) and cause difficulty in establishing
a stable well-aligned bone-implant interface. Between March 1999
and November 2005, 59 knees in 43 patients underwent primary TKR
with a metal block augmentation for tibial bone deficiency. In all,
six patients (eight knees) died less than four years post-operatively,
and four patients (five knees) were lost to follow-up leaving 46 knees
in 33 patients available for review at a mean of 78.6 months (62
to 129). The clinical results obtained, including range of movement,
American Knee Society and Oxford knee scores, and the Western Ontario
and McMaster Universities osteoarthritis index, were good to excellent,
with no failures. Radiolucent lines at the block-cement-bone interface
were noted in five knees (11%) during the first post-operative year,
but these did not progress. Modular rectangular metal augmentation for tibial bone deficiency
is a useful option. No deterioration of the block-prosthesis or
block-cement-bone interface was seen at minimum of five years follow-up.
In a 41-year-old man, right-sided infraspinatus muscle weakness was associated with compression of the suprascapular nerve caused by a spinoglenoid ganglion cyst. The lesion was confirmed using electromyography and MRI. In addition, arthroscopy showed an incomplete discoid labrum. The free inner edge of the labrum was removed as in a meniscectomy of a discoid meniscus in the knee joint. Arthroscopic decompression of the cyst was performed through a juxtaglenoid capsulotomy which was left open. Neurological function recovered completely.
