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  • Arthroscopic Cartilage Repair With OBI Plugs
    with diameters ranging from 4 to 11 mm Ideal for filling circular drill holes in bone 5 17 mm deep Allows for tissue regeneration Press fit into defect site to maintain space OBI TruFit tm PlugsMulti phase implant consisting of a Cartilage and a Bone phase each of which is designed to have mechanical properties which mimic those of the surrounding tissue The fiber reinforced cartilage phase is highly porous

    Original URL path: http://sog.sg/arthroscopic-cartilage-repair-with-obi-plugs (2014-05-06)
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  • Stem Cells for Cartilage Repair
    Chong Dr Chang s Publications Dr Lim Kay Kiat Dr Teo Yee Sze Dr Teo Yee Hong Our Clinics Mt Alvernia Mt Elizabeth Novena Enquiry Links Contact Us Stem Cells for Cartilage Repair Improving Cells in Microfracture with Stem Cells Surgery microfracture of cartilage defect Stem Cells Harvest via iliac crest Stem Cell Culture 3 weeks Injection of Stem Cells into joint at 3rd week with viscosupplementation Please note that

    Original URL path: http://sog.sg/stem-cells-for-cartilage-repair (2014-05-06)
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  • Anterior Cruciate Ligament (ACL) Injuries
    Mt Elizabeth Novena Enquiry Links Contact Us Anterior Cruciate Ligament ACL Injuries Anatomy of the knee Bone Ligament Muscle Joint Mechanism of Injury By change direction rapidly Slowing down from running Landing from a jump A bad tackle Symptoms Tenderness on resisted contraction Wrist extensors Tenderness on palpation Associated Injuries Meniscus Tears Cartilage Tears Tears to other ligaments If such a problem is NOT surgically reconstructed Knee becomes unstable Meniscus

    Original URL path: http://sog.sg/anterior-cruciate-ligament-acl-injuries (2014-05-06)
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  • Arthroscopic Anterior Cruciate Ligament (ACL) Reconstruction Using Allografts
    Us Arthroscopic Anterior Cruciate Ligament ACL Reconstruction Using Allografts Ideal Graft Reproduces Anterior Cruciate Ligament Biomaterial Properties minimal graft site morbidity stable fixation immediate intensive rehabilitation Bone Patellar Tendon Bone Graft Disadvantages Donor site morbidity Knee cap pain Crepitus and tendinitis Quadriceps weakness Rare Patella fractures Patellar tendon ruptures Infrapatellar contracture syndrome Hamstrings Grafts Advantages Less donor site morbidity Decreased knee cap pain Decreased tendinitis Less quadriceps weakness But Why Sacrifice Hamstrings When Hamstrings are important rotational and anterior stabilizers of the knee A role similar to the ACL V C Mow et al JOR 18 1 2000 Allografts Also known as donor cadaveric grafts As opposed to your own tissue which is known as autografts Allograft Reconstructions Advantages No donor site morbidity Very rapid rehabilitation Less pain Smaller scars Shorter operating time Ideal for multiple ligament reconstructions Choice of graft size and length What It Means to You Less pain Smaller Scars Quicker recovery Disadvantages Potential disease transmission 1 1 667 700 HIV risk with fresh frozen Higher costs donor grafts imported from AATB accredited tissue banks in USA For More Information Please refer to the book chapter on Allograft ACL Reconstruction written by Dr HC Chang Insall and

    Original URL path: http://sog.sg/arthroscopic-anterior-cruciate-ligament-acl-reconstruction-using-allografts (2014-05-06)
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  • Arthroscopic Double Bundle Anterior Cruciate Ligament (ACL) Reconstruction
    the posterolateral PL bundle which is posterolateral relative to AM bundle The ACL is comprised of two separate functional bundles of fascicles not a single cord Traditional ACL reconstruction treats the ligament as though it were a single construct replicating one of the functional bundles but not the other In traditional single bundle ACL reconstruction a graft is used to basically replicate the positioning of the AM bundle The double bundle technique uses two separate grafts to replicate the positioning of both the AM and the PL bundles Because the AM bundle makes a greater contribution to anteroposterior knee stability while the PL bundle makes a greater contribution to rotational stability a double bundle technique may be better able to restore normal knee kinematics FAQs What does double bundle ACL reconstruction offer me It provides a more anatomical reconstruction of your torn ACL compared to traditional single bundle technique This is borne out by many studies What does the 2nd bundle do The posterolateral bundle or PL bundle offers better rotational stability and this may translate to better functional outcome in the sportsmen Publications by Dr Chang on Double Bundle ACL Reconstructions Anatomic Double Bundle ACL reconstruction a literature review

    Original URL path: http://sog.sg/arthroscopic-double-bundle-anterior-cruciate-ligament-acl-reconstruction (2014-05-06)
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  • The Scientific Basis for Arthroscopic Double Bundle Anterior Cruciate Ligament (ACL) Reconstruction
    Pivot shift is not sufficiently controlled Patients feel some uncomfortable or unstable sensation during their athletic activities Single Bundle ACL Biomechanics Studied the effectiveness of single bundle ACL Reconstruction using Hamstring and Patellar tendon Address anterior tibial translation But poorly address combined rotational stability Savio Woo et al JBJS Am 84 2002 Tibiofemoral kinematics following successful ACL reconstruction using Dynamic MRI 10 successful ACL recon with hamstring autograft Lysholm score average 98 100 who returned to normal daily and sporting activities were scanned Contralateral normal knees as control Persistent anterior subluxation of lateral tibial plateau in all positions of flexion in ACL reconstructed group p 0 003 Logan AJSM 2004 Excessive Tibial Rotation During High Demand Activities Is Not Restored by ACL Reconstruction Studied the effectiveness of single bundle ACL Reconstruction using Hamstring and Patellar tendon Address anterior tibial translation But poorly address combined rotational stability Savio Woo et al JBJS Am 84 2002 Rotatory Stability 2 or 10 o clock femoral tunnel position of a single bundle ACL reconstruction improved rotatory stability when compared with the 1 or 11 o clock position However neither the 10 o clock nor the 11 o clock tunnel position could restore the kinematics and the in situ forces of the intact knee Loh et al Arthroscopy 2003 Biomechanical Criticism of Single Bundle ACLR Biomechanical studies with cadaver knees 1 B ACLR cannot completely restore the normal anterior laxity 1 B ACLR has no effect on the rotatory instability Woo et al JBJS 84A 907 2002 Yagi et al AJSM 30 660 2002 Kinematic analyses with patients 1 B ACLR cannot improve the rotatory instability during walking or running independent of the graft BTB Hamstring etc Georgoulis et al AJSM 31 75 2003 Ristanis et al Arthroscopy 21 1323 2005 Chouliaras et al AJSM

    Original URL path: http://sog.sg/the-scientific-basis-for-arthroscopic-double-bundle-anterior-cruciate-ligament-acl-reconstruction (2014-05-06)
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  • Dr Chang's involvement in development of Double Bundle ACL reconstruction
    Dr Teo Yee Sze Dr Teo Yee Hong Our Clinics Mt Alvernia Mt Elizabeth Novena Enquiry Links Contact Us Dr Chang s involvement in development of Double Bundle ACL reconstruction Dr HC Chang met Dr Christel in Porto Portugal for the ESSKA Meeting in May 2008 Dr Christel is the inventor of the Anatomic Double Bundle ACL Reconstruction Director s Guides from Smith Nephew Double Bundle ACL Reconstruction Workshop in

    Original URL path: http://sog.sg/dr-changs-involvement-in-development-of-double-bundle-acl-reconstruction (2014-05-06)
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  • Computer-aided Anterior Cruciate Ligament (ACL) Reconstruction
    Haw Chong Dr Chang s Publications Dr Lim Kay Kiat Dr Teo Yee Sze Dr Teo Yee Hong Our Clinics Mt Alvernia Mt Elizabeth Novena Enquiry Links Contact Us Computer aided Anterior Cruciate Ligament ACL Reconstruction Please note that the

    Original URL path: http://sog.sg/computer-aided-anterior-cruciate-ligament-acl-reconstruction (2014-05-06)
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