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Purpose: In the over-80 s, femoral bone is often osteoporotic and unlikely to be conducive to periprosthetic bone rehabitation. This observation often leads to cemented fixation for hemiarthroplasty in femoral neck fracture. Hydroxyapatite is a bioactive coating that has already demonstrated its osteoinductive properties. Our hypothesis is that hydroxyapatite enables prosthetic osseointegration in patients over 80, as well as periprosthetic cortical thickening. The objective was to evaluate the osseointegration of a hydroxyapatite-coated femoral stem in femoral neck fractures in the over-80 s, and the evaluation of the periprosthetic bone regeneration permitted by hydroxyapatite. Methods: This was a retrospective study. Osseointegration and periprosthetic bone regeneration were assessed on pre-operative, immediate post-operative and last follow-up radiographs with Engh score, O-SS score, cortical index, Canal Bone Ration (CBR) and Canal Fill Ratio (CFR). Results: One hundred and forty-six patients were included. At last follow-up, 99.3% (n = 145) of stems were osseointegrated. The mean Engh score was 19.9 [SD 3.1]. The mean O-SS score was 19.1 [SD 2.4], corresponding to very good osseointegration. The mean CBR at last follow-up was 0.48 [SD 0.07], corresponding to a non-osteoporotic femur. There was a significant difference with pre-operative CBR (p < 0,001). The pre-operative cortical index and the index at the last follow-up were significantly different for all levels of measurement (p < 0,001). The CFR at last follow-up was also significantly different with the post-operative CFR (p < 0,001). Conclusion: This study shows the value of using a hydroxyapatite-coated stem on senile, osteoporotic bone to improve cortical thickness along the entire length of femoral bone. [ABSTRACT FROM AUTHOR]

The aim of this study was to analyze the displacements of center of pressure (COP) using an in-shoe recording system (F-Scan) before and after motor nerve block and neurotomy of the tibial nerve in spastic equinovarus foot. Thirty-nine patients (age 45 +/- 15 yr) underwent a motor nerve block; 16 (age 38 +/- 15.2 yr) had tibial neurotomy, combined with tendinous surgery (n = 9). The displacement of the COP (anteropos-terior [AP], lateral deviation [LD], posterior margin [PM]) was compared between paretic and nonparetic limbs before and after block and surgery. At baseline, the nonparetic limb had a higher AP (17.3 vs 12.3 cm,p < 0.001) and LD (4.0 vs 3.3 cm, p = 0.001) and a smaller PM (2.9 vs 4.7 cm,p = 0.001). For the paretic limb, a significant increase of AP was observed after block (13.5 vs 12.3 cm, p = 0.02) and after surgery (13.7 vs 12.3 cm, p = 0.03). A significant decrease of PM was observed after surgery (4.5 vs 3.3 cm, p < 0.001) with no more difference between two limbs (2.8 vs 3.3 cm, p = 0.44). This study shows that the F-Scan system can be used to quantify impairments and be useful to evaluate the effects of treatment for spastic foot. It suggests that changes in AP displacement following block may predict the effects of neurotomy. [ABSTRACT FROM AUTHOR]

Introduction: There are multiple surgical treatment methods for proximal humerus fractures (PHF), but rarely do they provide satisfactory results. The objective of this study was to assess radioclinical outcomes and complications in patients treated using a modern intramedullary nailing system the Telegraph IV. Materials and methods: This is an observational multicenter study cohort conducted between March 2008 and December 2009 on 105 patients admitted with a diagnosis of PHF and operated on two trauma I centers. The Neer and Articular Surgical neck Tuberosities classifications were used for the study. The primary outcome measure was the clinical Constant score. Follow-up of the patients was done at 6 weeks, 3 months, 6 months, 1 year, and 3 years after the procedure. Results: A total of 67 patients (51 women and 16 men) were assessed at a mean of 38 months. The weighted Constant score was 88 %. The mean rate of complications was 16 %. The weighted Constant scores were 84 and 95 % for the 2- and 3-part groups, respectively. Articular 4-part fractures had an average score of 86 % when they were valgus impacted and 67 % for complex disengaged fractures. Notably, the complication rate was 67 % for this latter group. Conclusions: Our clinical results support the use of this antegrade nailing for extra-articular and valgus-impacted articular fractures. This procedure does not appear suitable for displaced articular fracture for which arthroplasty may be indicated by elderly. [ABSTRACT FROM AUTHOR]

Background: Initially considered as an established salvage procedure for tibiotalocalcaneal arthrodesis (TTCA), intramedullary nailing indications have expanded as evidenced in recent literature. We have tried to identify factors influencing functional result and bone union. Methods: In a retrospective study, 30 patients were treated by a TTCA between January 2006 and November 2011. Indications, operative technique, bone fusion, X-rays and functional result [American Foot and Ankle Society (AOFAS) and short-form health survey (SF-36) scores] before and after surgery were registered and analyzed. Results: Thirty cases of TTCA were included. The patient's average age was 52 (range 24-90). Union rate was 86 % for the tibiotalar joint and 74 % for the subtalar joint with an average follow-up of 25.4 months (8-67). The mean AOFAS' score significantly improved (from 37 to 59) as the SF-36' score. Global complication rate was about 56 %. It has not been possible to identify factors significantly influencing bone fusion or functional results. All septic cases achieved fusion without any septic resurgence. Conclusion: Retrograde intramedullary nailing in TTCA is an effective technique, which allows good clinical results even in case of septic history of the patient. Fusion rate and functional results were not significantly influenced by any of the factors examined in this study. [ABSTRACT FROM AUTHOR]