Residual or unaddressed structural deformity of the hip and underlying osteoarthritis are commonly associated with failure after hip arthroscopy. Thorough patient evaluation with detailed characterization of structural hip anatomy and articular cartilage integrity are critical to the selection of proper surgical intervention and successful patient outcome.

Background: Current literature describing the periacetabular osteotomy (PAO) is mostly limited to retrospective case

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This multicenter, prospective, longitudinal cohort is one of the largest FAI cohorts to date. In this cohort, FAI occurred predominantly in young, white patients with a normal BMI, and there were more female than male patients. The disease pattern of cam FAI was most common. Contemporary treatment was predominantly arthroscopic followed by surgical hip dislocation.

Background The treatment of unstable slipped capital femoral epiphysis (SCFE) is rapidly evolving with the ability to correct epiphyseal alignment using the modified Dunn technique. Adopting a new treatment method depends on confirming that it achieves its goals, produces few, nonserious complications with no lasting sequelae, and improves the natural history of the disorder compared with known treatment methods. As such, the rates of osteonecrosis and complications after current treatments of unstable SCFE must be compared with those of newer surgical techniques. Questions/purposes We therefore addressed the following questions: (1) What is the rate of osteonecrosis of the femoral head after treatment of unstable SCFE? (2) What treatment modalities have been used for unstable SCFE and (3) what are the reported complications? Methods We performed a systematic electronic literature search for the keywords unstable and slipped capital femoral epiphysis and identified 199 articles. Of these, 60 met our inclusion criteria. Fifteen articles were included for analysis. Results The literature concerning the treatment and results of unstable SCFE is retrospective Level IV data that suggest an overall rate of osteonecrosis of 23.9%. Multiple treatment modalities were used for unstable SCFE treatment with varying, inconsistently recorded complications over the reporting period. Conclusions We found limited data concerning the rate of osteonecrosis and complications after treatment of unstable SCFE. Considering recent widespread interest in the modified Dunn procedure and the possibility of iatrogenic osteonecrosis, there is a need for prospective studies to identify complications and establish outcome based on standardized scores for established and emerging treatments of unstable SCFE.

"Lower extremityspecific measures of disability and outcomes in orthopaedic surgery

Background The Bernese periacetabular osteotomy (PAO) can relieve pain and restore function in patients with symptomatic acetabular dysplasia. Accurate acetabular correction is fundamental to achieving these clinical goals and presumably enhancing survivorship of the reconstruction. Fluoroscopy is used by some surgeons to assess intraoperative acetabular correction but it is unclear whether the features observed by fluoroscopy accurately reflect those on postoperative radiographs. Questions/Purposes We therefore determined whether the parameters of acetabular correction of PAO correlated on intraoperative fluoroscopic imaging and postoperative radiography. Conclusions Intraoperative fluoroscopic assessment of PAO correction correlated with that from the postoperative radiographic assessment. Measurement of lateral centeredge angle shows the highest correlation with the fewest outliers. Acetabular inclination and anterior center-edge angle also correlated; extrusion index and medial offset distance should be used with more caution.