Associated Factors For In-Hospital Mortality Following Hip Fracture

The incidence of hip fractures is increasing within the aging population.We determined the risk factors of in-hospital mortality following hip fracture across major hospitals in Malaysia. This is a retrospective cohort review from 18 hospitals across Malaysia in National Orthopaedic Registry of Malaysia (NORM) . We collected demographic data, pre-fracture co-morbidities, previous hip fracture, pre-fracture walking ability, fracture type and stability, mechanism of injury, type of management (operative or non-operative), operation types and grade of surgeon. Between 2008 and 2009, 685 patients were admitted with a hip fracture to 18 government hospitals with orthopaedic service. The overall in-hospital mortality was 2.2%. We found more in-hospital mortality in elderly patients and patients with eye and hearing problems as pre-fracture morbidity. In conclusion, patients who were elderly with multiple co-morbidities especially those with eye and hearing impairment were had higher risk for immediate mortality.

An Analysis of the Relationship between the Morphometry of the Distal Femur, and Total Knee Arthroplasty Implant Design

Current available implants for total knee replacement are based on the mormphometry of the Caucasian knee. We believe there are significant morphometric differences in the Asian knee that will be relevant in future implant designs. Sixty nine consecutive patients (80 knees) underwent computer navigated primary total knee arthroplasty. The anterior posterior (AP) length, and the medial lateral (ML) width of the distal femur, were analyzed, with respect to the final sizing details of four implants (femoral component) commonly used locally. The mean AP length was 59.9 (SD 4.8) mm, and the mean ML width was 65.0 (SD 5.0) mm. The overall mean aspect ratio (ML/AP) was 1.09 (SD 0.07). The mean aspect ratio for females was 1.08 (SD 0.07). Both were smaller than the aspect ratio of the implants which ranged from 1.11 to 1.13. All four implants tend to overhang at the medial lateral width of the distal femur. This is more obvious in females. Future implant designs should provide more ML wdth sizes for a given AP length, in addition to gender differences, for ths population.