Although our patients had better recovery of range of motion than those reported in other studies, the terrible triad of the elbow can lead to joint instability, osteoarthritis, arthrosis, and joint stiffness, and may resort to total elbow arthroplasty in some cases.

Hydatid disease is a parasitic infection generally occurring in specific geographical areas. Exclusive involvement of the muscles is extremely uncommon, because implantation at this site would require passage through the filters of the liver and lung. We describe a patient with a mass in the popliteal fossa of the knee for 7 years who was seen for pain and was found to have hydatid disease.

Routine use of drains in total knee arthroplasty (TKA) is controversial. The aim of this study is to define the hourly risk of bleeding in the first 24 h following TKA using a survival study, to detect factors that might modify this risk, and establish a predictive model. In a retrospective study including 112 knees, patients with a coagulation disorder, platelet disease, or anticoagulation treatment were excluded. The risk factors studied included anesthesia score of the American society of anesthesiologists (ASA), proteinemia, total volume of fluid drained, and the use of low molecular weight heparin. The Kaplan-Meier test, Mantel-Haenszel test, and Cox regression analysis were used for the statistical calculations. The results indicate that the drains used in TKA can be removed within the first 18 h with a high degree of safety and low risk of persistent bleeding. The evolution of postoperative bleeding was independent of the factors studied.

Synovial hemangioma is a benign vascular tumor. While mainly affecting the knee, it can also appear in other joints or tissues. The condition is very rare in children. A delay between debut and diagnosis due to its unspecific symptomatology is common. We report a case of a boy affected by an intra-articular synovial hemangioma of the knee with a debut at the early age of 10 months, the youngest reported in English literature.