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https://www.readbyqxmd.com/read/28298056/outcomes-after-biologically-augmented-isolated-meniscal-repair-with-marrow-venting-are-comparable-with-those-after-meniscal-repair-with-concomitant-anterior-cruciate-ligament-reconstruction
#1
Chase S Dean, Jorge Chahla, Lauren M Matheny, Justin J Mitchell, Robert F LaPrade
BACKGROUND: Meniscal repair in the setting of anterior cruciate ligament (ACL) reconstruction has demonstrated superior outcomes compared with isolated meniscal repair. Limited evidence exists for the effects of biological augmentation in isolated meniscal repair, particularly as compared with meniscal repair with concomitant ACL reconstruction. Purpose/Hypothesis: The purpose of this study was to compare the outcomes and survivorship of meniscal repair in 2 cohorts of patients: meniscal repair with biological augmentation using a marrow venting procedure (MVP) of the intercondylar notch, and meniscal repair with concomitant ACL reconstruction...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28280907/high-prevalence-of-knee-osteoarthritis-at-a-minimum-10-year-follow-up-after-knee-dislocation-surgery
#2
Gilbert Moatshe, Grant J Dornan, Tom Ludvigsen, Sverre Løken, Robert F LaPrade, Lars Engebretsen
PURPOSE: Long-term outcomes and the prevalence of osteoarthritis after surgical treatment of knee dislocations are lacking in the literature. The purpose of this study was to investigate the prevalence of knee osteoarthritis and knee function at a minimum of 10 years after knee dislocation surgery. METHODS: Sixty-five patients surgically treated for knee dislocations at a single level I trauma center between May 1996 and December 2004 were evaluated at a minimum of 10 years...
March 9, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28224064/anterior-horn-meniscal-repair-using-an-outside-in-suture-technique
#3
Travis J Menge, Chase S Dean, Jorge Chahla, Justin J Mitchell, Robert F LaPrade
The menisci are important structures within the knee that play a critical role in maintaining proper stability, load distribution, and joint lubrication. Injury to the menisci has been found to significantly alter the complex biomechanics of the knee, and thus affect the health and longevity of the native joint. Tears involving the anterior horn are increasingly recognized as an important pathology. Although early treatment of meniscal tears focused primarily on removal of the injured tissue, recent attention on the long-term consequences of partial or total meniscectomy has led to increased attempts at meniscus repair whenever possible...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28210653/biologic-approaches-for-the-treatment-of-partial-tears-of-the-anterior-cruciate-ligament-a-current-concepts-review
#4
Ignacio Dallo, Jorge Chahla, Justin J Mitchell, Cecilia Pascual-Garrido, John A Feagin, Robert F LaPrade
BACKGROUND: Anterior cruciate ligament reconstruction (ACLR) has been established as the gold standard for treatment of complete ruptures of the anterior cruciate ligament (ACL) in active, symptomatic individuals. In contrast, treatment of partial tears of the ACL remains controversial. Biologically augmented ACL-repair techniques are expanding in an attempt to regenerate and improve healing and outcomes of both the native ACL and the reconstructed graft tissue. PURPOSE: To review the biologic treatment options for partial tears of the ACL...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28205540/anatomical-characteristics-and-biomechanical-properties-of-the-oblique-popliteal-ligament
#5
Xiang-Dong Wu, Jin-Hui Yu, Tao Zou, Wei Wang, Robert F LaPrade, Wei Huang, Shan-Quan Sun
This anatomical study sought to investigate the morphological characteristics and biomechanical properties of the oblique popliteal ligament (OPL). Embalmed cadaveric knees were used for the study. The OPL and its surrounding structures were dissected; its morphology was carefully observed, analyzed and measured; its biomechanical properties were investigated. The origins and insertions of the OPL were relatively similar, but its overall shape was variable. The OPL had two origins: one originated from the posterior surface of the posteromedial tibia condyle, merged with fibers from the semimembranosus tendon, the other originated from the posteromedial part of the capsule...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28162838/evidence-for-the-use-of-cell-based-therapy-for-the-treatment-of-osteonecrosis-of-the-femoral-head-a-systematic-review-of-the-literature
#6
Nicolas S Piuzzi, Jorge Chahla, John B Schrock, Robert F LaPrade, Cecilia Pascual-Garrido, Michael A Mont, George F Muschler
BACKGROUND: Cell-therapy has been promoted among the therapeutic arsenal that can aid in bone formation and remodeling, in early stages of osteonecrosis of the femoral head (ONFH). The purpose of this systematic review was to assess the evidence supporting the (1) clinical efficacy; (2) structural modifying effect, as evaluated radiographically; (3) revision rates; and (4) safety of cell-therapy for the treatment of ONFH. METHODS: A systematic review was performed including studies with a level-of-evidence of III or higher...
January 12, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28065868/clinical-impact-of-positive-propionibacterium-acnes-cultures-in-orthopedic-surgery
#7
V Lavergne, M Malo, C Gaudelli, M Laprade, S Leduc, P Laflamme, D M Rouleau
BACKGROUND: The clinical significance of a positive culture to Propionibacterium acnes in orthopedic specimens remains unclear, whether about its role as a contaminant or a pathogen, or its impact as a coinfectant. Therefore, we performed a retrospective study to provide a more accurate description of the clinical impact of P. acnes in an orthopedic population aiming to determine: 1) if there is a clinical difference between P. acnes infection and contamination? 2) If there is a clinical difference between P...
January 5, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28063761/comparison-of-radiographs-and-computed-tomography-for-the-screening-of-anterior-inferior-iliac-spine-impingement
#8
Broc R Schindler, Melanie B Venderley, Jacob D Mikula, Jorge Chahla, Grant J Dornan, Travis Lee Turnbull, Robert F LaPrade, Marc J Philippon
PURPOSE: To compare radiographic and 3-dimensional (3D) computed tomography (CT) imaging modalities for the screening of anterior inferior iliac spine (AIIS) impingement by establishing imaging measurement related to the AIIS. METHODS: Anteroposterior and false-profile radiographs and 3D CT scans were obtained on 10 human cadaveric pelvises. On the anteroposterior view for each methodology, 2 measurements were calculated: distance to the most lateral AIIS from the 12 o'clock position on the acetabular rim, and the angle between the lateral AIIS and the sagittal plane...
January 4, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28043749/an-anatomic-analysis-of-mid-anterior-and-anterolateral-approaches-for-hip-arthrocentesis-a%C3%A2-male-cadaveric-study
#9
Jacob D Mikula, Jason M Schon, Chase S Dean, Jorge Chahla, Renato Locks, Alex W Brady, Robert F LaPrade, Marc J Philippon
PURPOSE: To determine the accuracy and safety of non-image-guided modified mid-anterior and anterolateral approaches to the hip joint for arthrocentesis. METHODS: Six pairs (n = 12) of human cadaveric hemipelvises underwent methylene blue hip injections through either a mid-anterior or an anterolateral approach. The distance from the mid-anterior approach to the lateral femoral cutaneous nerve (LFCN) was measured. Needle orientation was defined by a combination of 2 angles, calculated by the computer software analysis of digitized points...
March 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28012152/erratum-to-bone-marrow-aspirate-concentrate-for-the-treatment-of-osteochondral-lesions-of-the-talus-a-systematic-review-of-outcomes
#10
Jorge Chahla, Mark E Cinque, Jason M Schon, Daniel J Liechti, Lauren M Matheny, Robert F LaPrade, Thomas O Clanton
No abstract text is available yet for this article.
December 2016: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/27999730/post-operative-rehabilitation-of-grade-iii-medial-collateral-ligament-injuries-evidence-based-rehabilitation-and-return-to-play
#11
Catherine A Logan, Luke T O'Brien, Robert F LaPrade
The medial collateral ligament is the most commonly injured ligament of the knee, with injury generally sustained in the athletic population as a result of valgus contact with or without tibial external rotation. The capacity of the medial collateral ligament to heal has been demonstrated in both laboratory and clinical studies; however, complete ruptures heal less consistently and may result in persistent instability. When operative intervention is deemed necessary, anatomical medial knee reconstruction is recommended...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27920331/3d-model-analysis-of-ankle-flexion-on-anatomic-reduction-of-a-syndesmotic-injury
#12
Jason M Schon, Jacob D Mikula, Jonathon D Backus, Melanie B Venderley, Grant J Dornan, Robert F LaPrade, Thomas O Clanton
BACKGROUND: The effect of ankle positioning during suture-button fixation for syndesmosis repair on range of motion (ROM) and anatomic reduction has yet to be investigated. The purpose of this cadaveric study was to compare the effects of 3 different ankle positions during suture-button repair on volumetric reduction of the syndesmosis, fibular displacement, and ROM of the ankle using 3-dimensional computed tomography (CT) analysis. The null hypothesis was that ankle position during fixation would not affect syndesmotic volume restoration, fibular displacement, or ROM...
December 5, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27919916/posterior-meniscal-root-repairs-outcomes-of-an-anatomic-transtibial-pull-out-technique
#13
Robert F LaPrade, Lauren M Matheny, Samuel G Moulton, Evan W James, Chase S Dean
BACKGROUND: Outcomes after transtibial pull-out repair for posterior meniscal root tears remain underreported, and factors that may affect outcomes are unknown. Purpose/Hypothesis: The purpose of this study was to compare patient-centered outcomes after transtibial pull-out repair for posterior root tears in patients <50 and ≥50 years of age. We hypothesized that improvement in function and activity level at minimum 2-year follow-up would be similar among patients <50 years of age compared with patients ≥50 years and among patients undergoing medial versus lateral root repairs...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27872126/multiple-ligament-reconstruction-femoral-tunnels
#14
Gilbert Moatshe, Alex W Brady, Erik L Slette, Jorge Chahla, Travis Lee Turnbull, Lars Engebretsen, Robert F LaPrade
BACKGROUND: Knee dislocations often require multiple concurrent ligament reconstructions, which involve creating several tunnels in the distal femur. Therefore, the risk of tunnel convergence is increased because of the limited bone volume within the distal aspect of the femur. PURPOSE: To assess the risk of tunnel convergence and determine the optimal reconstruction tunnel orientations for multiple ligament reconstructions in the femur. STUDY DESIGN: Descriptive laboratory study...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27871653/surgical-management-and-treatment-of-the-anterior-cruciate-ligament-posterolateral-corner-injured-knee
#15
REVIEW
Nicholas I Kennedy, Christopher M LaPrade, Robert F LaPrade
Posterolateral knee injuries occur more commonly than in the past. These injuries most commonly occur concurrent with cruciate ligament tears. The main stabilizers of the posterolateral knee are the fibular collateral ligament, the popliteus tendon, and the popliteofibular ligament. These static stabilizers function to prevent increased varus, external rotation, and coupled posterolateral rotation of the knee. The most important clinical tests to diagnose posterolateral knee injuries are the varus stress test, posterolateral drawer, and dial tests...
January 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27813021/bone-marrow-aspirate-concentrate-for-the-treatment-of-osteochondral-lesions-of-the-talus-a-systematic-review-of-outcomes
#16
REVIEW
Jorge Chahla, Mark E Cinque, Jason M Shon, Daniel J Liechti, Lauren M Matheny, Robert F LaPrade, Thomas O Clanton
BACKGROUND: The goal of this perform a systematic review on the outcomes of bone marrow aspirate concentrate (BMAC) for the treatment of chondral defects and osteoarthritis (OA) of the talus. RESULTS: The systematic search performed identified 47 studies after duplicates were removed. After inclusion criteria were applied four studies were considered for insightful analysis for the treatment of focal chondral defects in the foot and ankle with the use of BMAC. Three studies were retrospective and one study was prospective in nature...
December 2016: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/27733556/a-3-d-ct-analysis-of-screw-and-suture-button-fixation-of-the-syndesmosis
#17
Jason M Schon, Brady T Williams, Melanie B Venderley, Grant J Dornan, Jonathon D Backus, Travis Lee Turnbull, Robert F LaPrade, Thomas O Clanton
BACKGROUND: Historically, syndesmosis injuries have been repaired with screw fixation; however, some suggest that suture-button constructs may provide a more accurate anatomic and physiologic reduction. The purpose of this study was to compare changes in the volume of the syndesmotic space following screw or suture-button fixation using a preinjury and postoperative 3-D computed tomography (CT) model. The null hypothesis was that no difference would be observed among repair techniques...
February 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/27729320/overlap-between-anterior-cruciate-ligament-and-anterolateral-meniscal-root-insertions
#18
Brett D Steineman, Samuel G Moulton, Tammy L Haut Donahue, Cristián A Fontboté, Christopher M LaPrade, Tyler R Cram, Chase S Dean, Robert F LaPrade
BACKGROUND: The anterolateral meniscal root (ALMR) has been reported to intricately insert underneath the tibial insertion of the anterior cruciate ligament (ACL). Previous studies have begun to evaluate the relationship between the insertion areas and the risk of iatrogenic injuries; however, the overlap of the insertions has yet to be quantified in the sagittal and coronal planes. PURPOSE: To investigate the insertions of the human tibial ACL and ALMR using scanning electron microscopy (SEM) and to quantify the overlap of the ALMR insertion in the coronal and sagittal planes...
February 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27709059/medial-opening-wedge-proximal-tibial-osteotomy
#19
Jorge Chahla, Chase S Dean, Justin J Mitchell, Gilbert Moatshe, Raphael Serra Cruz, Robert F LaPrade
Genu varus malalignment can lead to medial compartment overload and progression of ipsilateral compartment osteoarthritis. To slow this process, a medial opening wedge proximal tibial osteotomy (PTO) can be performed. This type of PTO is indicated in patients with genu varus malalignment and isolated medial compartment osteoarthritis of the knee, prior to or concurrent with medial compartment cartilage procedures or meniscal transplants, chronic posterolateral corner deficiency, or chronic anterior cruciate ligament deficiency...
August 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27709054/medial-meniscus-radial-tear-a-transtibial-2-tunnel-technique
#20
Marco Nitri, Jorge Chahla, David Civitarese, Sanjeev Bhatia, Samuel G Moulton, Christopher M LaPrade, Robert F LaPrade
Complete radial tears of the medial meniscus significantly decrease the meniscal tissue's ability to dissipate tibiofemoral loads and have been described as functionally similar to a total meniscectomy, predisposing patients to early osteoarthritis. At present, no consensus exists regarding the optimal surgical treatment of a radial meniscal tear. Current repair techniques have led to a reportedly high rate of incomplete healing or healing of the meniscus in a nonanatomic, gapped position, which compromises its ability to withstand hoop stresses...
August 2016: Arthroscopy Techniques
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