Aims. The primary objective of this registry-based study was to compare patient-reported outcomes of cementless and cemented medial unicompartmental knee arthroplasty (UKA) during the first postoperative year. The secondary objective was to assess one- and three-year implant survival of both
Objectives. In order to address acetabular defects, porous metal revision acetabular components and augments have been developed, which require fixation to each other. The
Introduction: The introduction of bioabsorbable materials has improved the ability to offer a simple, fast and friendly user solution, to specific meniscal tears. The technique of meniscal suture with bioabsorbable tacks is associated with lower morbidity and lower complication rate. Methods: Between 1997 and 2004, 14 patients underwent arthroscopic all-inside meniscus repair. We used Biofix bioabsorbable tacks
We have evaluated four different
Introduction: The complex anatomy and biomechanics of the atlantoaxial motion segment impose technical challenges in the achievement of safe and successful surgical stabilization and fusion. The coauthors have recently reported successful clinical results using a novel C1-C2 stabilization technique employing C1 multi-axial posterior arch screws (MA-PAS). This study compares biomechanical stability of MA-PAS with two established multi-point
Existing techniques of posterior multi-point C1/2 stabilisation are technically demanding and can be hazardous. The coauthors have recently reported successful atlantoaxial fusion using a novel C1/2 stabilisation technique employing C1 multi-axial posterior arch screws (MA-PAS) in a clinical series of three patients where anatomical anomalies precluded established techniques. The technically less demanding nature of this new technique, and possible wider application in patients with normal anatomy, led the authors to investigate its biomechanical stability compared to other established techniques. Twenty-four human fresh-frozen cadaveric spines were harvested C0-C5. Motion was restricted to between C0 and C4. Each spine was non-destructively tested in flexion/extension, lateral bending and axial rotation, firstly in the intact state and then after Type 2 odontoid fracture destabilisation and insertion of Magerl-Gallie, Unicortical Harms, Bicortical Harms or MA-PAS instrumentation. ROM between C1 and C2 was monitored using two digital cameras. Results for each technique were compared statistically compared using ANOVA. The C1-C2 joint of the intact spines demonstrated high flexibility in flexion/extension (16.5deg). After instrumentation all specimens showed significantly reduced ROM in flexion/extension (Magerl-Gallie FE = 4.2deg, Unicort Harms FE = 7.2deg, Bicort Harms FE = 4.4deg). Lateral bend ROM of instrumented specimens (Magerl-Gallie LB =3.8deg, Unicort Harms LB = 3.8deg, Bicort Harms LB =2.3 deg) was, however, similar or slightly greater than intact (2.7 deg) . MA-PAS showed similar ROM in flexion/extension (4.2 deg) as the Magerl-Gallie and Harms techniques but was slightly higher in lateral bend (5.3 deg). The MA-PAS technique was shown to have similar biomechanical stability to the Magerl-Gallie and Harms techniques. Given the demonstrated biomechanical stability of the MA-PAS technique, it may be a suitable alternative to the existing technically demanding, and possibly more hazardous, multi-point
Anatomic reduction (subcapital re-alignment osteotomy) via surgical hip dislocation – increasingly popular. While the reported AVN rates are very low, experiences seem to differ greatly between centres. We present our early experience with the first 29 primary cases and a modified
Distal radial fractures represent 17% of fractures in the Italian E.R. In the last years many different techniques accompanied the traditional treatment of closed reduction and cast immobilization such as closed reduction + pinning + cast, “epi-block” fixation, ORIF with dorsal and/or volar plates, screws and external
In Displaced Intracapsular Hip Fractures (ICHF) in young active patients, preservation of the femoral head and its blood supply are of high importance and urgent surgical treatment with anatomic reduction and internal fixation is the preferred intervention. Due to the strong varus displacement shear forces exerted across the hip, there are relatively high complication rates after fixation. There is no consensus regarding the optimal fixation device or technique. This retrospective study compared closed reduction internal fixation method using cannulated cancellous screw (CCS) with the Targon Femoral Neck (TFN) hip fixed angle screw. Data regarding, gender, operational data, duration of surgery, complications, NAS (Numerical Analogue Scale) pain score, Modified Harris Hip Score (MHHS) and SF-12 scores were retrieved for patients younger than 65 with displaced ICHF. Eighty-two patients were included in the study, 30 patients treated with CCS were compared to 52 patients treated with TFN. Fracture configuration (Garden and Pauwel classifications), mean time to surgery and complication rate did not differ significantly. Operative time did differ significantly between groups (CCS 56 minutes, TFN 92 minutes, p<0.001). At final follow-up the CCS group reported less pain (NAS 2.3 vs 3.5, p< 0.049) and better Mental Health Composite score of SF-12 (p=0.017) compared to the TFN group. Complication rates for the treatment of displaced ICHF with TFN and CCS showed no significant differences; however, the functional outcomes, as presented by the NAS and Mental Health Composite score of SF-12, showed superiority for CCS treatment. As this fixation method is related to reduce costs, we suggest CCS for the treatment of displaced ICHF in the young population.
Post operative stability is of paramount importance to obtain bone in growth and a tight interface in uncemented implants. Although hemispherical press fit cups are widely used different opinions exists according optimal fixation and a variety of principles are preferred. Lab studies show better stability if a cup is augmented by screws or pegs. However, cups with screws and holes increases penetration of joint fluid, pressure and particles to the interface with a risk for osteolyses. HA coating is in many studies favourable to obtain a quick in growth but is by many regarded unnecessary or even a risk for increased wear. This RSA studie was done to investigate stability and wear in cups with different fixation.
Mann-Whitneys U-test was used on signed values for evaluation of group differencies.
Wear was 0.45 mm proximally and in total 0. 6 mm without any sign of differences between the HA and porous coated groups. HA coated cups had less radiolucent lines after 2 years. (p=0.01)
Purpose of the study: Conservative surgical treatment of osteochondritis dissecans (OCD) in adults raises the problem of integration of the sequestered bone. Mechanical techniques using screw fixation are often insufficient to achieve healing. Adjunction of a biological fixation with osteochondral graft tissue for a mosaicplasty might favour integration of the fragment. The purpose of this study was to assess the short-term outcomes in an initial series using a
We studied the radiographs of 211 low-friction arthroplasties, followed for five to 15 years after operation. The first 92 simple hemispherical sockets were fixed with an old technique: eburnated bone in the acetabular roof was removed and only a few large anchor holes were bored for cement fixation. With the next 119 sockets, 111 of which were flanged, the eburnated and subchondral bone was preserved and multiple small anchor holes were used. The modified technique and the use of flanged sockets significantly improved the late radiological findings as regards socket demarcation and wear. On the femoral side, the intramedullary canal filling ratio, the distal packing of cement, calcar resorption and atrophy of the femoral cortex were correlated with prosthetic subsidence.
Tibiotalocalcaneal fusion is generally reserved for complex cases such as severe deformity or bone loss, infection, Charcot and revision procedures. Subsequently published series have been small and there are no studies comparing plate fixation and intramedullary nailing. We present the outcomes in the largest series to date and have also compared the union rate and complication rate between blade plate fixation (36) and intramedullary nailing (46). Both groups were well matched for patient and disease factors. There was a non-statistically significant trend towards better outcomes with nails. Further analysis was conducted comparing the two fixation methods by the indication for surgery, there were no statistically significant differences, the reasons for these findings are discussed.
There exists two important pathologies in degenerative lumbosacral kyphosis (flat back), such as loss of lumbar lordosis and posterior rotation of the pelvis. Patients with this deformity complaint marked fatigue in lumbosacral region and disturbances on standing and walking. Conservative treatment is seemed to be difficult, and surgical treatment may be selected for this deformity. Our surgical strategy is posterior shortening and anterior rotation of pelvis. Surgical procedure is tranvertebral decancellation closed wedge osteotomy, correction by shortening and lumbosacral fixation by intrasacral method. Radiographic assessment around the hip axis was performed by Jackson method on standing entire spine film. 5 females and 2 males were operated on by this method. Mean age at the operation was 67 yrs (57–82). Mean follow-up was 24 months (12–36). Mean operative time was 480 minutes (320–600). Mean estimated blood loss was 1440ml (985–2415). Mean pelvic angle was 41 degrees before the operation. At follow-up, mean value was 33 degrees. Preoperative mean local kyphosis was 4.7 degrees. Postoperative mean local lordosis was 24.1 degrees, average correction was 30 degrees. No loss of correction occurred in fused area. Clinical symptoms were remarkably improved after the operation. There was no major complication in this series.
Repair of large rotator cuff tears can be a demanding technical exercise, particularly when patients are elderly and tissue quality for repair is poor. In 25 patients we have used a method of tying rotator cuff sutures over a screw fixation post at the level of the surgical neck to secure the torn cuff to the greater tuberosity while healing occured. This study reports the results of these patients. 25 patients (27 shoulders) of average age 68.5 years were reviewed at an average of 22 months post surgery (range 3– 52 months). 4 patients (6 shoulders) were workers compensation injuries. The Constant method of shoulder assessment and visual analogue pain scores were used. Constant scores improved from an average of 30.6 pre-operatively to 75.2 post operatively. Pain scores improved from an average of 7.2 pre-operatively to 2.2 post operatively. Over 80 % of patients reported being very satisfied with the results of their procedure. 2 patients reported being unsatisfied with their procedure. Workers compensation patients had poorer results for pain and function than the group average but still reported good satisfaction with the procedure. 4 complications occurred. 2 patients had re- tears of their cuff after falls. One was repaired with side to side suturing and the other was re-repaired to the post. 1 wound infection occurred requiring arthroscopic shoulder lavage and final removal of the implant. This shoulder subsequently healed with good function. One patient had significant shoulder pain requiring surgery and removal of the fixation post. There were no other cases of screw irritation and no axillary nerve palsy or deltoid avulsions were found.
Meniscal root tears can result from traumatic injury to the knee or gradual degeneration. When the root is injured, the meniscus becomes de-functioned, resulting in abnormal distribution of hoop stresses, extrusion of the meniscus, and altered knee kinematics. If left untreated, this can cause articular cartilage damage and rapid progression of osteoarthritis. Multiple repair strategies have been described; however, no best fixation practice has been established. To our knowledge, no study has compared suture button, interference screw, and HEALICOIL KNOTLESS
Aims. The purpose of this systematic review was to determine the rates of union for vascularized versus non-vascularized grafting techniques in the operative management of scaphoid nonunion. Secondary aims were to determine the effect of the
Aims. Total hip arthroplasty (THA) is a very successful and cost-effective operation, yet debate continues about the optimum fixation philosophy in different age groups. The concept of the 'cementless paradox' and the UK 'Getting it Right First Time' initiative encourage increased use of cemented fixation due to purported lower revision rates, especially in elderly patients, and decreased cost. Methods. In a high-volume, tertiary referral centre, we identified 10,112 THAs from a prospectively collected database, including 1,699 cemented THAs, 5,782 hybrid THAs, and 2,631 cementless THAs. The endpoint was revision for any reason. Secondary analysis included examination of implant survivorship in patients aged over 70 years, over 75 years, and over 80 years at primary THA. Results. Cemented fixation had the lowest implant survival in all age groups, with a total ten-year survivorship of 97.0% (95% confidence interval (CI) 95.8 to 97.8) in the cemented group, 97.6% (95% CI 96.9 to 98.1) in the hybrid group, and 97.9% (95% CI 96.9 to 98.6) in the cementless group. This was not statistically significant (p = 0.092). There was no age group where cemented fixation outperformed hybrid or cementless fixation. Conclusion. While all