Sacroiliac joint fusion navigation: how accurate is pin placement?

Objective: Sacroiliac joint (SIJ) fusion utilizing intraoperative navigation requires a standard reference frame, which is often placed using a percutaneous pin. Proper placement ensures the correct positioning of SIJ fusion implants. There is currently no grading scheme for evaluation of pin placement into the pelvis.

Phosphaturic Mesenchymal Tumor: An Unusual Cause of Stress Fractures Presenting to Sports Medicine.

Phosphaturic mesenchymal tumors (PMT) are a rare neoplasm oftentimes associated with tumor-induced osteomalacia (TIO). The non-specific presentation and symptoms of these pathologies make them difficult to diagnose. We report a case of a 52-year-old patient with an intermetatarsal phosphaturic mesenchymal tumor who presented to the orthopedic sports medicine clinic with metabolic deficiencies and bilateral subtrochanteric cortical stress fractures indicative of osteomalacia.

Safety of a Noninvasive Expandable Electromagnetic Prosthesis with an In Situ Ventricular Assist Device: A Case Report.

Case: An 8-year-old girl was diagnosed with osteosarcoma of the distal femur. She underwent chemotherapy and wide resection with implantation of a noninvasive electromagnetic expandable distal femur prosthesis. Ninety-three days after chemotherapy, she developed anthracycline-induced cardiomyopathy with heart failure for which a ventricular assist device was placed.

Reconstruction of the Shoulder and Humerus in Metastatic Bone Disease.

Metastatic disease involving the skeleton most often affects the spine, pelvis, and proximal long bones of the extremities. In the upper extremity, the proximal humerus is frequently affected. Although many of the principles of managing metastatic bone disease are similar, regardless of the metastatic site, the upper extremity has some unique anatomic and functional traits that warrant consideration when making management decisions.

Fibrous hamartoma of infancy associated with bony remodeling and muscle atrophy.

Fibrous hamartoma of infancy (FHI) is a benign, poorly demarcated, unencapsulated hamartoma contiguous with surrounding fat. This case highlights pronounced bony remodeling and muscle atrophy associated with FHI in a 6-week-old girl. Emphasis is placed on pathologic diagnosis and mechanisms, treatment considerations, and the multidisciplinary approach utilized in the management of the disorder.

Management of Unplanned Excision for Soft-Tissue Sarcoma With Preoperative Radiotherapy Followed by Definitive Resection.

Background And Objectives: The purpose of this study was to review the outcomes after preoperative radiotherapy and definitive surgery for patients who initially had inadvertent excision for sarcoma.

Materials And Methods: Treatment records of 44 consecutive patients, who initially underwent unplanned excision of soft-tissue sarcoma between January 2004 and January 2012, were reviewed. All patients had clinically localized disease before treatment and received preoperative external-beam radiotherapy followed by definitive oncologic surgery at our institution.

Vascular endothelial growth factor improves bone repair in a murine nonunion model.

Objectives: Vascular endothelial growth factor (VEGF) is a potent angiogenic factor that plays an important role during skeletal development and fracture healing. Previous experimental studies have shown that VEGF applied immediately after injury can stimulate bone repair in animal fracture nonunion models. However, the effectiveness of VEGF on an established fracture non-union has not been determined.

Surgical complications associated with extensive tumoral calcinosis.

In this article, we describe the presenting features, radiographic appearance, and proposed pathogenesis of tumoral calcinosis; highlight the surgical complications we have encountered with the syndrome; and review the complications reported in the literature.

When should we biopsy a solitary central cartilaginous tumor of long bones? Literature review and management proposal.

Differentiation between benign and low-grade malignant cartilaginous tumors is a radiological and pathological challenge. Based on a literature review, we propose the following guidelines for the management of a solitary central cartilaginous tumor of long bones distinguishing three situations: 1. The tumor is considered to be aggressive and requires surgery if one of the following criteria is present: cortical destruction, Moth-eaten or permeative osteolysis, spontaneous pathologic fracture, periosteal reaction, edema surrounding the tumor on MR images, and soft tissue mass.

Early outcomes for malignant peripheral nerve sheath tumor treated with chemotherapy.

Objectives: Malignant peripheral nerve sheath tumors (MPNST) are rare soft-tissue sarcomas with a tendency for recurrence and metastasis. Treatment using chemotherapy is controversial, but benefit with some agents has been described. This study aimed to analyze early survival outcomes using doxorubicin and ifosfamide chemotherapy for MPNST.

Primary musculoskeletal sarcoidosis.

Sarcoidosis is a well-described clinical entity with several types of presentation among different organ systems. However, primary musculoskeletal manifestation is a rare and seldom-described manifestation. A retrospective review of patients seen at our institution from 1999 to 2009 was performed to identify patients with such presentation.

Curettage and graft alleviates athletic-limiting pain in benign lytic bone lesions.

Background: Solitary bone cysts (SBC), nonossifying fibromas (NOF), and fibrous dysplasia (FD) create benign intramedullary lytic bone lesions. They are typically asymptomatic and treated conservatively. We present a series of lesions that caused performance-limiting pain in young athletes, a symptom phenomenon and possible treatment indication that has been poorly described in the literature.

Case report: hemosiderotic fibrohistiocytic lipomatous lesion: a clinicopathologic characterization.

Background: A hemosiderotic fibrohistiocytic lipomatous lesion, also called hemosiderotic fibrolipomatous tumor, is a rare and recently described fibrolipomatous entity. Initially considered the result of a reactive inflammatory process from trauma or vascular disease, newer evidence suggests it may be neoplastic in origin.

Case Report: We report the case of a 56-year-old woman with a painful mass in the dorsal aspect of the foot diagnosed as a hemosiderotic fibrohistiocytic lipomatous lesion.

Treatment of adult rhabdomyosarcoma.

Objectives: Rhabdomyosarcoma is an exceedingly rare tumor in adults, and standard chemotherapy used for children is much less effective in adults. This study examines short-term outcomes using doxorubicin, ifosfamide, and vincristine for adult rhabdomyosarcoma.

Methods: Pathology records were searched for adults (age, >18) with rhabdomyosarcoma treated at our musculoskeletal tumor center.

Symptomatic fat necrosis and lipoatrophy of the posterior pelvis following trauma.

Posttraumatic fat necrosis and lipoatrophy can occur in the subcutaneous fat following falls, blunt injury, surgery, and minor procedures or injections. While these processes have no inherent serious medical consequences, they occasionally require treatment due to severe or concerning symptoms. Three patients (all women; average age, 47 years) who sustained blunt trauma to the pelvis and were diagnosed with posttraumatic fat necrosis or lipoatrophy were retrospectively identified from our orthopedic oncology records.

Ethanol sclerotherapy reduces pain in symptomatic musculoskeletal hemangiomas.

Unlabelled: Hemangiomas, benign vascular lesions, require intervention if causing pain or functional limitations. Functional deficits are common after excision, favoring minimally invasive treatments. To determine whether ethanol sclerotherapy reduces pain and lesion size and to assess complications in symptomatic musculoskeletal hemangiomas, we retrospectively reviewed 19 patients (six males, 13 females; mean age, 34 years) meeting criteria of confirmed hemangioma, treatment with ethanol sclerotherapy, and minimum of 6 weeks of followup.

Early outcomes of soft tissue sarcomas presenting with metastases and treated with chemotherapy.

Objectives: The purpose of this study is to describe outcomes for patients with metastatic soft tissue sarcoma treated with chemotherapy.

Methods: We retrospectively reviewed the records of 383 soft tissue sarcoma patients treated at our institution from 1997 to 2006. Thirty-five patients met the inclusion criteria-metastatic disease on presentation; primary tumor outside the abdomen; treatment with chemotherapy; and minimum follow-up of 3 months.

Chondromyxoid fibroma involving the metacarpophalangeal joint.

Chondromyxoid fibroma is a rare benign bony tumor classically occurring in the metaphyseal region of the long bones surrounding the knee, but also found with relative frequency in other long bones, the pelvis, ribs, and small foot bones. The small bones of the hand, however, are rarely involved. The tumor is considered a physeal plate remnant and may involve the epiphysis, diaphysis, or both along with its metaphyseal origin.

Internal hemipelvectomy for pelvic sarcomas using a T-incision surgical approach.

Unlabelled: Internal hemipelvectomy is performed for pelvic sarcomas when the tumor can be safely resected without sacrificing the entire extremity. Wide exposure and awareness of major neurovascular structures are crucial to the success of this surgery. Various modifications on the standard utilitarian approach have been used to best achieve these goals.

Concurrent osteochondroma and osteoblastoma of the proximal humeral shaft.

We present what we believe is the first reported case of synchronous osteochondroma and osteoblastoma, occurring in the proximal humerus of a young man. A 15-year-old boy presented with a painful left arm mass for 3 months. A firm mass was palpable in the proximal medial arm, and he had mild triceps weakness secondary to pain.