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1.
Peter B. White Mrinal Sharma Ahmed Siddiqi James R. Satalich Amar S. Ranawat Chitranjan S. Ranawat 《The Journal of arthroplasty》2019,34(5):887-892
Background
Anterior knee pain (AKP) remains a complex issue affecting patient satisfaction after total knee arthroplasty. Several radiographic parameters have been shown to be causative factors with various designs. The aim of this study is to evaluate the known radiographic parameters of AKP and clinical outcomes (ie, AKP) in the setting of a modern prosthesis with an anatomic patella button.Methods
Between July 2012 and December 2013, 90 total knee arthroplasties received 3 skyline views taken at 30°, 45°, and 60°. A patient-administered questionnaire was administered at 2-year follow-up to assess the incidence of AKP, painless noise, and satisfaction. Radiographs were analyzed for patellofemoral overstuffing, patellar tilt, and patellar displacement, and evaluated the patella resection angle.Results
On the patient-administered questionnaire, 10 (11.1%) patients reported AKP of a mild-to-moderate nature. Thirty-one had the best view at 30 Merchant views, 24 had best views at 45, and 35 had best views at 60. We found that patellar resection angle correlated with AKP (odds ratio 1.21, P = .044) and painless noise (odds ratio 1.22, P = .034). Patellar displacement and patellofemoral stuffing did not correlate with AKP or painless noise. No radiographic measurements correlated with changes in Knee Society Score pain or function scores or range of motion.Conclusion
We found that a patellar resection angle correlated with the incidence of AKP and painless noise at 2-year follow-up. We failed to find any correlation with patellofemoral overstuffing, patellar displacement, or patellar tilt with clinical outcomes. We recommend the use of 3 Merchant views to fully evaluate the patellofemoral joint. 相似文献2.
Total Knee Arthroplasty Wound Complication Treatment Algorithm: Current Soft Tissue Coverage Options
Nirav H. Amin Joshua N. Speirs Matthew J. Simmons Oren Z. Lermen Fred D. Cushner Giles R. Scuderi 《The Journal of arthroplasty》2019,34(4):735-742
Background
Wound complications associated with soft tissue defects following total knee arthroplasty present challenges for the orthopedic surgeon. The scale of early complications include less morbid problems, such as quickly resolving drainage and small superficial eschars, to persistent drainage and full-thickness tissue necrosis, which may require advanced soft tissue coverage.Methods
This review outlines current wound management strategies and provides an algorithm to help guide treatment and clinical decision-making.Conclusion
A surgeon’s understanding of soft tissue coverage options is essential in protecting the knee prosthesis from a deep infection and to obtain an optimal functional outcome. 相似文献3.
4.
5.
Joshua R. Labott Cody C. Wyles Matthew T. Houdek Megha M. Tollefson David J. Driscoll William J. Shaughnessy Rafael J. Sierra 《The Journal of arthroplasty》2019,34(4):682-685
Background
Klippel-Trénaunay syndrome (KTS) is a severe vascular malformation that can lead to hypertrophic osteoarthritis. Total knee arthroplasty (TKA) performed in extremities affected with KTS is challenging given the high-risk vascular considerations and occasionally poor bone quality.Methods
We identified 12 patients with KTS who underwent TKA between 1998 and 2017. There were 7 men, mean age 42 years, and mean follow-up was 7 years. Before arthroplasty, 2 patients (17%) had preoperative sclerotherapy. Preoperative vascular studies were done for 9 patients (75%) and included magnetic resonance imaging (n = 7), magnetic resonance angiography (n = 1), and computed tomography angiography (n = 1). A preoperative blood conservation protocol was used for all operations and included the use of tranexamic acid (TXA) in later years. Posterior-stabilized TKA was used in 10 cases and cruciate-retaining TKA was used in 2 cases.Results
At final follow-up, 2 patients (17%) had undergone revision surgery: 1 for infection and 1 for tibial loosening with subsequent arthrofibrosis. Knee Society Scores (36-83, P < .0001) and functional scores (48-84, P = .0007) significantly increased between the preoperative and postoperative period. Likewise at last follow-up, the mean knee range of motion significantly increased (82°-104°, P = .04). Median blood loss for patients who received TXA was 200 mL compared to 275 mL in patients who did not receive TXA (P = .66). Likewise there was no difference (P = .5) in the proportion of patients who required a transfusion between those who received TXA (2/6, 33%) and those who did not (3/6, 50%).Conclusion
In this small series, TKA can lead to significant clinical improvement for patients with KTS. Modern blood management techniques and a careful multidisciplinary care approach render TKA a reasonable option for select patients with KTS.Level of Evidence
Level IV case series, therapeutic. 相似文献6.
Study Design
Case series.Introduction
A salvaged limb is one that has undergone a major traumatic injury, followed by repeated surgical attempts in order to avoid amputation. Psychological recovery for individuals with lower extremity limb salvage has been examined in a number of studies. However, psychosocial reactions for individuals with upper extremity (UE) limb salvage are understudied in the literature.Purpose of the Study
The purpose of this study was to explore the process of psychosocial adaptation for 3 trauma cases after UE limb salvage.Methods
The Reactions to Impairment and Disability Inventory was used to assess psychosocial adaptation. Physical function outcomes (pain, range of motion, edema, sensation, and dexterity) are presented. The Disabilities of the Arm, Shoulder, and Hand measure was used to assess perceived disability. Medical and rehabilitation history are discussed for each case, in order to provide in-depth understanding of the impact of these injuries.Results
Reactions to injury varied across the cases; however, outcomes suggest that psychosocial adaptation may be influenced by the experience of pain, the ability to participate in valued roles and activities, and having a supportive social network.Discussion
For this population, therapists may consider emphasizing pain management, focusing on client-centered goals and interventions, and facilitating peer support. Providers should closely monitor patients for signs of poor adaptation, such as hand-hiding behaviors.Conclusions
This study is among the first to examine psychological outcomes for the UE limb salvage population. Future research would be beneficial to provide deeper understanding of the psychosocial challenges for these individuals. 相似文献7.
Guangwei Sun Jingjing Wu Qian Wang Qiang Liang Jian Jia Kai Cheng Guoliang Sun Zili Wang 《The Journal of arthroplasty》2019,34(4):789-800.e6
Background
The purpose of this study is to perform a meta-analysis to compare outcomes of venous thromboembolism (VTE) prophylaxis with low-molecular-weight heparin (LMWH) vs other anticoagulants in patients who received total knee (TKA) or total hip arthroplasty (THA).Methods
MEDLINE, Cochrane, EMBASE, and Google Scholar databases were searched until June 30, 2017 for eligible randomized controlled studies.Results
Thirty-two randomized controlled studies were included. LMWH provided better protection against VTE than placebo. In both TKA and THA patients, the rates of VTE were lower with factor Xa inhibitors than LMWH. In THA patients, the rate of deep vein thrombosis (DVT) was lower with factor Xa inhibitors than LMWH. In TKA patients, the rates of VTE and DVT were similar between LMWH and direct thrombin inhibitors. In THA patients, the rate of VTE was lower with direct thrombin inhibitors than with LMWH, while the DVT rates were similar. The pulmonary embolism rates were similar between all 3 classes of drugs in TKA and THR patients, as were the major bleeding rates. Nonmajor and minor bleeding rates were also similar between the 3 drug classes.Conclusion
LMWH is associated with a higher rate of VTE than factor Xa inhibitors in TKA and THA patients. Direct thrombin inhibitors are associated with a lower rate of VTE in THA patients, but their effectiveness with respect to DVT and pulmonary embolism prophylaxis is similar to that of LMWH in TKA and THA patients. 相似文献8.
Hidenori Tanikawa Mitsunori Tada Kengo Harato Kazunari Okuma Takeo Nagura 《The Journal of arthroplasty》2017,32(1):280-285
Background
Patellofemoral complications are one of the main problems after total knee arthroplasty (TKA). The design of the TKA component may affect the patellar biomechanics, which may be associated with this postoperative complication. The purpose of this study was to assess the influence of TKA and prosthesis designs on the patellar kinematics and patellofemoral pressure.Methods
Using fresh-frozen cadavers, we measured the patellofemoral pressure, patella offset, and patella tilt in the following 4 conditions: normal knee (patella replacement only), cruciate-retaining TKA, condylar-stabilizing TKA, and posterior-stabilized TKA.Results
The patellofemoral pressure increased significantly after the cruciate-retaining TKA and condylar-stabilizing TKA compared with the normal knee. The patella offset in the normal knee decreased with increasing knee flexion angles, while the patella offset in the TKA knees did not change significantly through the full range of motion. The amount of lateral patella tilt in the normal knee was significantly larger than the TKA knees in the full range of motion.Conclusion
Although the femoral components are designed to reproduce an anatomical patellar tracking, the physiological patellar kinematics were not observed. Relatively high patellofemoral pressure and kinematic change after TKA may be associated with postoperative complications such as the anterior knee pain. 相似文献9.
10.
Ugonna N. Ihekweazu Lydia Weitzler Timothy M. Wright Douglas E. Padgett 《The Journal of arthroplasty》2019,34(4):760-765
Background
The metaphyseal region of the bone has been recognized by its importance to the overall stability of a revision construct. Porous titanium metaphyseal sleeves to enhance biologic fixation can be used to manage bone loss encountered during revision total knee arthroplasty. While clinical results for metaphyseal sleeves are encouraging, there is little information on the extent to which biologic fixation is achievable with metaphyseal sleeves. We examined retrieved metaphyseal sleeves to determine the amount of bone ongrowth.Materials and Methods
We studied 14 tibial and 11 femoral retrieved metaphyseal sleeves from 16 typical arthroplasty patients. Prerevision radiographs were reviewed for the presence of biologic fixation to the sleeves and the stem canal fill ratio. Bone ongrowth was assessed regionally in the anterior, posterior, medial, and lateral areas of the retrieved implants.Results
Bone ongrowth covered on average 14.7 ± 3.4% of the entire porous surface of the tibial sleeves. The lateral and anterior surfaces had a significantly greater proportion (P < .05) of bone ongrowth compared with the posterior and medial surfaces of the tibial components. Bone ongrowth covered on average 21.3 ± 2.6% of the entire porous surface of the femoral sleeves. No differences were found in the proportion of bone ongrowth among the posterior, medial, lateral, and anterior surfaces of the femoral. No significant association was found between the clinical, demographic, or radiographic factors and the pattern or quantity of bone ongrowth.Discussion
This study demonstrates that sufficient fixation can be achieved with only limited amounts of bone ongrowth (14.7% in tibial sleeves and 21.3% in femoral sleeves). 相似文献11.
Daniel E. Goltz Sean P. Ryan Claire B. Howell David Attarian Michael P. Bolognesi Thorsten M. Seyler 《The Journal of arthroplasty》2019,34(5):857-864
Background
Evolving reimbursement models increasingly compel hospitals to assume costs for 90-day readmission after total joint arthroplasty. Although risk assessment tools exist, none currently reach the predictive performance required to accurately identify high-risk patients and modulate perioperative care accordingly. Although unlikely to perform adequately alone, the Elixhauser index is a set of 31 variables that may lend value in a broader model predicting 90-day readmission.Methods
Elixhauser comorbidities were examined in 10,022 primary unilateral total joint replacements, of which 4535 were hip replacements and 5487 were knee replacements, all performed between June 2013 and January 2018 at a single tertiary referral center. Data were extracted from electronic medical records using structured query language. After randomizing to derivation (80%) and validation (20%) subgroups, predictive models for 90-day readmission were generated and transformed into a system of weights based on each parameter’s relative performance.Results
We observed 497 90-day readmissions (5.0%) during the study period, which demonstrated independent associations with 14 of the 31 Elixhauser comorbidity groups. A score created from the sum of each patient’s weighted comorbidities did not lose substantial predictive discrimination (area under the curve: 0.653) compared to a comprehensive multivariable model containing all 31 unweighted Elixhauser parameters (area under the curve: 0.665). Readmission risk ranged from 3% for patients with a score of 0 to 27% for those with a score of 8 or higher.Conclusions
The Elixhauser comorbidity score already meets or exceeds the predictive discrimination of available risk calculators. Although insufficient by itself, this score represents a valuable summary of patient comorbidities and merits inclusion in any broader model predicting 90-day readmission risk after total joint arthroplasty.Level of Evidence
III. 相似文献12.
Joseph A. Gil Kerry Ebert Keri Blanchard Avi D. Goodman Joseph J. Crisco Julia A. Katarincic 《Journal of hand therapy》2019,32(1):80-85
Study Design
Basic research (biomechanics).Introduction
The high degree of motion that occurs at the thumb metacarpophalangeal (MCP) joint must be taken into account when immobilizing a partially torn or repaired thumb ulnar collateral ligament.Purpose of the Study
To determine the efficacy of a radial-based thumb MCP-stabilizing orthosis in resisting abduction across the thumb ulnar collateral ligament.Methods
Ten fresh cadaveric hands were mounted to a custom board. An anteroposterior radiograph of the thumb was obtained with a 2 N preload valgus force applied to the thumb, and the angle between the Kirschner wires was measured as a baseline. Subsequently, 20, 40, 60, 80, and 100 N valgus forces were applied 15 mm distal to the MCP joint. Anteroposterior radiographs of the thumb were obtained after each force was applied. The angle of displacement between the wires was measured and compared with the baseline angle. The angles were measured with an imaging processing tool. A custom radial-based thumb MCP-stabilizing orthosis was fashioned for each cadaveric thumb by a certified hand therapist. The aforementioned loading protocol was then repeated.Results
The radial-based thumb MCP-stabilizing orthosis significantly reduced mean abduction angles at each applied load.Discussion
We found that our orthosis, despite being hand-based and leaving the thumb IP and CMC joints free, significantly reduced mean abduction angles at each applied load.Conclusions
This investigation provides objective evidence that our radial-based thumb MCP-stabilizing orthosis effectively reduces the degree of abduction that occurs at the thumb MCP joint up to at least 100 N.Level of Evidence
n/a (cadaveric). 相似文献13.
Jordan S. Cohen Alex Gu Chapman Wei Shane A. Sobrio Jiabin Liu Matthew P. Abdel Peter K. Sculco 《The Journal of arthroplasty》2019,34(4):750-754
Background
Revision total knee arthroplasty (TKA) is an increasingly common procedure, but complication rates are higher than for primary TKA. A requirement for dialysis has been shown to predict postoperative complications in this patient population, but the impact of less severe, but clinically significant, renal impairment has not been addressed.Methods
A retrospective cohort study was conducted using the American College of Surgeons National Quality Improvement Program Database. All patients who underwent revision TKA between 2007 and 2014 were identified and the estimated glomerular filtration rate (eGFR) was calculated for each patient. The incidence and predictors of adverse events following surgery were evaluated with univariate and multivariate analyses where appropriate.Results
Patients with lower eGFRs (<60 mL/min) were found to develop more postoperative complications, including return to the operating room, postoperative pneumonia, urinary tract infection, sepsis, septic shock, and death. Decreased renal function was shown to be an independent risk factor for development of renal insufficiency, renal failure, and extended length of stay.Conclusion
Patients with decreased eGFRs have greater risk for many postoperative complications, but this increased risk is generally related to the greater number of comorbidities in this patient population. When controlling for these comorbidities, poor renal function is an independent risk factor for extended length of stay as well as postoperative renal injury and renal failure, and patients may benefit from perioperative measures to limit this excess renal risk. 相似文献14.
Shady S. Elmasry Carl W. Imhauser Timothy M. Wright Andrew D. Pearle Michael B. Cross David J. Mayman Geoffrey H. Westrich Peter K. Sculco 《The Journal of arthroplasty》2019,34(5):981-986.e1
Background
Whether anterior referencing (AR) or posterior referencing (PR) produces a more balanced flexion gap in total knee arthroplasty (TKA) using measured resection remains controversial. Our goal was to compare AR and PR in terms of (1) medial and lateral gaps at full extension and 90° of flexion, and (2) maximum medial and lateral collateral ligament (MCL and LCL) forces in flexion.Methods
Computational models of 6 knees implanted with posterior-stabilized TKA were virtually positioned with both AR and PR techniques. The ligament properties were standardized to achieve a balanced knee at full extension. Medial-lateral gaps were measured in response to varus and valgus loading at full extension and 90° of flexion; MCL and LCL forces were estimated during passive flexion.Results
At full extension, the maximum difference in the medial-lateral gap for both AR and PR was <1 mm in all 6 knee models. However, in flexion, only 3 AR and 3 PR models produced a difference in medial-lateral gap <2 mm. During passive flexion, the maximum MCL force ranged from 2 N to 87 N in AR and from 17 N to 127 N in PR models. The LCL was unloaded at >25° of flexion in all models.Conclusion
In measured resection TKA, neither AR nor PR better balance the ligaments and produce symmetrical gaps in flexion. Alternative bone resection techniques and rotation alignment targets are needed to achieve more predictable knee balance. 相似文献15.
Christopher J. Dy Derek S. Brown Hera Maryam Matthew R. Keller Margaret A. Olsen 《The Journal of arthroplasty》2019,34(4):619-625.e1
Background
Although Medicaid expansion has improved access to primary care services, its impact on surgical specialty utilization remains unclear. The aim of this study is to determine whether Medicaid expansion is associated with increased utilization rates of total hip arthroplasty (THA) and total knee arthroplasty (TKA) in Illinois (which expanded Medicaid) relative to Missouri (which did not expand Medicaid).Methods
Using administrative data sources, we analyzed 374,877 total hospitalizations (236,333 in Illinois and 138,544 in Missouri) for THA/TKA from 2011 to 2016 (Illinois’ Medicaid expansion date: January 1, 2014).Results
The percentage of THA/TKA funded by Medicaid in Illinois was 2.4% in 2013 and 3.9% in 2016 (Missouri 2013: 2.7%; 2016: 2.6%). A difference-in-difference analysis (adjusted for patient age and gender, county-level Area Deprivation Index, and number of orthopedic surgeons) demonstrated a statistically significant increase in Medicaid-funded THA/TKA in Illinois in 2016 compared to 2013 (P = .012).Conclusion
Our study demonstrates that Medicaid expansion in Illinois was associated with increased utilization of THA and TKA. Further study is needed to understand the impact of Medicaid expansion in other states and for other procedures. 相似文献16.
Study Design
Case series.Introduction
Upper extremity (UE) trauma and subsequent immobilization affects functional performance.Purpose of the Study
Determine the usefulness and feasibility of unilateral hand training (UHT) on improving functional performance in patients with UE trauma.Methods
Nine participants received UHT within 10 days of immobilization. Functional performance, dexterity, grip, and pinch strength were measured at initial and 4-week visits. Qualitative interviews were coded to develop themes.Results
All Jebsen-Taylor hand function test subtests improved from pretest to post-test. Disabilities of the Arm, Shoulder and Hand scores of all 9 participants improved. Functional performance was more impaired for participants with dominant UE injury. Four themes emerged: participants were forced to alter or avoid most daily activities, had an increased dependency on others, took longer to perform activities, and felt UHT decreased the impact of UE trauma on function.Discussion
Functional performance was impaired for all participants. Participants believed that UHT was useful and contributed to improved function.Conclusion
This case series tracked a comprehensive intervention based on a holistic activities of daily living framework that considered the nuances of individual complexities of immobilization following hand trauma. Knowledge from this study supports an early intervention like UHT to educate clients on effective strategies to improve immediate activities of daily living functioning and potentially prevent longer term impairments. 相似文献17.
Nikolaus Johannes Wachter Martin Mentzel Gert D. Krischak Joachim Gülke 《Journal of hand therapy》2019,32(1):64-70
Study Design
A within-subject research design was used in this study. The difference of the range of motion (ROM) with and without ulnar nerve block was analyzed.Introduction
For the clinical evaluation of the functional effects of ulnar nerve palsy at the hand the relevance of clinical tests is in discussion.Purpose of the Study
The aim of the study was to evaluate the predictive value of 2 clinical tests for a simulated ulnar nerve lesion by motion analysis with a sensor glove.Methods
In 28 healthy subjects, dynamic measurements of the finger joints were performed by a sensor glove with and without ulnar nerve block at the wrist. In the 0° metacarpophalangeal (MCP) stabilization test, the subjects were asked to stabilize the MCP joints actively in 0° while moving the interphalangeal joints, whereas at the 90° MCP stabilization test, the subjects stabilized the MCP joints actively in the 90° position.Results
In the 0° MCP stabilization test, no remarkable changes of the ROM were found at the MCP joints; at the proximal interphalangeal joints 2-5, the ROM decreased with ulnar nerve block, significantly at the index, middle, and ring fingers (P < .05). In the 90° MCP stabilization test, the average ROM of the MCP joints 2-5 significantly increased with ulnar nerve block (P < .05), whereas at the PIP joints, the average ROM decreased (P < .05).Discussion
The 90° MCP stabilization test had a high predictive value for the discrimination between healthy subjects and subjects with a simulated peripheral ulnar nerve lesion.Conclusions
The results could be relevant for the determination of the functional effect of ulnar nerve palsy and the quantification of clawing in hand rehabilitation.Level of Evidence
II. 相似文献18.
Background
Patients commonly report difficulty kneeling after total knee arthroplasty (TKA). The purpose of this study was to retrospectively assess patients’ ability to kneel after TKA and to prospectively determine whether patients with reported difficulty can be taught to kneel.Methods
Attempts were made to reach 307 consecutive TKAs in 255 adult patients who were 18-24 months after surgery. Patients were surveyed for their ability to kneel. Those who reported difficulty kneeling were offered participation in a kneeling protocol. At the conclusion of the protocol, participants were surveyed again for their ability to kneel.Results
Of the 307 consecutive TKAs, 288 knees (94%) answered the survey. Of them, 196 knees (68%) could kneel with minor or no difficulty without any specific training. And 77 knees (27%) reported at least some difficulty kneeling and were eligible for participation in the protocol. Pain or discomfort was the most commonly reported reason for difficulty kneeling. Of these 77 knees, 43 knees (56%) participated. Thirty-six knees (84%) completed all or most of the protocol. All patients who completed all or most of the protocol were then able to kneel, and none reported significant difficulty kneeling. On average, participants improved 1.4 levels.Conclusion
In this cohort, 68% of knees could kneel after TKA without any specific training. Of those who had at least some difficulty kneeling, all who participated were able to kneel after a simple kneeling protocol, although 44% of eligible patients did not participate. This study suggests that kneeling should be included in postoperative TKA rehabilitation. 相似文献19.
Fabrizio Matassi Andrea Cozzi Lepri Matteo Innocenti Luigi Zanna Roberto Civinini Massimo Innocenti 《The Journal of arthroplasty》2019,34(4):676-681
Background
Total knee arthroplasty (TKA) in patients with post-traumatic extra-articular deformity (EAD) is difficult to manage using conventional instrumentation techniques. In this study, we evaluate whether accelerometer navigation system can be a valuable option to make accurate bone resections and restore the neutral mechanical axis in complex TKA patients with EAD.Methods
From May 2015 to June 2017, 18 consecutive TKA were performed in 18 patients with knee osteoarthritis with associated EAD. An accelerometer-based navigation system was used to guide tibial and femoral resection in the coronal and sagittal plane. Postoperative lower limb alignment in coronal plane and component position in coronal and sagittal plane was measured through full-leg weight-bearing X-ray. Clinical score were recorded using the Knee Society Score at the final follow-up.Results
The mean hip-knee-ankle angle was 0.9° ± 1.4° varus alignment. The coronal alignment of the femoral component was 89.2° ± 1.9°, and the coronal alignment of the tibial component was 89.4° ± 2.1°. The sagittal alignment of the femoral component was 93.2°± 1.9°, and the sagittal alignment of the tibial component was 84.4° ± 3.1°. At the final follow-up, the Knee Society Score was 89 points (range, 82-100), and the functional score was 86.7 points (range, 60-100). No intraoperative and postoperative surgical complications were reported using this technology.Conclusion
Accelerometer-based navigation is accurate in achieving neutral mechanical alignment and optimal implant position after TKA in patients with EAD. This system should be considered a valuable option to the more complex technique of computer navigation or robotic surgery. 相似文献20.
Alex Gu Michael-Alexander Malahias Vanni Strigelli Allina A. Nocon Thomas P. Sculco Peter K. Sculco 《The Journal of arthroplasty》2019,34(5):1013-1024