Lower limb injuries in american football players in Poland.

Background: The aim of the study was to determine the location and types of injuries in the lower limbs in American football players in Poland. The circumstances of the injuries were identified, with particular emphasis on the player's position on the field.

Methods: Original questionnaire to investigate 70 consecutive Polish players was used.

Chemical Compounds Released from Specific Osteoinductive Bioactive Materials Stimulate Human Bone Marrow Mesenchymal Stem Cell Migration.

In this work, a poly(L-lactide--glycolide) (PLGA)-based composite was enriched with one of the following sol-gel bioactive glasses (SBG) at 50 wt.%: A1-40 mol% SiO, 60 mol% CaO, CaO/SiO ratio of 1.50; S1-80 mol% SiO, 20 mol% CaO, CaO/SiO ratio of 0.

Relationship between the hip range of motion and functional motor system movement patterns in football players.

Background: The aim of this study was to determine the hip range of motion and the movement patterns of football players assessed with an aid of a Functional Motor Systems test, and to find an association between these parameters and the risk for hip joint injury.

Methods: The study included 50 men aged between 16 and 20 years: 25 footballers and 25 age- and body mass index-matched controls. The hip ranges of motion (flexion, extension, internal and external rotation, adduction and abduction) were determined, and the movement patterns were evaluated with the tests from the Functional Motor Systems battery.

The role of CaO/SiO ratio and PO content in gel-derived bioactive glass-polymer composites in the modulation of their bioactivity and osteoinductivity in human BMSCs.

We obtained a range of PLGA-based composites containing sol-gel bioactive glasses (SBG) from the SiO-CaO and SiO-CaO-PO systems. Eight SBGs with different CaO/SiO ratios with and without PO were incorporated at 50% w/w to PLGA matrix and structured into thin films suitable for cell culture. The SBG/PLGA composites were examined for their bioactivity in simulated body fluid (SBF), ion release profile in culture media with and without cells, and osteoinductivity in standard human bone marrow stromal cell (hBMSC) cultures without osteogenic growth factors.

In vitro osteogenic potential of collagen/chitosan-based hydrogels-silica particles hybrids in human bone marrow-derived mesenchymal stromal cell cultures.

The aim of this study was to assess osteogenic potential of three groups of biopolymeric hydrogel-based surfaces made of plain collagen, chitosan or collagen/chitosan, crosslinked with genipin or all three biopolymers modified with silica particles of two sizes (S1=240nm and S2=450nm). Biocompatibility and osteoinductive properties of the resulting composites were analyzed in the human bone marrow-derived mesenchymal stromal cells (hBMSCs) in vitro cultures. It was revealed that all tested materials are biocompatible and significantly enhance ALP activity in hBMSCs which was particularly pronounced for collagen/chitosan based hybrids.

Activity and Quality of Life after Total Hip Arthroplasty.

Background: Coxarthrosis is a chronic musculoskeletal condition that causes severe pain and considerable limi-tation of the patient's motor performance. Total hip arthroplasty is one of the most common and effective methods used in the treatment of advanced degenerative changes. The aim of the present study was to evaluate the activity and quality of life of patients after unilateral total hip arthroplasty.

The role of vasculature in bone development, regeneration and proper systemic functioning.

Bone is a richly vascularized connective tissue. As the main source of oxygen, nutrients, hormones, neurotransmitters and growth factors delivered to the bone cells, vasculature is indispensable for appropriate bone development, regeneration and remodeling. Bone vasculature also orchestrates the process of hematopoiesis.

Treatment of reverse obliquity intertrochanteric fractures.

Background: Unstable intertrochanteric fractures of the hip, especially reverse oblique fractures are a serious problem in traumatology, as there is no standard method of treatment and inadequate treatment carries a significant complication rate. To assess the surgical treatment results of reverse oblique trochanteric fractures.

Material/methods: Between 1997-2010, 389 patients with intertrochanteric fractures were treated.

Kinetic and kinematic characteristics of natural velocity gait in anterior cruciate ligament-deficient patients.

This study evaluates changes in the knee following anterior cruciate ligament (ACL) injuries by presenting the kinematic characteristics of the ankle and hip joints and the pelvis, and assessing the dynamic forces applied by knee joint muscles under isokinetic conditions to identify compensatory mechanisms. Seventeen ACL-deficient males, 16-47 years of age, participated in the study, and measurements were taken an average of 24.4 months after their injuries occurred.

Degradation, bioactivity, and osteogenic potential of composites made of PLGA and two different sol-gel bioactive glasses.

We have developed poly(L: -lactide-co-glycolide) (PLGA) based composites using sol-gel derived bioactive glasses (S-BG), previously described by our group, as composite components. Two different composite types were manufactured that contained either S2-high content silica S-BG, or A2-high content lime S-BG. The composites were evaluated in the form of sheets and 3D scaffolds.

Gel-derived bioglass as a compound of hydroxyapatite composites.

Despite the excellent biocompatibility of hydroxyapatite and bioglass, their clinical applications are limited to non-load-bearing implants and implant coatings due to their low mechanical properties. We have developed two different composites made of hydroxyapatite (HA) and gel-derived bioglasses designated S2 (80 mol% SiO(2)-16 mol% CaO-4 mol% P(2)O(5)) or A2 (40 mol% SiO(2)-54 mol% CaO-6 mol% P(2)O(5)). We show that the combination of hydroxyapatite with either bioglass results in better composite bioactivity and biocompatibility compared to HA alone.

[Total hip replacement in young patients with use of MAYO prosthesis--early result of treatment].

Authors presented the results of the treatment of osteoarthritis of the hip with MAYO endoprosthesis. The paper is focused on young adults. 34 operations in the 2000-2006 were performed.

Use of reamed locked intramedullary nailing in the treatment of aseptic diaphyseal tibial non-union.

Background: Tibial fractures have been associated with the highest rates of bone union disturbances for many years. Stabilization of the tibial shaft with a reamed intramedullary nail is now being increasingly recommended as a treatment of choice. The aim of this study was to evaluate the outcomes of treatment of tibial shaft non-union with reamed intramedullary nails locked distally and proximally.

Treatment of femoral shaft union disturbances with intramedullary nailing. Treatment failure.

Background: The paper contains an analysis of the treatment outcomes of intramedullary nailing for femoral shaft non-union.

Materials And Methods: Twenty-two patients were treated between 1999 and 2005 with locked intramedullary nailing for femoral shaft non-union. The average age was 38.

[Interlocking intramedullary nail with reaming of bone marrow cavity in treatment of tibia and femur pseudarthrosis].

The aim of this paper was to assess the results of treatment of pesudoarthrosis of the tibia and femur with reamed interlocked intramedullary nailing. A group of 17 patients with pseudoarthrosis of long bones were treated. Pseudoarthrosis were located in 10 cases in the tibia and in 7 cases in the femur.

[Revision arthroplasty in aseptic loosening of cemented sockets of hip prosthesis].

The aim of this paper was to assess early results of revision arthroplasty in aseptic loosening of cemented sockets. A group of 67 patients (53 females and 14 males) age ranging from 47 to 78 years (average: 72 years) who underwent revision arthroplasty because of aseptic loosening of cemented sockets. Early surgical treatment can spare the patient from a risky procedure and lead to better end results.