A posterolateral stability of the knee is maintained by numerous ligaments, tendons, and muscles including the biceps femoris tendon (BFT) and the lateral collateral ligament (LCL). The BFT functions as an external rotator of the tibia, and provides forceful stability to the knee. There were several previous reports on the distal insertion patterns of the BFT and LCL, and they do not agree with...

We measured motion limits in human cadaveric knees before and after sectioning the anterior cruciate ligament and the medial structures. Sectioning the medial collateral ligament in an anterior cruciate ligament-deficient knee increased the anterior translation limit at 90 degrees of flexion but not at 30 degrees of flexion. The tibia displaced straight anteriorly without exhibiting the coupled...

*The superficial medial collateral ligament and other medial knee stabilizers-i.e., the deep medial collateral ligament and the posterior oblique ligament-are the most commonly injured ligamentous structures of the knee. *The main structures of the medial aspect of the knee are the proximal and distal divisions of the superficial medial collateral ligament, the meniscofemoral and meniscotibial ...

The supination-external rotation or Weber B type fracture exists as a stable and an unstable type. The unstable type has a medial malleolus fracture or deltoid ligament lesion in addition to a fibular fracture. The consensus is the unstable type and best treated by open reduction and internal fixation. The diagnostic process for a medial ligament lesion has been well investigated but there is n...

Injury to the proximal tibiofibular joint is uncommon. Previous studies regarding the anatomy of this region have predominantly focused on joint orientation. As radiographic technology has advanced, later studies have attempted to evaluate the capsular anatomy. However, no reports specifically map the ligaments to this joint. The objectives of the current study were to define specific ligamento...

Acute calcinosis of the ligaments and soft tissues surrounding the knee joint is a rare pathology typically presenting with acute pain. Here we describe a 40 year old lady who presented with acute lateral knee pain which was subsequently confirmed on MRI scan to be caused by calcification within the popliteofibular ligament-arcuate complex. After failure of simple analgesia, full resolution of ...

There have been differing descriptions of the anterolateral structures of the knee, and not all have been named or described clearly. The aim of this study was to provide a clear anatomical interpretation of these structures. We dissected 40 fresh-frozen cadaveric knees to view the relevant anatomy and identified a consistent structure in 33 knees (83%); we termed this the anterolateral ligamen...

Pre-operative clinical examination revealed no neurovascular deficit, but was limited due to significant pain and patient reluctance to participate in range of motion. Radiographs showed an intraarticular fracture of the posterior aspect of the right tibial spine with the dominant fragment displaced approximately 1 cm posteriorly in the joint space. Computed Tomography (CT) verified a 1 cm frag...

BACKGROUND The medial ulnar collateral ligament is the major soft tissue restraint to valgus displacement of the elbow. Currently, little has been published regarding the medial ulnar collateral ligament's ulnar footprint. HYPOTHESIS The medial ulnar collateral ligament has a long attachment onto the ulna and the anatomy of the footprint is consistent. STUDY DESIGN Descriptive laboratory st...

BACKGROUND Reconstruction of the anterior cruciate ligament (ACL) is one of the most common procedures in orthopaedic surgery. However, even with advances in surgical techniques and implants, some patients still have residual anterolateral rotatory laxity after reconstruction. A thorough study of the anatomy of the anterolateral region of the knee is needed. PURPOSE To study the anterolateral...