Posterior Cruciate Ligament Reconstruction With Quadriceps Tendon-Patellar Bone Autograft.

Multiple surgical techniques for posterior cruciate ligament reconstruction have been described and subsequently scrutinized. We describe a surgical technique using full-thickness quadriceps tendon-patellar bone autograft in single-bundle, all-inside posterior cruciate ligament reconstruction that offers the following advantages over traditional technique: This technique mitigates the risk of tunnel widening and convergence while preserving bone stock, eliminating the killer turn, allowing for suspensory cortical fixation to optimize stabilization, and using a bone plug that allows for faster graft incorporation.

It's Not About the Money: Continued Treatment and Survival Outcome Disparities in Minority Rectal Cancer Patients After Controlling for Socioeconomic Factors.

BACKGROUND: While the disparities for minority patients with cancer have been well established, few studies have illustrated disparities in cancer outcomes while controlling for potential confounding factors. The current study was designed to address these confounding variables and how they influence the treatment and survival time for patients with rectal cancer. METHODS: Using the Surveillance, Epidemiology, and End Results database, black and Hispanic patients were compared with white patients with rectal cancer for the rates of chemotherapy, radiation, and surgery in addition to survival time after diagnosis. Following this analysis, confounding variables were controlled for and analysis was repeated with groups of comparable demographic variables. RESULTS: Before controlling for confounding variables, there were significant differences in treatment and survival for both Hispanic and black patients compared with white. Following matching, black patients continued to have lower rates of treatment and shorter survival times. CONCLUSIONS: These differences in treatment methods and survival outcomes for minorities, particularly black patients, highlight the need for more advocacy and focus on these underrepresented populations with rectal cancer.

Anterior Cruciate Ligament Reconstruction with Quadriceps Tendon-Patellar Bone Autograft and Dual Tibial Fixation.

Anterior cruciate ligament ruptures are a relatively common injury in the athletic population, and surgical reconstruction is often indicated to restore knee stability. While hamstring tendon and patellar bone-tendon-bone autografts are a well-established graft choice in this population, there has been a growing body of literature supporting the benefits of quadriceps tendon autograft. Our technique illustrates a full-thickness quadriceps tendon-patellar bone autograft with dual tibial fixation using an interference screw and backup suspensory anchor fixation.

Does simulated walking cause gapping of meniscal repairs?

BACKGROUND: The objective of rehabilitation following meniscal repair is to promote healing by limiting stresses on repairs, while simultaneously preserving muscle strength and joint motion. Both protective protocols limiting weight bearing and accelerated which do not, have shown clinical success. This study assesses the effects of physiologic gait loading on the kinematic behavior of a repaired medial meniscus. METHODS: The medial menisci of eight fresh cadaveric knees were implanted with arrays of six 0.8-1.0 mm beads. Pneumatic actuators delivered muscle loads and forces on the knee as each specimen was subjected to a simulated stance phase of gait. Meniscus motion was measured at loading response, mid stance, and toe-off positions. Measurements were performed using biplanar radiography and RSA, with each knee: (a) intact, (b) with posterior longitudinal tear, and (c) after inside-out repair. RESULTS: The tissue spanning the site of the longitudinal tear underwent compression rather than gapping open in all states (intact [I], torn [T] and repaired [R] states). Average compression at three sites along the posterior half of the meniscus was: posterior horn -0.20 ± 0.08 mm [I], -0.39 ± 0.10 mm [T], and -0.20 ± 0.06 mm [R] (p = 0.15); junction of posterior horn and body -0.11 ± 0.12 mm [I], -0.21 ± 12 mm [T], -0.17 ± 0.09 mm [R] (p = 0.87); and adjacent to the medial collateral ligament -0.07 ± 0.06 mm [I], -0.29 ± 0.13 mm [T], -0.07 ± 0.17 mm [R] (p = 0.35). The entire meniscus translated posteriorly from mid-stance to toe off. Displacement was greatest in the torn state compared to intact, but was not restored to normal levels after repair. CONCLUSION: The edges of a repaired longitudinal medial meniscal tear undergo compression, not gapping, during simulated gait.

Radiation-induced osteosarcoma of the hand: case report.

Radiation-associated sarcomas represent less than 5% of all sarcomas and can arise from previously irradiated bone or soft tissue. We report a case of radiation-associated osteosarcoma that developed in the hand of a patient who had previously been treated for synovial sarcoma. Despite aggressive, multimodality treatment, the disease progressed rapidly. This case highlights the need for patients and treating physicians to be aware of this potential complication of radiotherapy to the hand.

Acute epidural lipedema: a novel entity and potential complication of bone morphogenetic protein use in lumbar spine fusion.

BACKGROUND CONTEXT: Bone morphogenetic proteins (BMPs) induce osteogenesis, making them useful for decreasing time to union and increasing union rates. Although the advantages of BMP-2 as a substitute for iliac crest graft have been elucidated, less is known about the safety profile and adverse events linked to their use in spinal fusion. An accumulation of reactive edema in the epidural fat may lead to neural compression and significant morbidity after lumbar spinal fusion. Bone morphogenetic protein has never been implicated as a cause of spinal epidural lipedema. PURPOSE: We report on a case of rapid accumulation of edematous adipose tissue in the epidural space after lumbar spine decompression and fusion with bone morphogenic protein. STUDY DESIGN: Case report. METHODS: The patient was a 45-year-old woman with chronic back pain, worsening bilateral L5 radiculopathy, and degenerative disc disease. Surgery consisting of a one-level transpedicular decompression, transforaminal lumbar interbody fusion, and posterolateral fusion was performed using BMP-2 as an adjunct for arthrodesis. RESULTS: Two days postoperatively, the patient developed progressive cauda equina syndrome. Lumbar magnetic resonance imaging revealed edematous epidural fat extending above the initial laminectomy, compromising the spinal canal, and compressing the thecal sac. Emergent laminectomies at L3, L4, and L5 were performed, and intraoperative pathology revealed edematous epidural adipose tissue. The patient's cauda equina syndrome resolved after spinal decompression and the removal of epidural fat. Final cultures were negative for infection, and histology report yielded an accumulation of edematous fibroadipose tissue. CONCLUSIONS: We present a case of rapid accumulation of edematous adipose tissue causing cauda equina syndrome after a lumbar decompression and fusion surgery. The acute nature and extensive development of the lipedema presented in this case indicate an intense inflammatory reaction. We hypothesize that there may be a link between the use of BMP-2 and the accumulation of this edematous tissue. A thorough understanding of the mechanisms of BMP-2 and specific guidelines for their role in spinal surgery may improve functional outcomes and reduce the number of preventable complications. To the best of our knowledge and after a thorough literature search, this is the only reported case of epidural lipedema causing cauda equina syndrome.