Publications by authors named "Martin M Malawer"

: Soft-tissue sarcomas (STS) in adults comprise a heterogeneous group of tumors of mesenchymal origin that share similar biological patterns of local tumor growth and metastatic dissemination.

: The judicious use of imaging studies, biopsy techniques, and pathological evaluations is essential for accurate diagnosis and for planning treatment strategy.

: Wide local resection and radiation therapy form the cornerstone of management of high-grade STS.

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Article Synopsis
  • PVNS is a rare, non-cancerous condition that affects the lining of joints and can occur in areas like bursae and tendon sheaths, with extra-articular cases being particularly uncommon.
  • A specific case of extra-articular PVNB in the pes anserinus bursa is documented, characterized by a painful mass in the leg, which was confirmed through MRI and biopsy.
  • The patient underwent successful surgery with a smooth recovery and remains disease-free after two years, highlighting the importance of accurate diagnosis through clinical, radiographic, and histological methods.
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Background: Both primary and metastatic tumors in the foot and ankle have been reported as rare. The purpose of this study was to describe 153 cases of foot and ankle tumors from a 20-year experience in a tertiary referral center specializing in orthopaedic oncology. It is the largest reported series of both bone and soft tissue tumors in the foot and ankle.

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Background: Extra-compartmental soft tissue sarcomas may grow in virtual spaces in close proximity to major neurovascular structures and thus, require a complex resection. We analyzed the general principles by which these resections are planned.

Methods: We retrospectively analyzed 53 patients with sarcomas located in the femoral triangle (15), sartorial canal (16), and the popliteal fossa (22).

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Endoprosthetic reconstruction of the proximal tibia continues to pose many challenges. A retrospective analysis of 44 consecutive patients who underwent cemented proximal tibial replacement were included to investigate if patient age, surgical stage, type of implant, stem diameter, or resection length could be associated with implant failure. Fifteen patients (34%) suffered prosthetic failure, 7 due to infection.

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Distal femoral resection and endoprosthetic reconstruction are sometimes associated with flap necrosis and inadequate soft tissue coverage. We evaluated the anterior popliteal surgical approach, which was designed to reduce those complications by using a posteromedial myocutaneous flap based upon the vastus medialis. A retrospective analysis of 46 consecutive patients was performed, and results were compared with historical controls.

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Background: 'Telangiectatic' change, which contains a large fluid hemorrhagic component, occurs in a variety of high-grade soft tissue sarcomas.

Methods: In a retrospective database review, we identified 20 consecutive patients (3%) with 'telangiectatic' change in soft tissue sarcomas.

Results: Tumors were located in the thigh (55%), shoulder (15%), calf (15%), upper arm (10%), and buttock in one patient.

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Background: The authors describe the surgical technique and functional results of extensor mechanism reconstruction after major resections of soft-tissue tumors from the anterior compartment of the thigh.

Methods: Between 1983 and 2003, 78 patients with soft-tissue sarcomas of the anterior compartment of the thigh were operated on at the authors' institution. Sixteen patients with extensive resections of the quadriceps muscle and one patient with a complete resection of the femoral nerve underwent functional extensor mechanism reconstruction.

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Tumors of the axilla are rare and pose a surgical challenge because they are usually large at presentation and in close proximity to the major neurovascular bundle of the upper extremity. The use of detailed preoperative evaluation studies and extensile surgical exposure for these tumors enabled us to determine tumor resectability and proceed with a safe resection or perform an amputation when required. We retrospectively reviewed 27 patients who underwent resection of an axillary tumor from 1989 to 2004 and analyzed their presenting symptoms, results of preoperative studies, type of surgery, and functional outcome.

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Curettage and cryosurgery have been used successfully for treatment of benign locally aggressive and some low-grade malignant bone tumors. After treating these lesions, we reconstruct residual bone defects around the knee with cement, intramedullary pins, and autogenous bone graft for subchondral augmentation and closure of cortical windows. We questioned the incidence of fractures and the rates of nonunion and malunion and asked whether patients at risk for fractures can be identified.

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Diffuse pigmented villonodular synovitis (PVNS) of the knee is a rare, locally aggressive disease. Since 1995 the senior author has been treating patients with diffuse intra- and extra-articular PVNS of the knee with a bimodality treatment protocol, consisting of anterior and posterior open synovectomies in conjunction with external-beam radiation. The purpose of this study was to describe the surgical technique, evaluate our protocol's efficacy in limiting local recurrences, and assess its functional implications and associated morbidities.

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Article Synopsis
  • Humeral suspension was the common method for reconstruction after total scapulectomy until the early 1990s, when the senior author began using scapular endoprosthetic reconstruction, especially when key shoulder muscles were preserved.
  • A study comparing outcomes between 16 patients with humeral suspensions and 16 with scapular endoprostheses showed that the latter had significantly better functional abilities and cosmetic results.
  • The average Musculoskeletal Tumor Society scores were 78.5% for scapular endoprostheses versus 58.5% for humeral suspensions, with few patients needing cosmetic aids in the endoprosthesis group, leading to the recommendation of this procedure when certain muscles are intact.
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Soft tissue sarcomas of the popliteal fossa are rare diseases. Resection is challenging because of their extracompartmental location and proximity to neurovascular structures. Their prognosis is inferior to intracompartmental extremity soft tissue sarcomas.

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Article Synopsis
  • Managing tumors at the proximal fibula often requires removing the fibular head, which can lead to knee instability; a reconstructive technique has been developed to address this issue.
  • A study involving 24 patients who underwent this procedure from 1987 to 2004 evaluated knee stability and functional outcomes, with varying degrees of resection depending on tumor type (Type I or Type II).
  • Results showed that most patients achieved knee stability after reconstruction, with better outcomes for those who had less radical resections (Type I), and stapling the lateral collateral ligament proved to be an effective method for reconstruction.
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Unlabelled: Resection of musculoskeletal tumors may result in large soft tissue defects that cannot be closed primarily and require prolonged dressing changes and complex surgical interventions for wound coverage. We retrospectively reviewed 23 patients with such defects treated with a vacuum-assisted wound closure system and compared the outcome of these patients with a control group. The study group included 15 women and eight men who had their wounds located at the back (two), pelvic girdle (11), thigh (eight), and leg (two).

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Unlabelled: Metastatic bone disease of the humerus may require surgery for treatment of an impending or existing pathologic fracture or for alleviating disabling pain. Prompt restoration of function is a main goal of surgery, although published results do not reveal if that goal is being met. We retrospectively reviewed range of motion and function of 59 patients operated on from 1986-2003 for those indications.

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Purpose: To describe the imaging characteristics of a large series of telangiectatic osteosarcomas with pathologic findings for comparison.

Materials And Methods: The authors retrospectively reviewed 40 pathologically confirmed telangiectatic osteosarcomas. Patient demographics and images from radiography (n = 36), bone scintigraphy (n = 17), angiography (n = 4), computed tomography (CT) (n = 25), and magnetic resonance (MR) imaging (n = 27) were evaluated by three authors in consensus for lesion location, size, and intrinsic characteristics.

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Removal by means of curettage is the mainstay of surgical treatment of enchondromas of the hand. Reconstruction traditionally entails filling the tumor cavity with a bone graft, or it may be decided not to perform a reconstruction. In either case a period of protected activity is needed until the tumor cavity has healed.

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The distal femur is a common site for primary and metastatic bone tumors and therefore, it is a frequent site in which limb-sparing surgery is done. Between 1980 and 1998, the authors treated 110 consecutive patients who had distal femur resection and endoprosthetic reconstruction. There were 61 males and 49 females who ranged in age from 10 to 80 years.

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Malignant tumors involving the shoulder girdle can arise from four distinct locations: the proximal humerus, scapula, periscapular muscles, and axillary structures. This article describes a utilitarian shoulder approach that can be used to resect these tumors.

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Purpose: To determine the diagnostic accuracy of image-guided percutaneous biopsy in 110 primary bone tumors of varying internal compositions.

Materials And Methods: One hundred ten consecutive patients with primary bone tumors underwent biopsy with computed tomography (CT) or fluoroscopy. Ninety-one patients underwent surgical follow-up and 19 received medical treatment and underwent subsequent imaging studies.

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