PMID- 2738770
OWN - NLM
STAT- MEDLINE
DCOM- 19890728
LR  - 20081121
IS  - 0736-0266 (Print)
IS  - 0736-0266 (Linking)
VI  - 7
IP  - 4
DP  - 1989
TI  - Intraarticular pressure during continuous passive motion of the human knee.
PG  - 530-7
AB  - Intraarticular pressure (IAP) was continuously monitored during continuous 
      passive motion (CPM) of five normal and 11 abnormal human knees using a new 
      fiberoptic, transducer-tipped Camino catheter. IAP varied in a consistent 
      hysteresis pattern in the normal knees, with subatmospheric pressures recorded at 
      intermediate angles of joint flexion. A similar pattern was recorded in the 
      abnormal knees without cruciate ligament pathology, whereas considerable 
      variability was noted in the knees with cruciate ligament abnormality. IAP was 
      lower in the extension to flexion than in the flexion to extension portion of the 
      CPM cycle, providing evidence of intraarticular fluid flow during portions of the 
      CPM cycle. IAP changes were consistent with "physiologic compartmentation" within 
      the knee at extremes of joint position. Capsular viscoelastic changes and/or 
      synovial fluid volume changes were observed during CPM. The therapeutic mechanism 
      of continuous passive motion may be related to cyclic variation of the 
      intraarticular pressure.
FAU - Pedowitz, R A
AU  - Pedowitz RA
AD  - Division of Orthopaedics and Rehabilitation, Veterans Administration Medical 
      Center, San Diego, California.
FAU - Gershuni, D H
AU  - Gershuni DH
FAU - Crenshaw, A G
AU  - Crenshaw AG
FAU - Petras, S L
AU  - Petras SL
FAU - Danzig, L A
AU  - Danzig LA
FAU - Hargens, A R
AU  - Hargens AR
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - J Orthop Res
JT  - Journal of orthopaedic research : official publication of the Orthopaedic 
      Research Society
JID - 8404726
SB  - IM
MH  - Adult
MH  - Female
MH  - Fiber Optic Technology
MH  - Humans
MH  - Knee Joint/abnormalities/*physiology
MH  - Male
MH  - Motion
MH  - Orthopedic Equipment
MH  - Pressure
OID - NASA: 89293475
EDAT- 1989/01/01 00:00
MHDA- 1989/01/01 00:01
CRDT- 1989/01/01 00:00
PHST- 1989/01/01 00:00 [pubmed]
PHST- 1989/01/01 00:01 [medline]
PHST- 1989/01/01 00:00 [entrez]
AID - 10.1002/jor.1100070410 [doi]
PST - ppublish
SO  - J Orthop Res. 1989;7(4):530-7. doi: 10.1002/jor.1100070410.