J Korean Foot Ankle Soc.  2008 Jun;12(1):1-8.

The Value and Limitation of the Modified Mau Osteotomy(30 Cases Follow Up Report)

• Bae SY
• Kim BM
• Nam HT
• Choi HJ

Abstract

PURPOSE
To evaluate the value and limitation of modified Mau osteotomy through the review of 30 feet treated by this procedure.
MATERIALS AND METHODS
We retrospectively analyzed 30 cases treated with modified Mau osteotomy since 2002. The mean duration of follow-up was 10 months. We reviewed medical records to describe each case and select several clinical factors which related with surgical procedure and could influence on final results. We measured radiographic parameters such as hallux valgus angle (HVA), intermetatarsal angle (IMA), distal metatarsal articular angle (DMAA), sesamoid position and also assessed clinical outcomes by AOFAS score and satisfaction degrees.
RESULTS
The mean preoperative HVA and IMA were 40.4degrees, 17.4degrees and the mean amounts of correction were 31.2degrees and 11.5degrees. Amounts of delayed loss of correction were 16.8% in HVA and 19.2% in IMA. Initial HVA, rotational angle and translation distance of the distal fragment, stability of fixation, first ray instability were revealed as significant factors for the final result from this procedure. DMAA was increased by rotation of the distal fragment and decreased by adding translation on the rotation.
CONCLUSION
Modified Mau osteotomy is an effective procedure to get enough correction. But, it is important to try to avoid excessive rotation of the distal fragment because it may worse joint congruity. It may be worthwhile to pay close attention to the direction of saw and stability of fixation.

Keyword

Modified Mau osteotomy; Value; Limitation; Factors

MeSH Terms

Azasteroids
Dihydrotestosterone
Follow-Up Studies
Foot
Hallux Valgus
Joints
Medical Records
Metatarsal Bones
Osteotomy
Retrospective Studies
Azasteroids
Dihydrotestosterone