Delayed complete limb ischemia following a closed tibial shaft fracture.

We present a 19-year-old collegiate athlete who sustained a low-energy closed tibial shaft fracture. Following closed reduction, the dorsalis pedis and posterior tibial pulses were symmetric to the contralateral limb on physical examination. Angiography later confirmed triple vessel arterial disruption complicated by delayed ischemia requiring limb revascularization. Lower extremity triple vessel occlusion from a low-energy injury is rare, and delayed presentation requiring limb salvage is even more unusual. We review the literature, describe the diagnosis and treatment, and propose a strategy for post-fracture reduction management of vascular status.

Accuracy of magnetic resonance imaging of the knee in the community setting.

BACKGROUND: Magnetic resonance imaging (MRI) is routinely used in the diagnosis of sports-related knee injuries. PURPOSE: To determine the accuracy, sensitivity, and specificity of MRI compared with clinical evaluation in the diagnosis of meniscal pathology when the MRI facility and the radiologist are not preselected. METHODS: A total of 288 knee arthroscopies were retrospectively compared. Patients were divided into 3 groups: those who had MRI performed and interpreted at a single institution, MRI performed and interpreted at community facilities, or a clinical evaluation by a senior orthopaedic surgeon. RESULTS: The sensitivity, specificity, and accuracy of the diagnosis of medial meniscal pathology at a single institution were 90%, 59%, 76%; in community facilities, 73%, 68%, 70%; and by a clinical evaluation, 93%, 55%, 73%, respectively. For lateral meniscal pathology, the results were as follows: single institution, 75%, 76%, 81%; community facilities, 60%, 88%, 79%; and clinical evaluation, 45%, 90%, 79%, respectively. Sensitivity for medial meniscus was greater than for lateral meniscus, but specificity of diagnosis was better for lateral meniscus by MRI and clinical evaluation. While not statistically significant, there was increased sensitivity in the diagnosis of medial meniscus and lateral meniscus at SIs, but they have less specificity than at community facilities. The number of false-positive diagnoses (ie, no intra-articular pathology) that resulted in surgery was 4 of 288 (1.39%). The overall accuracy for medial meniscus by MRI was 73% vs 73% for clinical evaluation. The overall accuracy for MRI for lateral meniscus was 78% vs 79% for clinical evaluation. CONCLUSION: Routine MRI may not be more beneficial than clinical evaluation when there is no preselection of MRI facility and interpreting radiologist. CLINICAL RELEVANCE: The use of MRI for diagnosing meniscal pathology should be reserved for those cases where the orthopaedic clinical examination is ambiguous.

Total knee arthroplasty in a patient with quadriceps paralysis secondary to poliomyelitis: a case report.

Degenerative joint disease is known to occur in patients with a history of polio. However, minimal or absent quadriceps function is generally considered to be a contraindication to total knee arthroplasty. We describe an elderly patient with quadriceps paralysis secondary to poliomyelitis who underwent a successful total knee replacement for severe osteoarthritis. The primary operative indication was disabling pain. At the 1-year follow-up the patient reported excellent pain relief, and there were no clinical or radiographic signs of deformity.