9,191 results match your criteria American Journal of Sports Medicine[Journal]


Preoperative Medial Meniscal Extrusion Is Associated With Patient-Reported Outcomes After Medial Opening Wedge High Tibial Osteotomy.

Am J Sports Med 2020 Jul 6:363546520933834. Epub 2020 Jul 6.

Department of Orthopedic Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.

Background: Although the medial compartment continues to sustain some loading after medial opening wedge high tibial osteotomy (MOWHTO) in varus-deformed knees, no studies have examined the relationship between medial meniscal extrusion (MME) and patient-reported outcome measures after MOWHTO.

Purpose: To examine whether compartmental baseline MME was associated with patient-reported outcome measures after MOWHTO.

Study Design: Cohort study; Level of evidence, 3. Read More

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http://dx.doi.org/10.1177/0363546520933834DOI Listing

Utility of Neuromuscular Electrical Stimulation to Preserve Quadriceps Muscle Fiber Size and Contractility After Anterior Cruciate Ligament Injuries and Reconstruction: A Randomized, Sham-Controlled, Blinded Trial.

Am J Sports Med 2020 Jul 6:363546520933622. Epub 2020 Jul 6.

Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington, Vermont, USA.

Background: Anterior cruciate ligament (ACL) injuries and reconstruction (ACLR) promote quadriceps muscle atrophy and weakness that can persist for years, suggesting the need for more effective rehabilitation programs. Whether neuromuscular electrical stimulation (NMES) can be used to prevent maladaptations in skeletal muscle size and function is unclear.

Purpose: To examine whether early NMES use, started soon after an injury and maintained through 3 weeks after surgery, can preserve quadriceps muscle size and contractile function at the cellular (ie, fiber) level in the injured versus noninjured leg of patients undergoing ACLR. Read More

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http://dx.doi.org/10.1177/0363546520933622DOI Listing

Risk Factors for Grade 3 Pivot Shift in Knees With Acute Anterior Cruciate Ligament Injuries: A Comprehensive Evaluation of the Importance of Osseous and Soft Tissue Parameters From the SANTI Study Group.

Am J Sports Med 2020 Jul 6:363546520935866. Epub 2020 Jul 6.

Kansas City University of Medicine and Biosciences, Kansas City, Missouri, USA.

Background: Preoperative grade 3 pivot shift has been reported to be associated with higher rates of anterior cruciate ligament (ACL) failure, persistent instability, and inferior patient-reported outcomes. The etiology of a high-grade pivot shift is multifactorial, and numerous factors have been suggested to be responsible. More attention has recently been focused on injury to the anterolateral structures (ALS) as a risk factor for a grade 3 pivot shift. Read More

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http://dx.doi.org/10.1177/0363546520935866DOI Listing

Iliopsoas Tenotomy During Hip Arthroscopy: A Systematic Review of Postoperative Outcomes.

Am J Sports Med 2020 Jul 6:363546520922551. Epub 2020 Jul 6.

Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.

Background: Arthroscopic iliopsoas tendon release is a surgical treatment option for painful snapping hips, although it has been associated with controversy surrounding potential complications including decreased hip flexion strength, iatrogenic hip instability, and iliopsoas atrophy.

Purpose: To systematically assess the efficacy and safety of arthroscopic iliopsoas tenotomy during hip arthroscopic surgery as an intervention for painful snapping hips.

Study Design: Systematic review; Level of evidence, 4. Read More

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http://dx.doi.org/10.1177/0363546520922551DOI Listing

Long-term Outcomes and Survivorship of Fresh-Frozen Meniscal Allograft Transplant With Soft Tissue Fixation: Minimum 10-Year Follow-up Study.

Am J Sports Med 2020 Jul 6:363546520932923. Epub 2020 Jul 6.

IRCCS Istituto Ortopedico Rizzoli, Clinica Ortopedica e Traumatologica II, Bologna, Italy.

Background: Meniscal allograft transplant (MAT) is considered an effective procedure for reducing pain and improving knee function. Nevertheless, the current knowledge regarding the results of MAT is limited to short- to mid-term follow-up studies, especially for arthroscopic techniques.

Purpose: To evaluate the long-term clinical outcomes, reoperations, and failures with a minimum follow-up of 10 years after fresh-frozen MAT performed arthroscopically with soft tissue fixation. Read More

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http://dx.doi.org/10.1177/0363546520932923DOI Listing

Hip Arthroscopy in Smokers: A Systematic Review of Patient-Reported Outcomes and Complications in 18,585 Cases.

Am J Sports Med 2020 Jul 6:363546520922854. Epub 2020 Jul 6.

Department of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland, Ohio, USA.

Background: Although the negative effects of smoking have been documented for other types of arthroscopic procedures, there is limited information regarding its influence on hip arthroscopy outcomes.

Purpose: To examine the effect of smoking on the following outcomes after hip arthroscopy: patient-reported outcomes (PROs), the degree of improvement in PROs relative to baseline, complication rates, and rates of revision arthroscopy and/or conversion to total hip arthroplasty (THA).

Study Design: Systematic review. Read More

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http://dx.doi.org/10.1177/0363546520922854DOI Listing

Tendon Regeneration After Partial-Thickness Peroneus Longus Tendon Harvesting: Magnetic Resonance Imaging Evaluation and In Vivo Animal Study.

Am J Sports Med 2020 Jul 6:363546520933628. Epub 2020 Jul 6.

Department of Orthopedic Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea.

Background: In recent years, the use of the anterior half of the peroneus longus tendon (AHPLT) as an autograft source for ligament reconstruction has gained popularity. However, no reports are available regarding tendon regeneration after harvesting of the AHPLT.

Hypothesis: When half of the tendon is preserved during tendon harvesting, the quality of the regenerated tendon is better than that of the regenerated tendon after full-thickness harvesting. Read More

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http://dx.doi.org/10.1177/0363546520933628DOI Listing

Musculotendinous Junction Injuries of the Proximal Biceps Femoris: A Prospective Study of 64 Patients Treated Surgically.

Am J Sports Med 2020 Jul;48(8):1974-1982

Department of Trauma and Orthopaedic Surgery, University College Hospital, London, UK.

Background: Injuries to the hamstring complex most commonly involve the proximal musculotendinous junction of the long head of the biceps femoris (MTJ-BFlh). Nonoperative management of these injuries is associated with prolonged rehabilitation and high risk of recurrence. To our knowledge, the surgical management of acute MTJ-BFlh injuries has not been previously reported. Read More

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http://dx.doi.org/10.1177/0363546520926999DOI Listing

Modified Jobe Versus Docking Technique for Elbow Ulnar Collateral Ligament Reconstruction: A Systematic Review and Meta-analysis of Clinical Outcomes.

Am J Sports Med 2020 Jun 29:363546520921160. Epub 2020 Jun 29.

Department of Orthopaedic Surgery, Fairfax Inova Hospital, Falls Church, Virginia, USA.

Background: The modified Jobe and docking techniques are the most common techniques used for elbow ulnar collateral ligament (UCL) reconstruction. Previous systematic reviews have suggested that the docking technique results in superior outcomes as compared with the Jobe (figure-of-8) technique. However, these included results from earlier studies in which the flexor-pronator mass (FPM) was detached and an obligatory submuscular ulnar nerve transposition was performed. Read More

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http://dx.doi.org/10.1177/0363546520921160DOI Listing

Osteochondritis Dissecans of the Knee: An Interrater Reliability Study of Magnetic Resonance Imaging Characteristics.

Am J Sports Med 2020 Jun 25:363546520930427. Epub 2020 Jun 25.

Investigation performed at the Hospital for Special Surgery, New York, New York, USA, and Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.

Background: Imaging characteristics of osteochondritis dissecans (OCD) lesions quantified by magnetic resonance imaging (MRI) are often used to inform treatment and prognosis. However, the interrater reliability of clinician-driven MRI-based assessment of OCD lesions is not well documented.

Purpose: To determine the interrater reliability of several historical and novel MRI-derived characteristics of OCD of the knee in children. Read More

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http://dx.doi.org/10.1177/0363546520930427DOI Listing

Biceps Tenodesis for Superior Labrum Anterior-Posterior Tear in the Overhead Athlete: A Systematic Review.

Am J Sports Med 2020 Jun 24:363546520921177. Epub 2020 Jun 24.

Department of Orthopaedic Surgery, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA.

Background: Superior labrum anterior-posterior (SLAP) lesion is a common shoulder injury, particularly in overhead athletes. While surgical management has traditionally consisted of SLAP repair, high rates of revision and complications have led to alternative techniques, such as biceps tenodesis (BT). While BT is commonly reserved for older nonoverhead athletes, indications for its use have expanded in recent years. Read More

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http://dx.doi.org/10.1177/0363546520921177DOI Listing

Long-term Results of the Arthroscopic Bankart Repair for Recurrent Anterior Shoulder Instability in Patients Older Than 40 Years: A Comparison With the Open Latarjet Procedure.

Am J Sports Med 2020 Jun 24:363546520931090. Epub 2020 Jun 24.

Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.

Background: Long-term results of the arthroscopic Bankart repair in patients older than 40 years are unknown and may be favorable in terms of postoperative glenohumeral arthritis as opposed to the long-term results of the open Latarjet procedure in patients older than 40 years.

Purpose: To analyze our long-term results of the arthroscopic Bankart repair for recurrent anterior shoulder instability in patients older than 40 years of age and to compare these results with previously published long-term results of the Latarjet procedure in a cohort of similar age.

Study Design: Cohort study; Level of evidence, 3. Read More

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http://dx.doi.org/10.1177/0363546520931090DOI Listing

Radiological Identification of Injury to the Kaplan Fibers of the Iliotibial Band in Association With Anterior Cruciate Ligament Injury.

Am J Sports Med 2020 Jun 24:363546520931854. Epub 2020 Jun 24.

OrthoSport Victoria Research Unit, Richmond, Australia.

Background: Recent biomechanical studies have demonstrated that the Kaplan fibers (KFs) of the iliotibial band play a role in the control of anterolateral rotation of the knee. However, controversy exists regarding whether the KFs are injured in conjunction with anterior cruciate ligament (ACL) injury.

Purpose: To establish the prevalence of radiological injury to the KFs in the ACL-injured knee; to evaluate the effect of the time interval between injury and magnetic resonance imaging (MRI) on diagnosis of KF injury; and to assess for any association between KF injury and other qualitative radiological findings. Read More

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http://dx.doi.org/10.1177/0363546520931854DOI Listing

A Combination Treatment of Raloxifene and Vitamin D Enhances Bone-to-Tendon Healing of the Rotator Cuff in a Rat Model.

Am J Sports Med 2020 Jun 23:363546520927015. Epub 2020 Jun 23.

Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.

Background: Tearing and degeneration of the rotator cuff at the tendon-to-bone junction are common in adults aged ≥50 years. Few studies have reported on the relationship between estrogen and the rotator cuff enthesis. In addition to preventing bone loss, selective estrogen receptor modulators have been shown to improve tendon and muscle quality. Read More

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http://dx.doi.org/10.1177/0363546520927015DOI Listing

Comparison of Patellofemoral Kinematics and Stability After Medial Patellofemoral Ligament and Medial Quadriceps Tendon-Femoral Ligament Reconstruction.

Am J Sports Med 2020 Jun 18:363546520930703. Epub 2020 Jun 18.

Carl J. Shapiro Department of Orthopaedic Surgery, Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.

Background: There is a lack of evidence regarding the optimum extensor-sided fixation method for medial patellofemoral ligament (MPFL) reconstruction. There is increased interest in avoiding patellar drilling via soft tissue-only fixation to the distal quadriceps, thus reconstructing the medial quadriceps tendon-femoral ligament (MQTFL). The biomechanical implications of differing extensor-sided fixation constructs remain unknown. Read More

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http://dx.doi.org/10.1177/0363546520930703DOI Listing

Maximum Bridging Suture Tension Provides Better Clinical Outcomes in Transosseous-Equivalent Rotator Cuff Repair: A Clinical, Prospective Randomized Comparative Study.

Am J Sports Med 2020 Jun 18:363546520930425. Epub 2020 Jun 18.

Department of Orthopedic Surgery, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Republic of Korea.

Background: Some studies reporting clinical outcomes after transosseous-equivalent (TOE) repair have attributed type II rotator cuff failure to excessive bridging suture tension, as it can cause overloading on the medial row. In a previous biomechanical cadaveric study, increasing bridging suture tension over 90 N did not improve the contact area and ultimate failure load of the TOE construct, despite increasing the contact force and contact pressure.

Purpose: To compare the clinical outcomes of different bridging suture tensions after TOE rotator cuff repair based on the results of a previous biomechanical study. Read More

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http://dx.doi.org/10.1177/0363546520930425DOI Listing

Combined Correction of Tibial Torsion and Tibial Tuberosity-Trochlear Groove Distance by Supratuberositary Torsional Osteotomy of the Tibia.

Am J Sports Med 2020 Jun 18:363546520929687. Epub 2020 Jun 18.

Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.

Background: Increased external tibial torsion and tibial tuberosity-trochlear groove distance (TTTG) affect patellofemoral instability and can be corrected by tibial rotational osteotomy and tibial tuberosity transfer. Thus far, less attention has been paid to the combined correction of tibial torsion and TTTG by supratuberositary osteotomy.

Purpose: To quantify the effect of a supratuberositary torsional osteotomy on TTTG. Read More

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http://dx.doi.org/10.1177/0363546520929687DOI Listing

The Invisible MGHL Test: Diagnostic Value and Benefits for the Repair of Retracted Subscapularis Tears.

Am J Sports Med 2020 Jun 18:363546520929695. Epub 2020 Jun 18.

Ramsay Générale de Santé, Jean Mermoz Private Hospital, Centre Orthopédique Santy, Lyon, France.

Background: Some full-thickness subscapularis tendon tears and partial tears of the deep layer are difficult to characterize, leading to misdiagnosis.

Purpose: To evaluate the association between displacement of the middle glenohumeral ligament (MGHL) and retracted tears of the subscapularis tendon as a possible test to improve diagnosis.

Study Design: Cross-sectional study; Level of evidence, 3. Read More

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http://dx.doi.org/10.1177/0363546520929695DOI Listing

Does Concomitant Lumbar Spine Disease Adversely Affect the Outcomes of Patients Undergoing Hip Arthroscopy?

Am J Sports Med 2020 Jun 18:363546520929344. Epub 2020 Jun 18.

Division of Sports Medicine, Department of Orthopedic Surgery, NYU Langone Health, New York, New York, USA.

Background: The practice of hip arthroscopy is increasing in popularity, which has highlighted the importance of identifying risk factors that predict hip arthroscopy outcomes. The literature suggests that lumbar spine disease is an independent risk factor for poorer outcomes following total hip arthroplasty; however, the effect of lumbar spine disease on hip arthroscopy outcomes has not been fully investigated. At present, there is a paucity of literature investigating the effect of coexisting hip and lumbar spine disease on outcomes after hip arthroscopy. Read More

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http://dx.doi.org/10.1177/0363546520929344DOI Listing

Scapular Morphologic Characteristics and Rotator Cuff Tear Pattern Are Independently Associated With Chronic Pseudoparalyis: A Matched-Pair Analysis of Patients With Massive Rotator Cuff Tears.

Am J Sports Med 2020 Jun 16:363546520929353. Epub 2020 Jun 16.

Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.

Background: It is unclear which structural parameters determine the development or the absence of chronic pseudoparalysis (PP) in patients with massive rotator cuff tears (mRCTs).

Purpose: To determine whether scapular morphologic characteristics and extent of rotator cuff tearing are independent factors associated with chronic PP.

Study Design: Case-control study; Level of evidence, 3. Read More

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http://dx.doi.org/10.1177/0363546520929353DOI Listing

Zoledronic Acid Substantially Improves Bone Microarchitecture and Biomechanical Properties After Rotator Cuff Repair in a Rodent Chronic Defect Model.

Am J Sports Med 2020 Jun 16:363546520926471. Epub 2020 Jun 16.

AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, Vienna, Austria.

Background: Bone mineral density at the humeral head is reduced in patients with chronic rotator cuff tears. Bone loss in the humeral head is associated with repair failure after rotator cuff reconstruction. Bisphosphonates (eg, zoledronic acid) increase bone mineral density. Read More

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http://dx.doi.org/10.1177/0363546520926471DOI Listing
June 2020
4.362 Impact Factor

Exosomes Isolated From Platelet-Rich Plasma and Mesenchymal Stem Cells Promote Recovery of Function After Muscle Injury.

Am J Sports Med 2020 Jun 16:363546520926462. Epub 2020 Jun 16.

Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA.

Background: Clinical use of platelet-rich plasma (PRP) and mesenchymal stem cells (MSCs) has gained momentum as treatment for muscle injuries. Exosomes, or small cell-derived vesicles, could be helpful if they could deliver the same or better physiological effect without cell transplantation into the muscle.

Hypothesis: Local delivery of exosomes derived from PRP (PRP-exos) or MSCs (MSC-exos) to injured muscles hastens recovery of contractile function. Read More

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http://dx.doi.org/10.1177/0363546520926462DOI Listing

Are the Classic and the Congruent Arc Latarjet Procedures Equally Effective for the Treatment of Recurrent Shoulder Instability in Athletes?

Am J Sports Med 2020 Jun 16:363546520928343. Epub 2020 Jun 16.

Department of Orthopedics and Traumatology, Prof. Dr. Carlos E. Ottolenghi, Hospital Italiano de Buenos Aires, Argentina.

Background: There is a lack of evidence in the literature comparing outcomes between the classic and the congruent arc Latarjet procedures in athletes.

Purpose: To compare return to sports, functional outcomes, and complications between the classic and the congruent arc Latarjet procedures in athletes with recurrent glenohumeral instability.

Study Design: Cohort study; Level of evidence, 3. Read More

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http://dx.doi.org/10.1177/0363546520928343DOI Listing

Lateral Center-Edge Angle Is Not Predictive of Acetabular Articular Cartilage Surface Area: Anatomic Variation of the Lunate Fossa.

Am J Sports Med 2020 Jul 10;48(8):1967-1973. Epub 2020 Jun 10.

Department of Orthopedic Surgery, University of Michigan, Ann Arbor, Michigan, USA.

Background: Surgical treatment of symptomatic femoroacetabular impingement (FAI) and dysplasia requires careful characterization of acetabular morphology. The lateral center-edge angle (LCEA) is often used to assess lateral acetabular anatomy. Previous work has questioned the LCEA as a surrogate for acetabular contact/articular cartilage surface area because of the variable morphology of the lunate fossa. Read More

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http://dx.doi.org/10.1177/0363546520924038DOI Listing

Better Clinicoradiological Results of BST-CarGel Treatment in Cartilage Repair Compared With Microfracture in Acetabular Chondral Defects at 2 Years.

Am J Sports Med 2020 Jul 10;48(8):1961-1966. Epub 2020 Jun 10.

Department of Surgery, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.

Background: BST-CarGel (CarGel) is an injectable chitosan scaffold that is mixed with fresh, autologous blood and injected into the site of microfracture (MF) to physically stabilize clots and enhance cartilage repair.

Purpose: To evaluate short-term clinicoradiological outcomes of patients treated arthroscopically for acetabular chondral defects with CarGel in conjunction with MF compared with those treated with MF alone.

Study Design: Cohort study; Level of evidence, 3. Read More

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http://dx.doi.org/10.1177/0363546520924841DOI Listing
July 2020
4.362 Impact Factor

In Memoriam: Hua Feng, MD.

Authors:

Am J Sports Med 2020 Jul 10;48(8):2061. Epub 2020 Jun 10.

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http://dx.doi.org/10.1177/0363546520935088DOI Listing

Graft-Preserving Arthroscopic Debridement With Hardware Removal Is Effective for Septic Arthritis After Anterior Cruciate Ligament Reconstruction: A Clinical, Arthrometric, and Magnetic Resonance Imaging Evaluation.

Am J Sports Med 2020 Jul 10;48(8):1907-1915. Epub 2020 Jun 10.

II Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.

Background: Arthroscopic debridement with graft preservation has been advocated as the treatment of choice for septic arthritis after anterior cruciate ligament (ACL) reconstruction, but no previous studies have investigated if hardware removal, while retaining the graft in situ, improves the success rate. Moreover, it is unclear whether the premature removal of fixation devices may affect graft integration and knee stability.

Purpose/hypothesis: The purpose was to assess the clinical and functional outcomes of patients with septic arthritis after ACL reconstruction who underwent arthroscopic debridement, while retaining the graft in situ but removing fixation devices, and to determine if premature hardware removal affects graft integrity and function. Read More

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http://dx.doi.org/10.1177/0363546520924823DOI Listing

Intra-articular Injection of Pure Platelet-Rich Plasma Is the Most Effective Treatment for Joint Pain by Modulating Synovial Inflammation and Calcitonin Gene-Related Peptide Expression in a Rat Arthritis Model.

Am J Sports Med 2020 Jul 10;48(8):2004-2012. Epub 2020 Jun 10.

Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.

Background: Platelet-rich plasma (PRP) has emerged as a treatment for osteoarthritis (OA). However, the effect that leukocyte concentrations in PRP have on OA remains unclear.

Purpose: To clarify the optimal PRP formulation for OA treatment by comparing pure PRP, leukocyte-poor PRP (LP-PRP), and leukocyte-rich PRP (LR-PRP) in a rat arthritis model. Read More

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http://dx.doi.org/10.1177/0363546520924011DOI Listing

Long-Term Follow-up of Skeletally Immature Patients With Physeal-Sparing Combined Extra-/Intra-articular Iliotibial Band Anterior Cruciate Ligament Reconstruction: A 3-Dimensional Motion Analysis.

Am J Sports Med 2020 Jul 10;48(8):1900-1906. Epub 2020 Jun 10.

Division of Sports Medicine, Department of Orthopedics, Boston Children's Hospital, Boston, Massachusetts, USA.

Background: The physeal-sparing iliotibial band (ITB) anterior cruciate ligament (ACL) reconstruction (ACLR) is a well-established technique for treating skeletally immature patients with ACL rupture. However, the long-term implications of the procedure on the intricacies of kinetic and kinematic function of the knee have not been comprehensively investigated.

Purpose: To assess the short-, mid-, and long-term effects of ITB ACLR on kinetic and kinematic parameters of knee functions. Read More

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http://dx.doi.org/10.1177/0363546520927399DOI Listing

Influence of Glenoid Labral Bumper Height and Capsular Volume on Clinical Outcomes After Arthroscopic Bankart Repair as Assessed With Serial CT Arthrogram: Can Anterior-Inferior Volume Fraction Be a Prognostic Factor?

Am J Sports Med 2020 Jul 9;48(8):1846-1856. Epub 2020 Jun 9.

Department of Orthopedic Surgery, Busan Central Hospital, Busan, Republic of Korea.

Background: Arthroscopic labral repair combined with capsular plication decreases joint volume and restores glenoid labral bumper height; thus, the procedure helps decrease capsular redundancy. However, the decreased volume and restored glenoid labral bumper height could change over time, which could influence the outcome of the operation.

Purpose: To (1) measure glenoid labral bumper height and capsular volume quantitatively in serial computed tomography arthrography (CTA) and evaluate the relationship between bumper height and joint volume and (2) compare the difference in bumper height and joint volume between groups with and without apprehension after arthroscopic Bankart repair. Read More

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http://dx.doi.org/10.1177/0363546520924809DOI Listing

Comparing the Responsiveness of the Global Rating Scale With Legacy Knee Outcome Scores: A Delaware-Oslo Cohort Study.

Am J Sports Med 2020 Jul 9;48(8):1953-1960. Epub 2020 Jun 9.

Biomechanics and Movement Science Program, University of Delaware, Newark, Delaware, USA.

Background: The selection of patient-reported outcome measures (PROMs) is essential for obtaining meaningful information to treat a patient, determine a plan of care, and make clinical decisions; however, the process of selecting PROMs for clinical care is difficult, with the need to balance these multiple factors. Variation makes it difficult to compare data across providers and studies.

Hypothesis/purpose: The purpose was to determine the responsiveness of 4 PROMs via effect size and the presence of a ceiling effect in the 5 years after anterior cruciate ligament reconstruction (ACLR). Read More

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http://dx.doi.org/10.1177/0363546520924817DOI Listing

Reconsidering Reciprocal Length Patterns of the Anteromedial and Posterolateral Bundles of the Anterior Cruciate Ligament During In Vivo Gait.

Am J Sports Med 2020 Jul 9;48(8):1893-1899. Epub 2020 Jun 9.

Department of Orthopaedic Surgery, Duke University, Durham, North Carolina, USA.

Background: Some cadaveric studies have indicated that the anterior cruciate ligament (ACL) consists of anteromedial and posterolateral bundles that display reciprocal function with regard to knee flexion. However, several in vivo imaging studies have suggested that these bundles elongate in parallel with regard to flexion. Furthermore, the most appropriate description of the functional anatomy of the ACL is still debated, with the ACL being described as consisting of 2 or 3 bundles or as a continuum of fibers. Read More

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http://dx.doi.org/10.1177/0363546520924168DOI Listing

Large Drill Holes Are Still Present in the Long Term After Arthroscopic Bankart Repair With Absorbable Tacks: An 18-Year Randomized Prospective Study.

Am J Sports Med 2020 Jul 8;48(8):1865-1872. Epub 2020 Jun 8.

NU Hospital Group, Department of Orthopaedics, Trollhättan, Sweden.

Background: Studies have demonstrated the development of an osseous reaction at the drill sites of anchors after arthroscopic shoulder surgery.

Purpose: To investigate the drill-hole size at 18 years after arthroscopic Bankart repair using either fast polygluconate acid (PGA) or slow polylevolactic acid (PLLA) absorbable tacks and to compare the functional outcomes and development of osteoarthritis.

Study Design: Randomized controlled trial; Level of evidence, 2. Read More

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http://dx.doi.org/10.1177/0363546520922191DOI Listing

Diagnostic Accuracy of Physical Examination Tests in Core Muscle Injury.

Am J Sports Med 2020 Jul 8;48(8):1983-1988. Epub 2020 Jun 8.

St Joseph's University Medical Center, Paterson, New Jersey, USA.

Background: Core muscle injury (CMI), often referred to as a sports hernia, is a common cause of groin pain in athletes characterized by concomitant injury to the insertion of the adductor longus and the rectus abdominis muscles. Currently, the literature on CMI is sparse with no standardized physical examination tests used in the diagnosis of this type of injury.

Purpose: To determine the diagnostic accuracy of various physical examination tests in the diagnosis of CMI. Read More

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http://dx.doi.org/10.1177/0363546520926029DOI Listing

Arthroscopic Treatment of Osteochondral Lesions of the Talus in a Pediatric Population: A Minimum 2-Year Follow-up.

Am J Sports Med 2020 Jul 8;48(8):1989-1998. Epub 2020 Jun 8.

Southern California Orthopedic Institute, Van Nuys, California, USA.

Background: Treatment of osteochondral lesions of the talus (OLTs) in children presents a difficult clinical challenge, with few large series reported.

Purpose: To evaluate functional and radiographic outcomes for children and adolescents undergoing arthroscopic treatment of symptomatic OLT with a minimum follow-up of 2 years.

Study Design: Case series; Level of evidence, 4. Read More

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http://dx.doi.org/10.1177/0363546520924800DOI Listing

Mental Health in Orthopaedic Sports Medicine: Consider Your Exposure.

Authors:
David C Landy

Am J Sports Med 2020 Jun;48(7):1557-1558

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http://dx.doi.org/10.1177/0363546520920272DOI Listing

Incidence of Lower Extremity Injury in the National Football League: 2015 to 2018.

Am J Sports Med 2020 Jun 2:363546520922547. Epub 2020 Jun 2.

Bellin Health Titletown Sports Medicine and Orthopedics, Green Bay, Wisconsin, USA.

Background: Lower extremity injuries are the most common injuries in professional sports and carry a high burden to players and teams in the National Football League (NFL). Injury prevention strategies can be refined by a foundational understanding of the occurrence and effect of these injuries on NFL players.

Purpose: To determine the incidence of specific lower extremity injuries sustained by NFL players across 4 NFL seasons. Read More

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http://dx.doi.org/10.1177/0363546520922547DOI Listing

Effect of Platelet-Rich Plasma on Nonsurgically Treated Acute Achilles Tendon Ruptures: A Randomized, Double-Blinded Prospective Study.

Am J Sports Med 2020 Jun 2:363546520922541. Epub 2020 Jun 2.

CopenRehab, Section of Social Medicine, Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.

Background: An acute Achilles tendon rupture (ATR) is a long-lasting and devastating injury. Possible biological augmentation to promote and strengthen tendon healing after an ATR would be desirable.

Purpose: To determine whether the application of a platelet-rich plasma (PRP) injection in nonsurgically treated ATRs may promote healing and thereby improve functional outcomes. Read More

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http://dx.doi.org/10.1177/0363546520922541DOI Listing

Clinical Value of Ultrasonographic Assessment in Lateral Epicondylitis Versus Asymptomatic Healthy Controls.

Am J Sports Med 2020 Jul 2;48(8):1873-1883. Epub 2020 Jun 2.

Diagnostic Centre, Silkeborg Regional Hospital, Silkeborg, Denmark.

Background: Ultrasonography (US) is often used in the assessment of lateral epicondylitis (LE). The strength of evidence supporting its role is, however, not well-documented.

Purpose: To describe and compare the US tendinopathic changes observed in patients with LE and the general population, including any correlation between patient characteristics and US outcomes. Read More

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http://dx.doi.org/10.1177/0363546520921949DOI Listing

Return to Sport Following High Tibial Osteotomy With Concomitant Osteochondral Allograft Transplantation.

Am J Sports Med 2020 Jul 27;48(8):1945-1952. Epub 2020 May 27.

Seattle Orthopaedic Center, Seattle, Washington, USA.

Background: Young patients with symptomatic chondral defects in the medial compartment with varus malalignment may undergo opening wedge high tibial osteotomy (HTO) with concomitant osteochondral allograft transplantation (OCA) (HTO + OCA). Although patients have demonstrated favorable outcomes after HTO + OCA, limited information is available regarding return to sporting activities after this procedure.

Purpose: To evaluate (1) the timeline to return to sports (RTS), (2) patient satisfaction, and (3) reasons for discontinuing sporting activity after HTO + OCA, and to identify predictive factors of RTS. Read More

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http://dx.doi.org/10.1177/0363546520920626DOI Listing

Biomechanical Functional Elbow Restoration of Acute Ulnar Collateral Ligament Tears: The Role of Internal Bracing on Gap Formation and Repair Stabilization.

Am J Sports Med 2020 Jul 26;48(8):1884-1892. Epub 2020 May 26.

Sporthopaedicum, Regensburg, Germany.

Background: Biomechanical studies have compared augmented primary repair with internal bracing versus reconstruction techniques of the anterior ulnar collateral ligament (aUCL) in the elbow. However, aUCL repair alone has not been compared with augmented repair or reconstruction techniques.

Hypothesis: Internal bracing of aUCL repair provides improved time-zero stabilization in terms of gap formation, torsional stiffness, and residual torque compared with both repair alone and the modified docking technique, with enhanced valgus stability restoration to that of the native ligament. Read More

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http://dx.doi.org/10.1177/0363546520921174DOI Listing

A Synthetic Graft With Multilayered Co-Electrospinning Nanoscaffolds for Bridging Massive Rotator Cuff Tear in a Rat Model.

Am J Sports Med 2020 Jul 26;48(8):1826-1836. Epub 2020 May 26.

Department of Sports Medicine, Huashan Hospital, Shanghai, China.

Background: Graft bridging is used in massive rotator cuff tear (MRCT); however, the integration of graft-tendon and graft-bone is still a challenge.

Hypothesis: A co-electrospinning nanoscaffold of polycaprolactone (PCL) with an "enthesis-mimicking" (EM) structure could bridge MRCT, facilitate tendon regeneration, and improve graft-bone healing.

Study Design: Controlled laboratory study. Read More

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http://dx.doi.org/10.1177/0363546520917684DOI Listing

The Use of Recombinant Human Growth Hormone to Protect Against Muscle Weakness in Patients Undergoing Anterior Cruciate Ligament Reconstruction: A Pilot, Randomized Placebo-Controlled Trial.

Am J Sports Med 2020 Jul 26;48(8):1916-1928. Epub 2020 May 26.

Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA.

Background: Anterior cruciate ligament (ACL) tears are common knee injuries. Despite undergoing extensive rehabilitation after ACL reconstruction (ACLR), many patients have persistent quadriceps muscle weakness that limits their successful return to play and are also at an increased risk of developing knee osteoarthritis (OA). Human growth hormone (HGH) has been shown to prevent muscle atrophy and weakness in various models of disuse and disease but has not been evaluated in patients undergoing ACLR. Read More

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http://dx.doi.org/10.1177/0363546520920591DOI Listing
July 2020
4.362 Impact Factor

Quantitative and Qualitative Analyses of the Glenohumeral Ligaments: An Anatomic Study.

Am J Sports Med 2020 Jul 22;48(8):1837-1845. Epub 2020 May 22.

Steadman Philippon Research Institute, Vail, Colorado, USA.

Background: While several studies have qualitatively described the anatomy of the glenohumeral ligaments, there remains a lack of consensus regarding their quantitative humeral and glenoid attachment sites.

Purpose: To quantitatively and qualitatively describe the anatomic humeral and glenoid attachment sites of the glenohumeral ligaments and their relationship to well-established anatomic landmarks.

Study Design: Descriptive laboratory study. Read More

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http://dx.doi.org/10.1177/0363546520917665DOI Listing

Root Repair Versus Partial Meniscectomy for Medial Meniscus Posterior Root Tears: Comparison of Long-term Survivorship and Clinical Outcomes at Minimum 10-Year Follow-up.

Am J Sports Med 2020 Jul 21;48(8):1937-1944. Epub 2020 May 21.

Department of Orthopedic Surgery and Sports Center, Myong-Ji Hospital, Seoul, Republic of Korea.

Background: The importance of repair in medial meniscus posterior root tears (MMPRTs) has been increasingly recognized because it restores hoop tension. However, no study has compared the long-term outcomes between meniscectomy and repair.

Hypothesis: Survivorship and clinical outcomes of repair would be better than those of meniscectomy after long-term follow-up. Read More

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http://dx.doi.org/10.1177/0363546520920561DOI Listing

The Biomechanical Effect of Bone Grafting and Bone Graft Remodeling in Patients With Anterior Shoulder Instability.

Am J Sports Med 2020 Jul 21;48(8):1857-1864. Epub 2020 May 21.

Department of Shoulder and Elbow Surgery, Center for Musculoskeletal Surgery, Charité-Universitaetsmedizin Berlin, Berlin, Germany.

Background: Individual constitutional differences in glenoid shape and bone remodeling require a patient-specific and longitudinal approach to evaluate the biomechanical effects of glenoid bone grafting in patients with anterior shoulder instability.

Purpose: To quantify the longitudinal, in vivo, biomechanical effects of bone grafting, bone graft remodeling, and glenoid shape in patients with anterior shoulder instability by means of patient-specific finite element models.

Study Design: Descriptive laboratory study. Read More

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http://dx.doi.org/10.1177/0363546520919958DOI Listing