Evidence map›Paper›PMID 39849170›Full record

ArticleOperative Orthopadie und Traumatologie2025

[Modified Z-plasty of the patellar tendon for patella baja and flexion deficits].

Wolf Petersen, Hasan Al Mustafa, Johanna Schulze Borges, Martin Häner

Abstract readEnglish Abstract
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In one paragraph

Article in Operative Orthopadie und Traumatologie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. [Surgical treatment for chronic rupture of the quadriceps tendon].Operative Orthopadie und Traumatologie · 2026
    Article
4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Wolf PetersenKlinik für Orthopädie und Unfallchirurgie, Martin-Luther-Krankenhaus Berlin, Caspar-Theyss-Str. 27-33, 14193, Berlin, Deutschland. Wolf.Petersen@jsd.de.
Hasan Al MustafaKlinik für Orthopädie und Unfallchirurgie, Martin-Luther-Krankenhaus Berlin, Caspar-Theyss-Str. 27-33, 14193, Berlin, Deutschland.
Johanna Schulze BorgesKlinik für Orthopädie und Unfallchirurgie, Martin-Luther-Krankenhaus Berlin, Caspar-Theyss-Str. 27-33, 14193, Berlin, Deutschland.
Martin HänerKlinik für Orthopädie und Unfallchirurgie, Martin-Luther-Krankenhaus Berlin, Caspar-Theyss-Str. 27-33, 14193, Berlin, Deutschland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveLengthening of the patellar tendon to normalize patellar height and improve knee flexion deficits. INDICATIONS: Flexion deficits in combination with patella baja (Caton index < 0.6). CONTRAINDICATIONS: Infection. SURGICAL TECHNIQUE: Arthroscopy of the knee and resection of adhesions in suprapatellar pouch and additional intraarticular adhesions. Approximately 15 cm long incision from tibial tuberosity up to the patella. Exposition of the patellar tendon. Longitudinal incision in the middle from the tibial tuberosity towards the proximal patella. Division of the tendon into two strands. Detachment of the lateral tendon strand with periosteum from the bone of the patella and detachment of the medial strand with periosteum from the bone of the tibial tuberosity. Resection of fibrotic adhesions within Hoffa's fad pad and detachment of the longitudinal retinacula. Lengthening of the patella tendon of maximal 2.5 cm. Refixation of the medial strand to the upper part of the tibial tuberosity and the lateral strand to the distal patella pole with a soft anchor. Drilling of small transverse bone tunnels in the patella and tibial tuberosity for application of a McLaughlin cerclage for augmentation of the z‑plasty with a thick braided suture cord. POSTOPERATIVE MANAGEMENT: Six weeks partial weight bearing with 10 kg within a straight leg brace. Free passive range of motion.

resultsPreviously published results show that the Z‑plasty technique presented here on the patellar tendon can normalize the Caton index and improve mobility and clinical scores.

Indexed as

PatellaPatellar LigamentPlastic Surgery ProceduresTenotomyHumansRange of Motion, ArticularTreatment OutcomeArthrofibrosisExtensor apparatusKneeTendonTendon lengthening

Identifiers

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.