While critical bone loss has yet to be defined for arthroscopic Bankart reconstruction, our data indicate that "critical" bone loss should be lower than the 20% to 25% threshold often cited. In our population with a high level of mandatory activity, bone loss above 13.5% led to a clinically significant decrease in WOSI scores consistent with an unacceptable outcome, even in patients who did not sustain a recurrence of their instability.

No abstract

Level IV, prognostic case series.

Psychiatric comorbidities are an important risk factor in active-duty military personnel undergoing surgery for femoroacetabular impingement. Mental health medication use is associated with poorer outcome scores and can significantly lower the possibility of returning to active-duty status.

Patient reported outcome measures (PROMs) are key tools when performing clinical research and PROM data are increasingly used to inform clinical decision-making, patient-centered care, health policy and more recently, reimbursement decisions. PROMs must possess particular properties before they are used. Thus purpose of this paper is to give an overview of PROMs, their definition, how their evidence can be assessed, how they should be reported in clinical research, how to choose PROMs, the types of PROMs available in orthopaedics, where these measures can be found, PROMs in orthopaedic clinical practice and what are some key next steps in this field. If PROMs are used in accordance with the guidance in this article, I believe we will gain considerable insight into PROMs in orthopaedics and will advance this field in a way that can contribute to science, improve patient care and save considerable resources. Why Patient Reported Outcome Measures? The development, testing and implementation of tools to aid in the measurement of phenomena in medicine are central to clinical practice and clinical research. Measurements in clinical practice form the basis of diagnosis, prognosis, evaluation and follow-up. Measurements in clinical research allow for the collection of data that afford us the information needed to test specific hypotheses [1]. The field of measurement in medicine includes both psychometrics and clinimetrics [2-4]. But, it has been argued thatthere is little distinction between these two areas [3]. Throughout this paper the term psychometrics will be used and more generally the term measurement to refer to these fields.