NEWS-Skeletal System

3d-printed Bone

Hyperelastic “bone”: A highly versatile, growth factor–free, osteoregenerative, scalable, and surgically friendly biomaterial Jakus A et al.  Despite substantial attention given to the development of osteoregenerative biomaterials, severe deficiencies remain in current products. These limitations include an inability to adequately, rapidly, and reproducibly regenerate new bone; high costs and limited manufacturing capacity; and lack of …

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Alloplastic substitution of the temporomandibular joint (german)

Alloplastischer Kiefergelenkersatz bei rheumatoider Erkrankung ZM 17/2017, online Die rheumatoide Arthritis ist eine Autoimmunerkrankung und kann im klinischen Verlauf von mildem Gelenkdiskomfort mit kurzer Dauer bis hin zu einer chronischen, stark schmerzenden Polyarthritis mit groben Missbildungen der Gelenke variieren. Patienten im Endstadium einer rheumatoiden Arthritis eignen sich zur chirurgischen Rekonstruktion des Kiefergelenks, um wieder eine …

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An 11- to 15-year clinical outcome study of a total knee arthroplasty

An 11- to 15-year clinical outcome study of the Advance Medial Pivot total knee arthroplasty Karachalios Th, Varitimidis S, Bargiotas K, Hantes M, Malizos KN Survival analysis at 15 years showed a cumulative success rate of 97.3% (95% confidence interval (CI) 96.7 to 97.9) for revision for any reason, of 96.4% (95% CI 95.2 to …

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Custom-milled individual allogeneic bone grafts for alveolar cleft osteoplasty – A technical note

  Surgeons from the Ludwig-Maximilians-University in Munich, Germany, showcase in this technical note the successful repair of an alveolar cleft using maxgraft® bonebuilder, an individualized allogeneic bone graft, in a 36-year old female patient with a 6-month-follow up showing good bony integration. Otto S et al. Today, bone grafts from the iliac crest are most …

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Endoprosthesis Register (Germany) shows reasons for early replacements

Acute replacement of hip joint is followed by twice as much second replacement surgery as at standard scheduled surgery. 78.4% of hip endoprosthesis were placed without cementum. Accompanying illness like depression, overweight and diabetes influence the result. Deutsche Gesellschaft für Orthopädie und Orthopädische Chirurgie The German Endprosthesis-Register (EPDR) lists for 5 years on a voluntary …

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First 3D printed lower jaw implant in China

The first use of 3D printing technology for a lower-jaw reconstruction surgery in China was announced by Shanghai Medical Association, Dental Center at Military Hospital 411. www.3ders.org The patient, Ms. Sun, suffered from a tumor which caused serious damage to her lower jaw. She was discharged from the hospital on the third of January. ‘I didn’t …

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Genium knee joint – insurance (german)

Krankenkasse muss Kosten für Genium-Kniegelenk tragen Hessisches Landessozialgericht Das LSG Darmstadt hat entschieden, dass ein 82-jähriger Versicherter einen Anspruch auf eine Versorgung mit einem Genium-Kniegelenk anstelle mit einem C-Leg-Beinprothesensystem haben kann, wenn ihm das kostenaufwändigere Hilfsmittel einen wesentlichen Gebrauchsvorteil im Vergleich zur kostengünstigeren Alternative bieten kann, den er auch tatsächlich nutzen kann. Ein heute 82-jähriger …

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Gentamicin coating of titanium alloy prevents implant-related osteomyelitis in rats

Gentamicin coating of plasma chemical oxidized titanium alloy prevents implant-related osteomyelitis in rats Biomaterials, Volume 101, issue 0, 156-164 Contamination of implants, bacterial load of bone powder and radiographic as well as histological signs of implant-related osteomyelitis were evaluated after four weeks. Gentamicin-SDS coating prevented implant contamination in 10 of 10 tibiae and gentamicin-tannic acid …

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Nasal chondrocyte-based engineered autologous cartilage tissue

Nasal chondrocyte-based engineered autologous cartilage tissue for repair of articular cartilage defects: an observational first-in-human trial Mumme M, Barbero A, Miot S, Wixmerten A, Feliciano S, Wolf F etal. Hyaline-like cartilage tissues, engineered from autologous nasal chondrocytes, can be used clinically for repair of articular cartilage defects in the knee. Future studies are warranted to …

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Osteogain® loaded onto an absorbable collagen sponge

Osteogain® loaded onto an absorbable collagen sponge induces attachment and osteoblast differentiation of ST2 cells in vitro. Miron et al. RESULTS: ACS efficiently loaded nearly 100% of the amelogenin proteins found in Osteogain® which were gradually released up to a 10-day period. Osteogain® also significantly induced a 1.5-fold increase in cell attachment and resulted in …

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Patient Dissatisfaction Following Total Knee Arthroplasty

Patient Dissatisfaction Following Total Knee Arthroplasty: A Systematic Review of the Literature R Gunaratne et al. Dissatisfaction following total knee arthroplasty (TKA) is common. Approximately 20% of patients report dissatisfaction following primary TKA. This systematic literature review explores key factors affecting patient dissatisfaction following TKA.   This review found that patient dissatisfaction pertains to several …

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Patient Dissatisfaction Following Total Knee Arthroplasty: A Systematic Review of the Literature

Dissatisfaction following total knee arthroplasty (TKA) is common. Approximately 20% of patients report dissatisfaction following primary TKA. R Gunaratne, DN Pratt, J Banda, DP Fick, RJK Khan, BW Robertson This review found that patient dissatisfaction pertains to several key factors. Patient expectations prior to surgery, the degree of improvement in knee function, and pain relief …

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Patients of faulty hip implants can seek damages

India: All patients of DePuy ASR™´s (Johnson and Johnson) faulty hip implants can seek damages Teena Tacker New Delhi: Anyone suffering from faulty hip implants by pharma giant Johnson and Johnson Pvt. Ltd (J&J) can apply for compensation, and not just those who have undergone revision surgery, the chairman of the central expert committee on …

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Proprioception from a neurally controlled lower-extremity prosthesis

  Although there have been many attempts to create human-mechatronic interactions, there is still no robust, repeatable methodology to reflect proprioceptive information from a synthetic device onto the nervous system. To address this shortcoming, we present an agonist-antagonist myoneural interface (AMI). The AMI is composed of (i) a surgical construct made up of two muscle-tendons—an …

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Satisfaction with Total Knee Prosthesis (german)

Satisfaction with Knee-TEP depends mostly from expectations, grade of functional improvement and pain course. Roland Fath Laut einem systematischen Literatur-Review mit Daten von 2005 bis 2016 hängt die Zufriedenheit von Patienten mit Knie-TEP in erster Linie von den Erwartungen vor dem Eingriff, vom Ausmaß der Funktionsverbesserung und dem Schmerzverlauf ab (2). Bei korrekter Indikation, chirurgisch …

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Silica sol-gel hybrid coatings for metal implants

Control of the degradation of silica sol-gel hybrid coatings for metal implants prepared by the triple combination of alkoxysilanes Romero-Gavilán F, Barros-Silva S,  García-Canadas J, Palla B, Izquierdo R, Gurruchaga M, Goñi M, Suay J Development of new hybrid sol-gel coatings based on triple mixtures of alkoxysilanesTEOS alkoxysilane ability to tune sol-gel DegradationProtective behavior of MTMOS:GPTMS:TEOS coatingsA compromise between metal protection and silica sol-gel …

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Tissue-engineered intervertebral disc implant

Long-term mechanical function and integration of an implanted tissue-engineered intervertebral disc Gullbrand SE, Ashinsky BG, Bonnevie ED et al. Intervertebral disc degeneration causes back and neck pain, sometimes necessitating disc fusion surgery. Although fusion may alleviate symptoms, it does not address the underlying cause of degeneration. As an alternative to fusion, Gullbrand and colleagues developed …

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Total Knee Replacement – Computer-Assisted versus Conventional

Computer-Assisted Compared with Conventional Total Knee Replacement G Petursson et al. In this study, the use of computer navigation provided better pain relief and restored better function than the use of the conventional surgical technique at 2 years after total knee replacement. The Journal of Bone and Joint Surgery, 2018 Aug 1; 100 (15): 1265, …

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Use of Collagen, PTFE and PRF Membranes in Bone Reconstruction

Use of Collagen, PTFE and PRF Membranes in Bone Reconstruction an Experimental and Histomorphometric Study Neculae et al. In the present study it can be noted that bone regeneration differs depending on the type of barrier membranes used. There is an advantage of collagen membranes compared to non-resorbable d-PTFE membranes. The use of PRF membrane

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Xenogeneic bone grafting materials

Nowadays, a variety of bone substitutes are available for the clinical user. Interestingly, these materials significantly differ regarding their raw materials or manufacturing processes. As an alternative to autologous bone tissue (autograft), which is still applied as “gold standard” due to its extensive regenerative properties, bone substitutes from other natural sources become more and more …

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