Arthrometer Insights

A combined ACL MCL injury is not simply an ACL tear plus a painful medial sprain. In many athletes and active patients, the medial side determines whether the knee behaves like an isolated sagittal-plane problem or a more complex instability pattern with medial knee instability, valgus overload, and persistent rotation. That is why careful assessment […]

With the 2026 global football tournament underway across the USA, Mexico, and Canada, clinicians are again seeing intense interest in ACL injury in soccer and how to assess it quickly, accurately, and responsibly. Although this article is not affiliated with that event, the tournament context is a useful reminder that football exposes the knee to

In the first hours and days after an ACL tear, examination findings can shift quickly. That is why acute ACL injury timing matters: swelling, pain, hemarthrosis, and reflex muscle contraction may all change what the clinician feels and what the patient tolerates. For orthopaedic surgeons, sports physicians, physiotherapists, and ER teams, understanding early ACL assessment

PCL injury diagnosis requires more than identifying pain after trauma. In many cases, the key clinical problem is posterior knee instability, which may be subtle in the acute setting and easier to underestimate than anterior laxity. A careful history, structured examination, and appropriately selected imaging help distinguish isolated injury from combined posterolateral or multiligament patterns.

In some ACL-injured knees, the MRI appearance and the clinical picture do not match. A patient may have a subtle or borderline scan, yet demonstrate a clear pivot shift test, recurrent giving-way, or high-demand functional failure. That gap matters because rotational knee instability is a dynamic problem, not only a structural imaging finding. For orthopaedic

ACL injury in tennis is often discussed less than in football or skiing, yet the sport creates a distinct mix of risk through abrupt deceleration, open-stance loading, recovery steps, and occasional sliding on hard or clay courts. A tennis ACL tear may not always follow a collision. Instead, symptoms can begin during a wide forehand,

Objective knee examination has become increasingly important in modern ligament assessment because it helps translate a subjective impression of instability into measurable findings. For orthopaedic surgeons, sports physicians, physiotherapists, and researchers, this matters most when manual knee ligament tests are limited by guarding, swelling, examiner experience, or borderline injury patterns. In practice, a structured approach

post-ACL reconstruction monitoring in high-risk athletes should be planned, not improvised. For clinicians managing cutting, pivoting, or contact sport populations, a structured pathway helps distinguish expected recovery from early graft overload, persistent instability, or reinjury risk. This is especially relevant in high-risk athletes after ACL reconstruction, where return timelines, exposure load, and residual laxity may

From image to function: why anatomy alone is not enough Modern knee stability assessment cannot rely on anatomy in isolation. MRI can define fiber continuity, edema, graft appearance, bone bruising, meniscal tears, and cartilage injury, but it does not always explain why a patient still reports giving way, poor confidence on cutting, or an abnormal