Researchers analyzed fossil data from 7 human ancestors, finding Australopithecus had strong arms but human-like leg pattern, while early Homo had stronger legs and weaker arms, suggesting a major shift in movement and living habits around 2 million years ago. This finding supports the idea that bipedalism evolved gradually, with early...
A major change in human ancestors' movement took place between 3 million and 1.8 million years ago, combining regular tree-climbing with walking on two legs. Early human ancestors like Australopithecus used trees as much as modern chimpanzees and gorillas do today, but when on the ground, they walked on two legs.
A new study from the University of Missouri-Columbia found that NFL players who play wide receiver or tight end are at a higher risk of suffering an injury to their anterior cruciate ligament (ACL). The study examined 520 tears over a ten-year period and found that contact injuries and non-contact mechanisms, such as landing from a jum...
Researchers analyzed a skeleton with a severe knee injury to uncover the complexities of social attitudes towards individuals with disabilities in medieval Europe. The study found that despite negative cultural views, some individuals with disabilities received long-term care and prominent burials.
A new study suggests that ACLR patients have a higher riding patella, shifting load-bearing areas and potentially contributing to osteoarthritis. This finding is observed in both the injured knee and the uninjured contralateral knee.
A $10.8 million trial will enroll 600 patients aged 60+ to determine whether a hip replacement or internal fixation surgery is better for certain types of hip fractures. The study's patient-focused approach aims to inform clinical guidelines and help patients make informed decisions about their care.
University of Texas at Dallas researchers have designed a 3D-printed femur that can help doctors prepare for surgeries and develop treatments for bone tumors. The bone replica is made of polylactic acid, a bio-based polymer, and performed as well as a human femur in biomechanical tests.
A University of Virginia engineer developed a workflow to combine advanced imaging technologies for improved understanding of porous bone, which could inform disease detection. The method allows for three-dimensional rendering of bone structure across various length scales.
A study comparing traditional and new hip replacement stems found larger contact areas in certain femur regions with the new stems. Traditional HA stems, however, demonstrated superior long-term preservation of bone density.
Engineers developed a material that mimics human bone for orthopedic femur restoration, providing optimized support and protection from external forces. This innovative approach uses machine learning, optimization, and 3D printing to create a fully controllable computational framework.
The new diagnostic tool, 3D-DXA, complements DXA with computational and statistical systems to estimate mineral density and obtain detailed three-dimensional images. This method has the potential to improve diagnoses and detect up to 50% more patients at high risk of femur fracture.
A team of researchers analyzed 61 symptomatic and 35 asymptomatic knees with discoid lateral meniscus surgery. They found that larger meniscus sizes were associated with increased knee pain and symptoms. The study's results have important implications for surgical treatment and preoperative imaging.
A new sauropod dinosaur species, Garumbatitan morellensis, was discovered in the Iberian Peninsula. The fossil remains found in Sant Antoni de la Vespa exhibit unique characteristics, including a morphology similar to modern sauropods from the Late Cretaceous.
A new calculator will assess an individual's risk and benefit of taking bisphosphonates for osteoporosis, considering factors such as fracture history and comorbid conditions. The calculator aims to provide personalized guidance on whether a drug holiday is beneficial or not.
A new study found evidence that multituberculates, an extinct group of mammals, likely reproduced in a placental-like manner. This discovery questions the long-held idea that marsupials were less advanced than placentals in terms of reproductive strategy.
Researchers found physical differences in femur, dental structures across specimens suggesting re-categorization into three groups or species. Two new species, T. imperator and T. regina, are proposed based on analysis of 37 Tyrannosaurus specimens.
Researchers from University of Southern Denmark analyze fragments of a tibia, femur, and mummified foot attributed to the apostles, finding the femur dates back to AD 214-340, not St. James' time, casting doubt on their authenticity. The study sheds light on early Christian traditions and practices surrounding relic movements.
A giant bird, Pachystruthio dmanisensis, has been discovered in a Crimean cave, estimated to weigh around 450kg. The bird is believed to be flightless but fast, and its discovery suggests it may have been a source of meat for early humans.
Researchers discovered a nearly complete skeleton of the ancient fish Rhizodus hibberti, featuring a novel skeletal pattern in its pelvic fins. The findings suggest that developmental mechanisms were more flexible in early tetrapods, allowing for varied skeletal patterns before the familiar one-to-two limb structure emerged.
Researchers at NC State University have found a more accurate way to assess an individual's age at death using bone mineral density, increasing the margin of error from 27-70 years to within 13 years. The technique could be used to help identify human remains.
A new study of 119 children with osteogenesis imperfecta found that bisphosphonate treatment did not change the radiological appearance of femur fractures.
Australopithecus afarensis fossils suggest Lucy's arms were used for tree movement, while her leg bones indicate a less efficient walking gait, limiting mobility on the ground. This study provides direct evidence that early human ancestors spent time in trees, potentially for millions of years.
Researchers at McGill University have developed a new hip replacement that tricks the host bone into staying alive by mimicking the varying porosity of real bones. The implant is less solid than current ones but still strong, avoiding common problems such as bone resorption and pain.
A new study published in the Journal of Bone and Joint Surgery found that osseointegrated implants have a minimal risk of severe infection in patients with above knee amputations. The implants, which grow directly into the bone, provide greater comfort and mobility compared to traditional prosthetic systems.
A 500,000-year-old human femur discovered in Morocco shows evidence of being consumed by large carnivores like hyenas. The bone fragment featured fractures and tooth marks, suggesting carnivore chewing, which was likely made shortly after death.
Osteoporosis medications bisphosphonates have significantly reduced fracture risks but also increase the risk of atypical femur fractures. Treatment involves stopping the drug and supplementing with calcium and vitamin D.
Scientists have discovered that Neanderthals from the French region of Poitou-Charentes performed perimortem corporal manipulations on adults and children, including cutting, beating, and fracturing bones. The bone fragments analyzed show clear signs of these manipulations, which may be related to rituals or cannibalism.
A new study finds that routine bisphosphonate treatment can significantly reduce the risk of additional fractures in women over 65 who sustain a distal radius fracture, but at an estimated lifetime cost of $19.5 billion.
New research has found significant differences in the body structure of early human ancestors, including facial features and skeletal traits. The discovery of a 1.9 million-year-old pelvis and femur fossil reveals greater diversity in the human family tree than previously thought.
A team of researchers from Northwestern University has developed a tri-component synthetic graft to replace torn ACLs, utilizing nanotechnology and biomaterials. The artificial ligament's bone-like ends have healed into native bone, anchoring it in place.
A new species of assassin bug, Sinea incognita, has been discovered in the Midwestern United States after remaining undiscovered for over 100 years. The new species was identified by Dr. J.E. McPherson and is distinct from its close relatives, Sinea complexa and Sinea integra.
Research published in BMJ Open found a link between cement use in partial hip replacement and sudden death, cardiac arrest, or severe decline within minutes of surgery. The study analyzed 62 cases of bone cement implantation syndrome (BCIS) between 2005 and 2012.
Research highlights the unique anatomical differences in the female knee that contribute to higher injury rates. Preseason and ongoing neuromuscular training programs can significantly decrease ACL injury risk among girls and women.
Researchers found an association between bisphosphonate use and atypical femur fractures in patients age 50 years and older. The study suggests that the risk is significantly higher for patients treated with bisphosphonates for longer periods, supporting the notion of a causal link.
Scientists discovered 13,435- to 13,738-year-old marks on a Jefferson's Ground Sloth femur, indicating prehistoric humans hunted or scavenged the animal. The findings are the oldest evidence of human activity in Ohio and provide new insights into the lives of prehistoric Ohioans.
Research found that discontinuing bisphosphonates after an atypical femur fracture significantly lowers the risk of a subsequent fracture. Bisphosphonates may suppress natural bone remodeling, leading to brittle bones and increased fracture risk.
Research reveals abnormal femur development in young athletes due to high-intensity sports, leading to osteoarthritis and hip deformity. Athletes are ten times more likely to experience impaired hip function than non-athletes.
Researchers found that heavier individuals have wider femur shafts, hypothesizing this is due to increased weight and altered movement patterns. The study used 121 white male bones to eliminate racial and gender variations.
The John Theurer Cancer Center orthopedic oncologist shares novel approaches to limb sparing surgery, improving patient care for tumors in difficult locations. The educational videos showcase state-of-the-art procedures for radical limb sparing surgery and reconstruction, benefiting patients globally.
A new task force report reveals a possible connection between long-term bisphosphonate use and atypical femur fractures. The report recommends additional product labeling, international patient registry, and research to determine the relationship between the two.
A new study led by UCSF researchers found that unusual femur fractures are extremely rare in patients with osteoporosis, even those taking bisphosphonates for extended periods. The study's findings provide context to reports of these fractures and highlight the importance of weighing treatment benefits against potential risks.
Researchers found that dry deer antlers are stiff and tough, absorbing more energy before shattering than wet bone. This makes them perfectly suited to their role as a weapon in duelling stags.
After 75 years, the disappearance of Everett Ruess has been solved using forensic and DNA evidence. The remains were identified as a male matching Ruess's age and stature through facial reconstruction and mitochondrial DNA analysis.
A Rush University Medical Center study of over 500 hip resurfacing surgeries reveals that complications occur more frequently in women of all ages and men over 55. The most common complication was a fracture of the femoral neck.
A recent US study found that hip resurfacing surgery is not suitable for all patients, particularly those over 55 or female. The procedure's success depends on a patient's age and gender due to differences in bone quality.
Engineers at the University of Bath have developed a diagnostic test that measures sound frequencies produced when the femur bone is vibrated, enabling earlier detection of loosened joints. This method is more sensitive than traditional x-rays and can diagnose smaller gaps, reducing unnecessary surgery.
A study found that the cortical zone of the upper femoral neck becomes thinner with age, reducing its ability to absorb energy before buckling. Exercise may be a potential solution, as it can load this region differently than walking, which is the primary source of load on older adults.
A Neandertal femur found in France suggests that the transition from Middle Paleolithic to Upper Paleolithic marked a shift to greater mobility among humans. Close competition for food and space persisted with hyenas during this period, indicating a more complex human landscape.
A new, low-cost hand-held magnetic surgical tool has been developed to reduce X-ray exposure during long bone repair surgeries. The device uses electronic sensors instead of X-rays to locate screw holes, making the process precise and reducing radiation exposure for surgeons.