RT Book, Section
A1 Usatine, Richard P.
A1 Smith, Mindy A.
A1 Chumley, Heidi S.
A1 Mayeaux, E.J.
SR Print(0)
ID 57676687
T1 Chapter 106. The Knee
T2 The Color Atlas of Family Medicine, 2e
YR 2013
FD 2013
PB The McGraw-Hill Companies
PP New York, NY
SN 978-0-07-176964-8
LK accessmedicine.mhmedical.com/content.aspx?aid=57676687
RD 2024/04/25
AB A  33-year-old  woman  felt  a  pop  in  her  knee  while  skiing  around  a  tree.  She  felt  immediate  pain  and  had  difficulty  walking  when  paramedics  removed  her  from  the  slopes.  Within  a  couple  of  hours,  her  knee  was  swollen.  On  examination  the  next  day,  she  was  able  to  walk  4  steps  with  pain.  She  had  a  moderate  effusion  without  gross  deformity  and  full  range  of  motion.  She  had  no  tenderness  at  the  joint  line,  the  head  of  the  fibula,  over  the  patella,  or  over  the  medial  or  lateral  collateral  ligaments.  She  had  a  positive  Lachman  test,  a  negative  McMurray  test,  and  no  increased  laxity  with  valgus  or  varus  stress.  The  physician  suspected  an  anterior  cruciate  ligament  (ACL)  tear,  placed  her  in  a  long  leg  range  of  motion  brace,  and  advised  her  to  use  crutches  until  an  evaluation  by  her  physician  within  the  next  several  days.  She  was  treated  with  acetaminophen  for  pain  and  advised  to  rest,  apply  ice,  and  keep  her  leg  elevated.  Later,  an  MRI  confirmed  an  ACL  tear  (Figure  106-1).