Skip Navigation LinksHome > October/November 2009 - Volume 29 - Issue 7 > A Minimally Invasive Treatment Protocol for the Congenital D...
Journal of Pediatric Orthopaedics:
doi: 10.1097/BPO.0b013e3181b7694d

A Minimally Invasive Treatment Protocol for the Congenital Dislocation of the Knee

Shah, Nirav R. MD*; Limpaphayom, Noppachart MD; Dobbs, Matthew B. MD* †

Collapse Box


Background: Congenital dislocation of the knee is a rare condition for which the treatment is difficult and remains controversial. For severe cases associated with neuromuscular disorders treatment has usually consisted of extensive surgical reconstruction. The purpose of this study is to assess the short-term results of a new method of treatment for this patient population that involves casting and less extensive surgery.

Methods: We retrospectively reviewed the cases of 8 consecutive patients, 4 girls and 4 boys, with 16 congenitally dislocated knees that had been diagnosed and treated by a single surgeon with a new minimally invasive treatment protocol. Treatment consisted of serial casting followed by a mini-open quadriceps tenotomy. The mean age at presentation was 5.3 weeks (range, 1 to13 wk). The mean follow-up was 33 months (range, 12 to 72 mo). All knees were graded in terms of function at final follow-up.

Results: Serial casting alone was effective in achieving correction in 3 knees. The remaining 13 knees had an average of 7 casts (range, 5 to 9 casts) before surgery. Ten knees were treated with a mini-open quadriceps tenotomy alone and 3 with an additional anterior capsulotomy at the time of the initial surgery. Two knees developed recurrent deformities and required additional surgery. Two knees sustained plastic deformation of the proximal tibia during physical therapy that resolved with time. At final follow-up, knee outcome was excellent in 11 (69%) knees, good in 3 (19%) knees, and fair in 2 (12%) knees.

Conclusions: The results of our study support the use of a less invasive approach for the initial treatment of congenital dislocation of the knee in this patient population. This approach avoids the complications of extensive scarring and stiffness that often accompany the more invasive surgical treatments. Longer follow-up, however, is necessary to see whether reduction and knee range of motion are maintained.

Level of Evidence: Level 4 case series.

© 2009 Lippincott Williams & Wilkins, Inc.

The Pediatric Orthopaedic Society of North America (POSNA)
is a group of healthcare professionals, primarily pediatric orthopaedic surgeons, dedicated to advancing musculoskeletal care of children and adolescents. JPO is our official member journal. 
Like us on facebook and become a member today!


Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.