The Harvard Program of Galactic Explorations.

The effect of variation of stellar dispersion velocities by the galactic latitude in interpreting gravitational microlensing observations

Our galaxy is a spiral galaxy and its stars are mostly in a thin disk and rotate around the galactic center. The vertical component of the dispersion velocity of stars is a function of the galactic latitude and decreases with increasing it. In the galactic Besancon model, this dependence is ignored and they just consider the dependence of dispersion velocity on the stellar age. Becanson model i...

Decentralization and Regionalization of Surgical Care: A Review of Evidence for the Optimal Distribution of Surgical Services in Low- and Middle-Income Countries

Background While recommendations for the optimal distribution of surgical services in high-income countries (HICs) exist, it is unclear how these translate to resource-limited settings. Given the significant shortage and maldistribution of surgical workforce and infrastructure in many low- and middle-income countries (LMICs), the optimal role of decentralization versus regionalization (ce...

A Randomized Controlled Pilot Study of Educational Techniques in Teaching Basic Arthroscopic Skills in a Low-Income Country

Background: Little is known about how to introduce complex technologies like arthroscopy into low-income countries. Thus, we compared low- versus high-resource intensive methods of teaching basic arthroscopic skills in a randomized controlled trial in Haiti. Methods: Forty-eight Haitian orthopaedic surgeons and residents attending an orthopaedic conference in Haiti were block randomized to rec...

The Human Resources for Health Program in Rwanda: A Response to Recent Commentaries

Implant Removal Matrix for the Upper Extremity Orthopedic Surgeon

Orthopedic implant removal is a commonly performed procedure. While implant removal can be associated withimproved symptoms, risks of the surgery are notable. Stripped screws, broken and retained hardware, and morbidityassociated with soft tissue compromise during difficult removal are all common. Familiarity with the instruments iscritical to procedure success. The purpose of...