Anterior glenoid perforation with suture anchor causing subscapularis irritation and pain.

Background: Suture anchors for labral repair have been associated with complications including suprascapular notch encroachment and osteolysis.

Case Description: We present a case of suture anchor penetration of the anterior glenoid neck leading to pain secondary to subscapularis muscle irritation in a 14-year-old boy. The patient had labral repair and subsequent anterior shoulder pain which resolved after anchor removal.

Traumatic Lateral Plantar Artery Pseudoaneurysm and the Use of Time-Resolved MR Angiography.

Unlabelled: Vascular injury resulting in pseudoaneurysm formation in the plantar aspect of the foot is an uncommon injury after trauma. Such injuries are more often reported in the lateral plantar artery rather than the medial plantar artery, most likely because of its more superficial location. Traditional modalities in diagnosis have included ultrasound and digital subtraction angiography.

Evaluation of a porous polyurethane scaffold in a partial meniscal defect ovine model.

Purpose: The objective of this study was to assess the performance of a degradable porous polyurethane scaffold in a partial meniscectomy ovine model.

Methods: We subjected 42 skeletally mature ewes to unilateral partial excision of the lateral meniscus. In 19 animals the defect was left unfilled; in 23 animals a scaffold was inserted.

Concentrated bone marrow aspirate improves full-thickness cartilage repair compared with microfracture in the equine model.

Background: The purpose of this study was to compare the outcomes of treatment with bone marrow aspirate concentrate, a simple, one-step, autogenous, and arthroscopically applicable method, with the outcomes of microfracture with regard to the repair of full-thickness cartilage defects in an equine model.

Methods: Extensive (15-mm-diameter) full-thickness cartilage defects were created on the lateral trochlear ridge of the femur in twelve horses. Bone marrow was aspirated from the sternum and centrifuged to generate the bone marrow concentrate.

Early reactive synovitis and osteolysis after total hip arthroplasty.

Background: Little is known about intraarticular pathology following THA prior to the radiographic appearance of osteolysis, primarily due to imaging limitations. MRI has recently been applied to imaging the postarthroplasty hip with the ability to detect periarticular bony and soft tissue pathology; specifically, it is able to detect abnormal synovial patterns and focal bone loss well before the radiographic appearance of osteolysis.

Questions/purposes: We therefore used MRI to determine the incidence of early reactive synovitis and osteolysis in asymptomatic patients after THA, and whether there is an association between these MRI findings and clinical outcomes or radiographic wear measurements at this early stage.

Using magnetic resonance angiography to measure abnormal synovial blood vessels in early inflammatory arthritis: a new imaging biomarker?

Objective: To ascertain whether magnetic resonance angiography (MRA) can reliably detect synovial neovascularization in subjects with early inflammatory arthritis.

Methods: Subjects with 6 weeks to 6 months of clinical evidence of inflammatory hand arthritis had a radiograph, power Doppler ultrasound (PDU) scan, magnetic resonance imaging (MRI), and contrast enhanced MRA performed on the more symptomatic hand. Ultrasound examination of the wrist and 2nd-5th metacarpophalangeal (MCP) joints was scored for erosions, synovial thickening, and synovial blood flow.

A Review of Arthroscopic Bone Marrow Stimulation Techniques of the Talus: The Good, the Bad, and the Causes for Concern.

Osteochondral lesions of the talus are common injuries following acute and chronic ankle sprains. Numerous surgical treatment strategies have been employed for treating these lesions; arthroscopic bone marrow stimulation is recognized as the first-line technique to provide fibrocartilage infill of the defect site. While the short- and medium-term outcomes of this technique are good, the long-term outcomes are not yet known.

The Maturation of Synthetic Scaffolds for Osteochondral Donor Sites of the Knee: An MRI and T2-Mapping Analysis.

Objective: The purpose of this study was to analyze the morphological imaging characteristics and incorporation of TruFit bone graft substitute (BGS) plugs using cartilage-sensitive magnetic resonance imaging (MRI) and quantitative T2 mapping.

Design: Twenty-six patients (mean age, 28.72 years; range, 11-56 years) underwent osteochondral autologous transplantation (OATS) for chondral defects with filling of the knee joint donor sites using Trufit BGS plugs.

An autologous cartilage tissue implant NeoCart for treatment of grade III chondral injury to the distal femur: prospective clinical safety trial at 2 years.

Background: The healing potential of damaged articular cartilage is limited. The NeoCart is a tissue-engineered collagen matrix seeded with autogenous chondrocytes designed for the repair of hyaline articular cartilage.

Hypothesis: The NeoCart implant is well tolerated in the human knee.

Magnetic resonance imaging in the diagnosis and management of hip pain after total hip arthroplasty.

Evaluation of pain following total hip arthroplasty (THA) can be challenging in the absence of radiographic pathology. This study aimed to examine the diagnostic utility of magnetic resonance imaging (MRI) in the evaluation of enigmatic hip pain following THA. We reviewed a series of patients who were evaluated with MRI after presenting with enigmatic hip pain following THA.

Magnetic resonance imaging and clinical evaluation of patellar resurfacing with press-fit osteochondral autograft plugs.

Background: Autologous osteochondral transplantation (AOT) has been successfully used in the femoral condyle and trochlea and is an attractive treatment option for full-thickness patellar cartilage lesions.

Hypothesis: Patients treated with AOT for the repair of symptomatic, isolated patellar cartilage lesions will demonstrate improvement in functional outcomes and postoperative magnetic resonance imaging appearance.

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

Imaging of the rotator cuff following repair: human and animal models.

Imaging of the rotator cuff following repair may be challenging due to the type of fixation, surgical manipulation of the tissue and the presence of residual defects that may exist in the presence of good functional outcome. Both ultrasound and magnetic resonance (MR) imaging present unique advantages in evaluation of the postoperative tissue. MR imaging has superior soft tissue contrast and provides a more global shoulder assessment, including the degree of arthrosis, while ultrasound enables a more dynamic testing of the repaired tissue.

Magnetic resonance imaging of joint arthroplasty.

Modification of MRI pulse sequence parameters has permitted imaging of arthroplasty and the surrounding soft tissue envelope, enabling detection of regional tendon attachments, including the hip abductors, the knee extensor mechanism, and the rotator cuff of the shoulder. The multiplanar capabilities and superior soft tissue contrast have established MRI as the most sensitive, noninvasive means to detect periacetabular osteolysis after hip arthroplasty. Detection of intrasynovial deposits that may precede bone loss and regions of neurovascular compression also is possible.