Objectives
1) Determine if distal femoral traction pins result in knee
dysfunction in femoral or pelvic fracture patients, and 2) to determine if
skeletal traction relieves pain more effectively than splinting for femoral
shaft fractures.
Design
Prospective cohort trial.
Setting
Level I urban trauma center.
Patients/Participants
120 adult patients with femoral shaft, acetabular, and unstable
pelvic fractures.
Intervention
Patients with femoral shaft fractures were placed into distal femoral
skeletal traction or a long-leg splint, based on an attending-specific
protocol. Pelvic or acetabular fracture patients with instability or
intra-articular bone fragments were placed into skeletal traction.
Main Outcome Measurements
An initial Lysholm knee survey was administered to assess pre-injury
knee pain and function; the survey was repeated at 3- and 6-month follow-up
visits. Also, a 10-point visual analog scale (VAS) was used to document pain
immediately before, during, and immediately after fracture immobilization
with traction or splinting.
Results
Thirty-five patients (29%) were immobilized with a long-leg
splint, and 85 (71%) were immobilized with a distal femoral traction
pin. Eighty-four patients (70%) completed 6-month follow-up. Lysholm
scores decreased by a mean 9.3 points from pre-injury baseline to 6 months
post-injury in the entire cohort (p<0.01); no significant
differences were found between the splint and traction pin groups. During
application of the immobilization, VAS pain scores were significantly lower
in traction patients as compared to splinted patients (mean 1.9 points less,
p<0.01). Traction pins caused no infections, neurovascular injuries,
or iatrogenic fractures.
Conclusions
Distal femoral skeletal traction does not result in detectable knee
dysfunction at six months post-insertion, and results in less pain during
and after immobilization than long-leg splinting.