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Table 1 Characteristics of the studied included

From: Complex ruptures of the quadriceps tendon: a systematic review of surgical procedures and outcomes

Nr. of reference

No. of patients

Gender

Mean age

Mechanism of rupture

Time before surgery

Type of lesion/rerupture

Associated injury/comorbidities

Type of surgery

Complications

[25] Bilateral quadriceps tendon rupture in a seasoned marathon runner with patellar spurs. (2011) Assiotis et al.

1

M

63

Tripped on a step and fell down, landing on both knees

42 days

Bilateral QT ruptures

None

Three separate Krakow-type sutures +three separate drilled tunnels in the patella and secured over the distal pole

None

[29] The hemisoleus rotational flap provides a novel superior autograft reconstructive option for the treatment of chronic extensor mechanism disruption. (2016) Auregan et al.

1

F

80

6 weeks after TKA during active extension of the knee against resistance

210 days

QT rerupture

None

Medial gastrocnemius-soleus-calcaneus rotational flap

None

[32] Allograft reconstruction of a chronic quadriceps tendon rupture with use of a novel technique. (2014) Forslund et al.

1

M

47

Primary tear: descending from a cinderblock; Re-tear: during physical therapy

1°: 210 days 2°: 365 days

Full thickness after QT rerupture

Hypertension

1°: quadriceps tendon V-Y advancement 2°: Achilles tendon-bone block allograft

None

[40] Simultaneous chronic rupture of quadriceps tendon and contra-lateral patellar tendon in a patient affected by tertiary hyperparatiroidism. (2008) Grecomoro et al.

1

M

48

Giving way of the left knee during walking and a secondary fall

40 days

Full thickness of the distal insertion of QT

Chronic renal failure, tertiary hyperparathyroidism

Codivilla’s Y/V technique

None

[41] Neglected rupture of the quadriceps tendon in a patient with chronic renal failure (case report and review of the literature). (2014) Hassani et al.

1

M

32

Common fall

60 days

Full thickness of the QT at the osteo-tendinous junction with retraction of 3 cm + calcifications

Chronic renal failure, with hemodialysis dependence for 5 years

Codivilla’s Y/V technique

None

[22] Bilateral extensor mechanism allograft reconstruction for chronic spontaneous rupture: a case report and review of the literature. (2019) Lamberti et al.

1

F

51

Acute failure of the left knee while getting up from a chair

480 days

Full-thickness lesion on the left QT

End-stage renal failure + full-thickness lesion on the right patellar tendon

A full extensor mechanism allograft

None

[36] Surgical treatment of neglected traumatic quadriceps tendon rupture with knee ankylosis. (2016) Lee et al.

1

M

15

Motorcycle accident

270 days

Chronic QT rupture + a patellar superior pole avulsion fracture of the left knee + nonunion of the left proximal tibia fracture

Open fracture of the left femur shaft + an intra-articular fracture of the proximal tibia

QT reconstruction using tibialis anterior allograft and additional screw fixation

None

[17] Reconstruction of a chronic quadriceps tendon tear in a body builder. (2006) Leopardi et al.

1

M

28

Car accident

210 days

Full-thickness tear of the quadriceps tendon proximal to the superior pole of the patella

Anabolic steroid use

QT reconstruction using gracilis and semitendinosus autograft

None

[42] Neglected ipsilateral simultaneous ruptures of patellar and quadriceps tendon (2015) Karahasanoglu et al.

1

M

40

Fall from a standing height

730 days

Chronic full-thickness and QT retraction

Ipsilateral patellar tendon rupture

Peroneus longus autograft

None

[43] Bilateral quadriceps tendon rupture and coexistent femoral neck fracture in a patient with chronic renal failure. (2007) Kazimoglu et al.

1

F

37

Two consecutive falls

60 days

Bilateral QT ruptures

Chronic renal failure, with hemodialysis for 2 years

Tycron transpatellar suture anchors

None

[28] Autologous hamstring tendon used for revision of quadiceps tendon tears. (2013) McCormick et al.

1

M

38

Primary tear: playing basketball

Re-tear: fall from standing height

1°: immediatly 2°: 300 days after the rerupture

Complete QT rerupture

None

Bilateral hamstring autograft through a QT weave and a transosseous patellar repair

None

[44] Chronic Quadriceps Tendon Rupture After Total Knee Arthroplasty Augmented With Synthetic Mesh. (2017) Ormaza et al.

3

2 M 1 F

67,5

One patient experienced trauma 1 year after TKA revision surgery; one patient 6 months after TKA revision surgery; one patient 2 years after TKA revision surgery

148 days

Full thickness

One of them had a hystory of hemochromatosis

End-to-end sutures No. 5 Ethibond and reinforcement with MUTARS synthetic mesh

None

[35] Knee osteoarthritis with chronic quadriceps tendon rupture treated with total knee arthroplasty and extensor mechanism allograft reconstruction: a case report. (2018) Piatek et al.

1

M

51

Traumatic fall

90 days

Chronic full-thickness and QT retraction

Tricompartmental knee osteoarthritis

TKA + complete knee extensor mechanism allograft

None

[45] Delayed reconstruction of a quadriceps tendon. (2008) Pocock et al.

1

F

80

Common fall

2920 days

Chronic full-thickness and QT retraction

Hypertension

Four FiberWire1 (Arthrex Ltd, Sheffield, England) sutures

None

[30] Chronic rupture of the extensor apparatus of the knee joint. (2005) Poonnoose et al.

1

M

50

Common fall

4380 days

Chronic full-thickness and QT retraction

Comminuted patellar fracture treated with patellectomy

Controlateral ileo-tibial band autograft

None

[19] Quadriceps tendon repair using hamstring, prolene mesh and autologous conditioned plasma augmentation. A novel technique \for repair of chronic quadriceps tendon rupture. (2015) Rehman et al.

1

M

61

Rerupture after primary repair

300 days

Chronic full thickness

Hypertension + glaucoma

QT reconstruction using semitendinosus and gracilis autograft + prolene mesh reinforcement + PRP injection

None

[46] Chronic quadriceps rupture: treatment with lengthening and early mobilization without cerclage augmentation and a report of three cases. (2008) Rizio et al.

3

1 M 2 F

46,75

One patient fell down a flight of stairs; One patient injured his knee while jumping in church during prayers; One patient fell while stepping off a curb

240 days

Chronic full thickness

Hypertension, Hypercolesterolaemia, Obesity + obesity + hip and chronic back pain

V-Y lengthening and direct repair through drill holes in the patella without augmentation

None

[18] Repair of ruptured quadriceps tendon with Leeds-Keio ligament following revision knee surgery. (2008) Rust et al.

1

F

86

Four months after TKA revision surgery

120 days

Chronic full-thickness + 10-cm QT retraction

None

Leeds-Keio graft inserted in an 8 shape and sutured to the periosteum

None

[23] Modified V-Y turndown flap augmentation for quadriceps tendon rupture following total knee arthroplasty: a retrospective study. (2019) Shi et al.

23

10 M 13 F

61

Fall from a standing height after TKA

21 days (range, 14 to 56 days)

Complete quadriceps tendon rupture following TKA + 1rerupture

Obesity, diabetes, chronic dialysis, steroid dependence (12pt)

V-Y turndown flap

1 hematoma and delayed wound healing 1 fall and rerupture after 24 months

[47] A simultaneous bilateral quadriceps and patellar tendons rupture in patients with chronic kidney disease undergoing long-term hemodialysis: a case report. (2020) Tao et al.

2

M

33,5

1 fall down the stairs 1 sudden twist

bilateral QT ruptures

Chronic renal failure, with hemodialysis dependence for 9 and 11 years

Krackow sutures

None

[37] Extensor Mechanism Reconstruction with Use of Marlex Mesh. (2019) Abdel et al.

27

10 M 17 F

67

Rupture after TKA

219 days

Complete QT rupture

Obesity, diabetes, coronary artery diease, hypertension, OA, rheumatoid arthritis, Parkinson, cancer (leukemia, breast cancer, bladder cancer)

Marlex Mesh augmentation

5 QT re-ruptures that required mesh revision

[38] Polypropylene mesh augmentation for complete quadriceps rupture after total knee arthroplasty. (2016) Nodzo et al.

7

2 M 5 F

58,7

Rupture after TKA

90 days

Complete QT rupture

Diabetes, rheumathoid arhtritis, chronic pulmunary disease with steroid use, HCV, drug abuse, smoke, chronic renal failure

Polypropylene mesh augmentation

2 QT reruptures and 2 QT rerupture with infections

[33] Reconstruction of disrupted extensor mechanism after total knee arthroplasty. (2017) Lim et al.

3

2 M 1 F

59

Rupture after TKA

205 days

Chronic full thickness

GERD, Pulmunary embolism, diabetes, hypothyroid, asthma, hypertension, stroke, smoke

Achilles tendon allograft

1 deep infection and graft failure

[34] Long-term results of extensor mechanism reconstruction using Achilles tendon allograft after total knee arthroplasty. (2018) Wise et al.

6

3 M 3 F

68

Rupture after TKa

Complete QT rupture [5] + 1 bilateral rupture

Hypertension [3], GERD, obesity [3], hypothyroidism, asthma, chronic kidney disease, OA, diabetes [3]

Achilles tendon allograft

 

[48] Quadriceps tendon rupture after total knee arthroplasty. Prevalence, complications, and outcomes. (2005) Dobbs et al.

7

1 M 6 F

72

3 patients fall, 1 patients while kneeling, 2 patients while walking, 1 patient while rising from a chair

40 days

QT rupture after TKA, 1 rerupture

Obesity [1], steroid abuse [1], DM [1]

Suture

4 reruptures and 1 chronic recurvatum