[Reconstruction of the medial patellofemoral ligament by tunnel transfer of the semitendinosus tendon].
OBJECTIVE
Stabilization of the patella by reconstruction of the medial patellofemoral ligament.


METHODS
Chronic recurrent lateral dislocation or subluxation of the patella. Habitual lateral dislocation of the patella.


METHODS
Primary dislocation of the patella. Genu valgum with a Q-angle > 15 degrees . Status following semitendinosus tendon transfer to reconstruct the anterior cruciate ligament. Joint infection. Neurogenic instability, ischiocrural muscle deficiency.


METHODS
Division of the distal insertion of the semitendinosus muscle at the pes anserinus. Subligamentous tunneling at the proximal insertion of the medial collateral ligament. The distal end of the semitendinosus tendon is transferred through the subligamentous tunnel to the medial patellar margin. Fixation of the tendon to the medioproximal patellar margin by passing it through an oblique transpatellar drill hole.


RESULTS
The patella was stabilized by dynamic reconstruction of the medial patellofemoral ligament in 14 patients with chronic recurrent or habitual lateral patellar dislocation. Ten patients were available for clinical follow-up assessment at an average of 13 months (8-27 months) postoperatively. The postoperative Kujala Index (maximum 100 points) increased on average from 56 to 95 points.
Ostermeier
Sven
S
Orthopädische Klinik, Medizinische Hochschule Hannover (MHH), Anna-von-Borries-Strasse 1-7, D-30625, Hannover, Germany. sven.ostermeier@annastift.de
Stukenborg-Colsman
Christina
C
Wirth
Carl-Joachim
CJ
Bohnsack
Michael
M
D002908:Chronic Disease; D005500:Follow-Up Studies; D006801:Humans; D031222:Patellar Dislocation / Q000601:surgery*; D017847:Patellar Ligament / Q000293:injuries* / Q000601:surgery; D011182:Postoperative Care; D011183:Postoperative Complications / Q000209:etiology; D012008:Recurrence; D012307:Risk Factors; D013709:Tendon Transfer / Q000379:methods*