Radiographic Findings in Flexion Instability after Total Knee Arthroplasty

J Knee Surg DOI: 10.1055/s-0041-1735279Flexion instability (FI) is one of the leading causes of knee pain and revision surgery. Generally, the biomechanical etiology is considered to be a larger flexion than extension gap. This may be due to mismatch of components sizes to the bone or malalignment. Other factors such as muscle weakness may also play a role, and the diagnosis of FI after total knee arthroplasty (TKA) relies on a combination of patient's complaints during stair descent or walking and physical examination findings. Our study examines the role of implant positioning and sizes in the diagnosis of FI. A retrospective review of 20 subjects without perceived FI and 13 patients diagnosed with FI after TKA was conducted. Knee injury and osteoarthritis outcome scores (KOOS) were documented, and postoperative radiographs were examined. Measurements including included tibial slope, condylar offset, femoral joint line elevation along with surrogate soft-tissue measures for girth and were compared between groups. The FI group was found to have a significantly lower KOOS score compared with the non-FI group (55.6 vs. 73.5; p = 0.009) as well as smaller soft-tissue measurements over the pretubercle region (6.0 mm vs. 10.6 mm; p = 0.007). Tibial slope, condylar offset ratios, and femoral joint line elevation were not significantly different between the FI and non-FI groups. We noted a significant difference in tibial slope in posterior...
Source: Journal of Knee Surgery - Category: Orthopaedics Authors: Tags: Original Article Source Type: research

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CONCLUSIONS: The intermediate-term outcome of 3-dimensional-guided corrective osteotomies for distal radius intra-articular malunions showed excellent patient-reported outcomes and no clinically relevant progression of osteoarthritis. Type of study/level of evidence Therapeutic IV.PMID:34507869 | DOI:10.1016/j.jhsa.2021.07.018
Source: Hand Surgery - Category: Surgery Authors: Source Type: research
J Neurosurg Spine. 2021 Sep 3:1-8. doi: 10.3171/2021.2.SPINE201494. Online ahead of print.ABSTRACTOBJECTIVE: Recently, new patient-reported outcome measures (PROMs) of the spine were designed to overcome the limitations of previous spinal PROMs and to consider the whole spine as a single kinetic functional unit. Owing to the significance of spine-hip-knee and global body balance, the spine and lower extremities cannot be considered separately. However, no reports have evaluated lower-extremity functional outcome using PROMs after lumbar spine surgery. The authors aimed to elucidate changes in hip and knee PROMs after lumba...
Source: Journal of Neurosurgery.Spine - Category: Neurosurgery Authors: Source Type: research
J Rheumatol. 2021 Sep 1:jrheum.210270. doi: 10.3899/jrheum.210270. Online ahead of print.ABSTRACTOBJECTIVE: Determine the relationship of patellofemoral osteoarthritis (OA) to changes in performancebased function over 7 years.METHODS: 2666 participants (62.2±8.0 years, BMI 30.6±5.9kg/m2; 60% female) from the Multicenter Osteoarthritis Study with knee radiographs at baseline and who completed repeated chair stands and 20- meter walk test at baseline, 2.5, 5, and 7 years were included. Generalized linear models assessed the relation of radiographic patellofemoral OA and radiographic patellofemoral OA with frequ...
Source: J Rheumatol - Category: Rheumatology Authors: Source Type: research
J Knee Surg DOI: 10.1055/s-0041-1733880MRI is an essential diagnostic imaging modality for many knee conditions; however, it is not indicated in the setting of advanced knee arthritis. Inappropriate MRI imaging adds to health care costs and may delay definitive management for many patients. The primary purpose of this study was to ascertain the frequency of inappropriate MRI scans performed at one Veterans' Administration Medical Center (VAMC). We performed a retrospective chart review of all knee MRIs ordered over a 6-month period. Inappropriate MRI was defined as MRI performed prior to radiographs (XRs), or in the presen...
Source: Journal of Knee Surgery - Category: Orthopaedics Authors: Tags: Original Article Source Type: research
We report a case series of 26 patients (32 operations) with Eaton stage I and II CMC OA who underwent a novel surgical technique that anatomically restores the CMC joint with autologous double ligament reconstruction. All cases were retrospectively reviewed as a prospective study and performed at a single regional health system from 2012 to 2016. Preoperative and postoperative radiographs, grip and pinch strength measurements, and DASH scores were collected to evaluate the outcomes. The mean CMC subluxation ratio decreased from 0.59±0.14 to 0.35±0.21 (P
Source: Techniques in Hand and Upper Extremity Surgery - Category: Surgery Tags: Techniques Source Type: research
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