Editing Hamstring (section)

===Imaging===
[[File:Hamstring tear STIR cor annotatios.jpg|thumb|Tear of the hamstrings muscles at the ischial tuberosity seen on MRI (visible on a coronal [[Short tau inversion recovery|STIR]] MRI sequence). The arrowheads indicate the tuber{{which|reason=Upper or lower arrowhead?|date=November 2024}} and the retracted tendon stump.{{which|reason=Upper or lower arrowhead?|date=November 2024}} Significant bleeding around and into the muscles.]]
[[File:Pulled Hamstring.png|thumb|Picture of pulled hamstring showing location of hamstring]]

Imaging the hamstring muscles is usually performed with an [[ultrasound]] and/or [[MRI]].<ref name="pmid12942206">{{cite journal |vauthors=Koulouris G, Connell D |title=Evaluation of the hamstring muscle complex following acute injury|journal=Skeletal Radiol.|volume=32 |issue=10 |pages=582–9 |year=2003 |pmid=12942206 |doi=10.1007/s00256-003-0674-5|s2cid=23597752}}</ref> &nbsp;The biceps femoris is most commonly injured, followed by semitendinosus. Semimembranosus injury is rare. Imaging is useful in differentiating the grade of strain, especially if the muscle is completely torn.<ref name="pmid18360748">{{cite journal |vauthors=Schache AG, Koulouris G, Kofoed W, Morris HG, Pandy MG |title=Rupture of the conjoint tendon at the proximal musculotendinous junction of the biceps femoris long head: a case report.|journal=Knee Surg Sports Traumatol Arthrosc|volume=16 |issue=8 |pages=797–802 |year=2008 |pmid=18360748 |doi=10.1007/s00167-008-0517-y|s2cid=23953024}}</ref> In this setting, the level and degree of retraction can be determined, serving as a useful roadmap prior to any surgery. Those with a hamstring strain of greater than {{cvt|60|mm|in}} in length have a greater risk of recurrence.<ref name="pmid17426283">{{cite journal |vauthors=Koulouris G, Connell DA, Brukner P, Schneider-Kolsky M |title=Magnetic resonance imaging parameters for assessing risk of recurrent hamstring injuries in elite athletes.|journal=Am J Sports Med|volume=35 |issue=9 |pages=1500–6 |year=2007 |pmid=17426283 |doi=10.1177/0363546507301258|s2cid=174755}}</ref>