Primary Lymphoma of the Distal Femur Presenting as Spontaneous Deep Vein Thrombosis and Knee Monoarthritis: A Case Report.

CASE: A 68-year-old man with a history of unprovoked deep vein thrombosis (DVT) presented with recurrent knee effusions after the initiation of anticoagulation. Radiographs showed soft-tissue swelling without a distinct skeletal lesion. Magnetic resonance imaging, however, showed a marrow-replacing process in the distal femur. Subsequent biopsy demonstrated B-cell lymphoma. CONCLUSION: This is a rare case of a primary lymphoma of bone mimicking synovial disease. It also highlights the fact that an unprovoked DVT may be a harbinger of an undiagnosed underlying malignancy.

Subpectoral biceps tenodesis: an anatomic study and evaluation of at-risk structures.

BACKGROUND: The neurovascular structures of the proximal arm may be at risk for iatrogenic injury during open subpectoral biceps tenodesis (OSPBT). PURPOSE: To define the anatomic relationships and at-risk structures during OSPBT and to quantify the effect of arm rotation on the position of the musculocutaneous nerve. STUDY DESIGN: Descriptive laboratory study. METHODS: The OSPBT approach was performed in 17 unembalmed cadaveric upper extremities. The tenodesis site was inferior to the bicipital groove and positioned so the musculotendinous portion of the long head of the biceps rested at the inferior border of the pectoralis major. A meticulous dissection identified the brachial artery, deep brachial artery, cephalic vein, brachial vein, medial brachial cutaneous nerve, medial antebrachial cutaneous nerve, intercostal brachial cutaneous nerve, musculocutaneous nerve, axillary nerve, median nerve, and radial nerve. Superficial structures were measured from the superior and inferior aspects of the incision, and deep structures were measured from the tenodesis site and nearest retractor. The musculocutaneous nerve was measured with the arm in neutral, internal, and external rotation. RESULTS: The musculocutaneous nerve was 10.1 mm (range, 6-18 mm) medial to the tenodesis location and 2.9 mm (range, 1-6 mm) medial to the medially placed retractor in neutral arm position. The radial nerve and deep brachial artery were 7.4 mm (range, 2-12 mm) and 5.7 mm (range, 1-10 mm) deep to the medially placed retractor, respectively. With the arm internally rotated to 45°, the musculocutaneous nerve was 8.1 mm from the tenodesis site, compared with 19.4 mm with the arm 45° externally rotated (P = .009). The median nerve, brachial artery, and brachial vein were >2.5 cm from the tenodesis site and nearest retractor during deep dissection. CONCLUSION: The musculocutaneous nerve, radial nerve, and deep brachial artery are within 1 cm of the standard medial retractor. External rotation of the arm moves the musculocutaneous nerve 11.3 mm further away from the tenodesis site compared with the internally rotated position. CLINICAL RELEVANCE: The musculocutaneous nerve, radial nerve, and deep brachial artery course in close proximity to the operative field and are therefore at risk during OSPBT. Limiting the use of medial retraction and placement of the arm in an externally rotated position will minimize neurovascular injury.

A systematic process to prioritize prevention activities sustaining progress toward the reduction of military injuries.

BACKGROUND: To sustain progress toward injury reduction and other health promotion goals, public health organizations need a systematic approach based on data and an evaluation of existing scientific evidence on prevention. This paper describes a process and criteria developed to systematically and objectively define prevention program and policy priorities. METHODS: Military medical surveillance data were obtained and summarized, and a working group of epidemiology and injury experts was formed. After reviewing the available data, the working group used predefined criteria to score leading military unintentional injury causes on five main criteria that assessed factors contributing to program and policy success: (1) importance of the problem, (2) effectiveness of existing prevention strategies, (3) feasibility of establishing programs and policies, (4) timeliness of implementation and results, and (5) potential for evaluation. Injury problems were ranked by total median score. RESULTS: Causes with the highest total median scores were physical training (34 points), military parachuting (32 points), privately-owned vehicle crashes (31 points), sports (29 points), falls (27 points), and military vehicle crashes (27 points). CONCLUSIONS: Using a data-driven, criteria-based process, three injury causes (physical training, military parachuting, and privately owned-vehicle crashes) with the greatest potential for successful program and policy implementation were identified. Such information is useful for public health practitioners and policymakers who must prioritize among health problems that are competing for limited resources. The process and criteria could be adapted to systematically assess and prioritize health issues affecting other communities.

The prevalence of admission for sarcoma in the military health system during 2002-2003.

The etiology of sarcomas is not clear. Environmental exposures have been implicated as potential agents in the development of some sarcomas, but more research is needed. The military health system (MHS) may be able to provide population-based information regarding sarcomas. Discharge diagnoses for bone sarcoma and soft tissue sarcoma were searched within a large administrative database maintained by the U.S. military. There were > 200 cases of bone sarcoma and > 300 cases of soft tissue sarcoma during the 2-year study period of 2002-2003. The crude prevalence of admission for bone sarcoma within the MHS was 1.2 cases per 100,000 per year. The crude prevalence of admission for soft tissue sarcoma was 1.7 cases per 100,000 per year. These statistics suggest that the MHS may be used to test hypotheses regarding sarcoma epidemiological features, especially for studies that concern military-related exposures. However, nearly 70% of the military beneficiaries who were sarcoma patients were admitted to civilian hospitals, as opposed to military treatment facilities. Therefore, population-based studies of sarcoma patients in the MHS should seek means to capture data for patients who are treated outside military facilities. The database used for this study may provide important information regarding these patients. In addition, military health care planners may use the information from this study to develop referral strategies within the MHS.

An internet-based referral/consultation system for the U.S.-associated Pacific Islands: its contribution to orthopedic graduate medical education at Tripler Army Medical Center.

To evaluate the benefit of the Pacific Island Health Care Project (PIHCP) to our orthopedic graduate medical education program, we performed a retrospective review of our 8-year operative experience with patients referred through this program. Between July 1994 and June 2002, 69 patients underwent 79 orthopedic operative procedures. Patients were categorized by primary diagnosis, anatomic site involved, and surgical treatment rendered. Because many of the patients referred from the PIHCP with tumors were noted to have either unusually large lesions or advanced-stage disease, further analyses of tumor stage and pathologic grade were made. Seven of the 14 oncologic cases surgically treated in our department in the past 8 years were referrals from the PIHCP. Unique operative procedures performed for these tumor patients included one forequarter amputation, one hip disarticulation, one hemipelvectomy, two partial scapulectomies, and one distal ulna excision. We conclude that the PIHCP referrals provide an important and relatively unique contribution to the clinical and operative experience of our orthopedic residents. These patients from the Pacific basin also enhance our orthopedic graduate medical education program by exposing our residents to the special socioeconomic and cultural issues related to caring for people from developing insular countries.

Tuberculous tenosynovitis of the tibialis anterior tendon: a case report.

Tuberculous tenosynovitis is an uncommon form of extrapulmonary tuberculosis occurring primarily in the hands and wrists with limited reports involving the lower extremities. We report a rare case of tuberculous tenosynovitis of the tibialis anterior tendon occurring in a 37-year-old Filipino male. The tendon was surgically debrided and the patient was given a six month course of antituberculin chemotherapy. At one year postoperatively, the patient has good function with no evidence of recurrence.